JDK 1.3.1_08 Under load on linux (RH7.3)

I have been running JDK 1.3.1 on linux under a development environment for quite a long time (2+ years) without issue, running a large Java application cinsisting of EJBs, and Web apps being run by BEA Weblogic. In an effort to cut costs we are migrating to linux for our production systems.
During the testing phase of running our applications on a dual-SMP Xeon based server with 2 GB of RAM we had no issues. However under load the java child processes (threads to the JVM) are getting very low priorities (15-19) and have a status of "SN" sleeping, and low-priority. If you run pstack on the PPID of the java processes they seem to be 'stuck' in nanosleep.
Does anyone out there have experiencing running large apps under high load on linux platforms?

had no issues. However under load the java child
processes (threads to the JVM) are getting very low
priorities (15-19) and have a status of "SN" sleeping,
and low-priority. Every Linux JVM that I know does not use native thread priorities (nice levels) at all, so if you are seeing child PIDs at the 15-19 range, someone most likely started the JVM at the exact same nice level. How many runtimes do you have running? What are your 5, 10, and 15 minute load averages? Are they under 2.0? Can you start your runtimes at a lower nice level?
Does anyone out there have experiencing running large
apps under high load on linux platforms?The `S' you see w/ ps is not particularly indicative that its stuck in this queue, just may be waiting for IO. Adjust your runtime nice level to 10 and under if your load is high and you have a higher IO priority runtime (as you have a dual-proc system).

Similar Messages

Desktop linux performance under load

Hello,
One thing that windows outperforms linux (at least with my settings) on desktop machines is the responsiveness under load. For the desktop computer the responsiveness is the most important thing. I played around with the swappiness and countrary to what is written in http://rudd-o.com/en/linux-and-free-sof … o-fix-that, setting swappiness to low value decreases performance. It was expected that if I set the swappiness to 1, the system will swap only when it is absolutely necessary. What happened was that in the moment the physical memory was exhausted, the machine fell into almost 100% IO wait. It didn't swap anything but the harddisk led was flashing vigorously. Setting swappiness to 100 resulted in correct fast swapping and usable machine when the physical memory ran out.
However the one thing that clearly seems to make the desktop environment super unresponsive is copying files. When I upload things on my flash drive, even the mouse becomes unresponsive and jumps instead of moving smoothly. In my opinion the mouse should move smoothly no matter what.
So has anybody here tried to improve the responsiveness?
I'm with kde 4.6 but I think the other window managers also suffered from jumpy mouse.

Yeah, I have (had) similar problems. Check out this thread: https://bbs.archlinux.org/viewtopic.php?id=114742
Anyway since them I just said f*ck it and set my swappiness to 100, because setting it to low values would render my system unusable at even medium loads (for example few heavy programs open + some i/o actions in the background). Now my system is kinda responsive, or at least it will never stall to the point of unusability.
I'm also using kernel26-ck, you might check that out: https://aur.archlinux.org/packages.php?ID=32877

Cache and/or Connection problems under load

I have a Kodo web app that's been running just fine in
production for many months now. However, recently the web
traffic has shot up by a huge amount, literally overnight.
But unfortunately, it's caused the app to fail very ungracefully
under the strain.
It's been a crazy few days, and I haven't been able to do
very much analysis because of higher priorities. But from
what I have been able to gleen, it now looks like Kodo is
the most likely culprit. From what I've read in other messages
here, it appears others may have been experiencing similar
problems.
My environment: Redhat Linux 8, Postgres 7.3.4 with the
included JDBC3 driver, Apache 1.3.x, Tomcat 4.1.x and the
webapp connector. Similar behavior was seen with Apache 2.x,
Tomcat 4.1.x and the JK2 connector (that was on the new machine
I setup to handle the new traffic, which, of course, died the
night before).
As I mentioned, this app has been running reliably for
months with no problems. But when placed under heavy load,
it appears to get into some sort of pathological state where
it slows down dramatically (asymptotically?) to the point where
it's effectively locked up. In one case, where the app was
left running for several hours in this state, requests were
taking 90 minutes to complete (normal is 1-5 seconds).
From what I can deduce, there seem to be four things
going on, three of which have been mentioned in recent threads
here:
1) Excessive memory consumption. When the app is
operating normally, I see fairly flat memory usage for
the JVM process. Under load, the JVM steadily expands
until it hits its heap limit. I've gotten OutOfMemory
exceptions with a heap size of 350MB, which should be plenty.
2) Level 2 cache locking issues. I've seen dozens of
threads waiting on a lock in the DataCache code. Not sure
if there's a deadlock happening here or just that the
threads are waiting on a lock that's being held for a long time.
3) Database Connection leaks or contention. I see threads
spinning in the DataSource code trying to get a connection.
I also see dozens of connections from the Postgres side which
seem to be sitting idle, but in the middle of a transaction.
When things get bad, I also see exceptions being thrown because
of timeouts waiting for a connection to become available. It's
a web app, PMs should not be tied up for more than a few seconds.
4) CPU usage pegged or nearly so for the JVM. I suspect
this is related to #3. Something very bad is going on here.
If I stop all inbound requests to the JVM when it's in this
bad state, it will continue to burn CPU at 90%+ for a very
long time. I think it will eventually finish what it's doing,
but I haven't had the luxury of waiting for it. It's definitely
not a linear slowdown proportional to the load.
Attached are my kodo.properties file and some thread stack
traces along with some comments. Any advice would be greatly
appreciated. This is not a complicated app nor am I doing
anything unusual. It doesn't seem logical that Kodo could
breakdown so dramatically under load, so I'm hoping it's some
sort of interaction thing that I can work around.
Thanks.
Ron Hitchens {mailto:[email protected]} RonSoft Technologies
(510) 494-9597 (Home Office) http://www.ronsoft.com
(707) 924-3878 (fax) Bit Twiddling At Its Finest
"Born with a broken heart" -Kenny Wayne Shepard

Please read prior posts regarding level 2 cache. It is unusable under stress
as far I am concerned. Basically entire cache gets locked on any database
read. Makes it very unscalable
Are you using 2.5.3? It will request a connection from a pool every time it
resolves reference to a PC even if it is cached in PM and therefore Kodo
does not need to read any. As result if you iterate over 100 objects in your
query and for each object resolve reference to another object (always the
same) kodo will request 100 database connections from the pool (and note
they issue rollback on every time they return a connection to the pool so
getting connection might be fairly expensive)
In conjunction with level 2 cache contention this causes application to go
into a stupor.
Try to go back to 2.5.2 (or may be 2.5.4 they promised in the near future
with a workaround) or use "persistent-manager" connection retention if you
discard PM after each HTTP invocation - it will take care of connection
pooling issue. As far as L2 cache I was unable to find any work around so
far - see if you might be better of without cache. You might if your object
graph is not very complex
"Ron Hitchens" <[email protected]> wrote in message
news:[email protected]...
>
I have a Kodo web app that's been running just fine in
production for many months now. However, recently the web
traffic has shot up by a huge amount, literally overnight.
But unfortunately, it's caused the app to fail very ungracefully
under the strain.
It's been a crazy few days, and I haven't been able to do
very much analysis because of higher priorities. But from
what I have been able to gleen, it now looks like Kodo is
the most likely culprit. From what I've read in other messages
here, it appears others may have been experiencing similar
problems.
My environment: Redhat Linux 8, Postgres 7.3.4 with the
included JDBC3 driver, Apache 1.3.x, Tomcat 4.1.x and the
webapp connector. Similar behavior was seen with Apache 2.x,
Tomcat 4.1.x and the JK2 connector (that was on the new machine
I setup to handle the new traffic, which, of course, died the
night before).
As I mentioned, this app has been running reliably for
months with no problems. But when placed under heavy load,
it appears to get into some sort of pathological state where
it slows down dramatically (asymptotically?) to the point where
it's effectively locked up. In one case, where the app was
left running for several hours in this state, requests were
taking 90 minutes to complete (normal is 1-5 seconds).
From what I can deduce, there seem to be four things
going on, three of which have been mentioned in recent threads
here:
1) Excessive memory consumption. When the app is
operating normally, I see fairly flat memory usage for
the JVM process. Under load, the JVM steadily expands
until it hits its heap limit. I've gotten OutOfMemory
exceptions with a heap size of 350MB, which should be plenty.
2) Level 2 cache locking issues. I've seen dozens of
threads waiting on a lock in the DataCache code. Not sure
if there's a deadlock happening here or just that the
threads are waiting on a lock that's being held for a long time.
3) Database Connection leaks or contention. I see threads
spinning in the DataSource code trying to get a connection.
I also see dozens of connections from the Postgres side which
seem to be sitting idle, but in the middle of a transaction.
When things get bad, I also see exceptions being thrown because
of timeouts waiting for a connection to become available. It's
a web app, PMs should not be tied up for more than a few seconds.
4) CPU usage pegged or nearly so for the JVM. I suspect
this is related to #3. Something very bad is going on here.
If I stop all inbound requests to the JVM when it's in this
bad state, it will continue to burn CPU at 90%+ for a very
long time. I think it will eventually finish what it's doing,
but I haven't had the luxury of waiting for it. It's definitely
not a linear slowdown proportional to the load.
Attached are my kodo.properties file and some thread stack
traces along with some comments. Any advice would be greatly
appreciated. This is not a complicated app nor am I doing
anything unusual. It doesn't seem logical that Kodo could
breakdown so dramatically under load, so I'm hoping it's some
sort of interaction thing that I can work around.
Thanks.
Ron Hitchens {mailto:[email protected]} RonSoft Technologies
(510) 494-9597 (Home Office) http://www.ronsoft.com
(707) 924-3878 (fax) Bit Twiddling At Its Finest
"Born with a broken heart" -Kenny Wayne Shepard
With cahce enabled, 2.5.3
Here the app had recently slowed down and then effectively locked up.
There where many outstanding web requests that were not receiving output.
At this point most threads seemed to be waiting at the same location.
There were a large number of active database connections and most of
them had open transactions (according to pg_stat_activity). The app
was not responding to any web requests.
It would seem that db transactions had been started, then the thread
got stuck for a long time on a synchronization lock in the cache lookup.
Below are two randomly chosen thread stack dumps.
Thread-72[1] where
[1] java.lang.Object.wait (native method)
[2] java.lang.Object.wait (Object.java:429)
[3]oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$ReaderLock.acquir
e (WriterPreferenceReadWriteLock.java:169)
[4]com.solarmetric.kodo.runtime.datacache.AbstractCacheImpl.acquireReadLock
(AbstractCacheImpl.java:384)
[5]com.solarmetric.kodo.runtime.datacache.TimedDataCache.acquireReadLock
(TimedDataCache.java:256)
[6] com.solarmetric.kodo.runtime.datacache.DataCacheStoreManager.load(DataCacheStoreManager.java:595)
[7] com.solarmetric.kodo.runtime.StateManagerImpl.loadFields(StateManagerImpl.java:2,330)
[8] com.solarmetric.kodo.runtime.StateManagerImpl.isLoaded(StateManagerImpl.java:897)
[9] com.europeasap.data.City.jdoGetname (null)
[10] com.europeasap.data.City.getName (City.java:39)
[11] com.europeasap.form.CustomerBookingForm.populateDepartureCityInfo(CustomerBookingForm.java:922)
[12] com.europeasap.form.CustomerBookingForm.onetimeInit(CustomerBookingForm.java:871)
[13] com.europeasap.form.CustomerBookingForm.populatePackageInfo(CustomerBookingForm.java:880)
[14] com.europeasap.action.CustomizeTrip.perform (CustomizeTrip.java:66)
[15] org.apache.struts.action.ActionServlet.processActionPerform(ActionServlet.java:1,787)
[16] org.apache.struts.action.ActionServlet.process(ActionServlet.java:1,586) [17]
org.apache.struts.action.ActionServlet.doGet (ActionServlet.java:492)
[18] javax.servlet.http.HttpServlet.service (HttpServlet.java:740)
[19] javax.servlet.http.HttpServlet.service (HttpServlet.java:853)
[20] org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
[21] org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
[22] org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260)
[23]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:643)
[24] org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[25] org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[26] org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
[27]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:643)
[28] org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
[29]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:641)
[30] org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[31] org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[32] org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2,415)
[33] org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
[34]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:643)
[35] org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
[36]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:641)
[37] org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
[38]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:641)
[39] org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[40] org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[41] org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
[42]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:643)
[43] org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[44] org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[45] org.apache.catalina.connector.warp.WarpRequestHandler.handle (null)
[46] org.apache.catalina.connector.warp.WarpConnection.run (null)
[47] java.lang.Thread.run (Thread.java:534)
Thread-64[1] where
[1] java.lang.Object.wait (native method)
[2] java.lang.Object.wait (Object.java:429)
[3]oswego.cs.dl.util.concurrent.WriterPreferenceReadWriteLock$ReaderLock.acquir
e (WriterPreferenceReadWriteLock.java:169)
[4]com.solarmetric.kodo.runtime.datacache.AbstractCacheImpl.acquireReadLock
(AbstractCacheImpl.java:384)
[5]com.solarmetric.kodo.runtime.datacache.TimedDataCache.acquireReadLock
(TimedDataCache.java:256)
[6] com.solarmetric.kodo.runtime.datacache.DataCacheStoreManager.load(DataCacheStoreManager.java:595)
[7] com.solarmetric.kodo.runtime.StateManagerImpl.loadField(StateManagerImpl.java:2,248)
[8] com.solarmetric.kodo.runtime.StateManagerImpl.isLoaded(StateManagerImpl.java:899)
[9] com.europeasap.data.HotelPrices.jdoGetseasonalPrices (null)
[10] com.europeasap.data.HotelPrices.normalizeIndex(HotelPrices.java:113)
[11] com.europeasap.data.HotelPrices.getCost (HotelPrices.java:45)
[12] com.europeasap.logic.CostHelper.findLowestHotel(CostHelper.java:181)
[13] com.europeasap.logic.CostHelper.computeBasePackageCost(CostHelper.java:297)
[14] com.europeasap.logic.CostHelper.computeFinalPackageCost(CostHelper.java:246)
[15] com.europeasap.form.CustomerBookingForm.updateDisplayCosts(CustomerBookingForm.java:1,440)
[16] com.europeasap.form.CustomerBookingForm.updateCustomizeDisplayInfo(CustomerBookingForm.java:1,407)
[17] com.europeasap.action.CustomizeTrip.perform (CustomizeTrip.java:68)
[18] org.apache.struts.action.ActionServlet.processActionPerform(ActionServlet.java:1,787)
[19] org.apache.struts.action.ActionServlet.process(ActionServlet.java:1,586) [20]
org.apache.struts.action.ActionServlet.doGet (ActionServlet.java:492)
[21] javax.servlet.http.HttpServlet.service (HttpServlet.java:740)
[22] javax.servlet.http.HttpServlet.service (HttpServlet.java:853)
[23] org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
[24] org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
[25] org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260)
[26]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:643)
[27] org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[28] org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[29] org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
[30]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:643)
[31] org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
[32]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:641)
[33] org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[34] org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[35] org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2,415)
[36] org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
[37]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:643)
[38] org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
[39]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:641)
[40] org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
[41]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:641)
[42] org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[43] org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[44] org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
[45]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:643)
[46] org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[47] org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[48] org.apache.catalina.connector.warp.WarpRequestHandler.handle (null)
[49] org.apache.catalina.connector.warp.WarpConnection.run (null)
[50] java.lang.Thread.run (Thread.java:534)
while running slow, 2.5.3
At this point, the app had been running several hours normally, then
apparently slowed down and locked up while I was away. When looking
at the app threads and database activity, everything appeared idle.
No transactions seemed to be open in the db. But the app was not
behaving normally. Web requests that did not make use of JDO worked
fine (but slow). But requests that hit the db either blocked or were
very slow to respond.
Looking back at the log, there had been a large number of requests
that threw exceptions because they could not get a connection within
five seconds.
Most threads were idle, waiting on read, but some were in the state
shown by the following two stack dumps. Unlike the cache threads above,
they did not seem to be waiting for a lock to be granted, they seemed
to be spinning in the connection management code. Apparently trying
to get a connection. I suspended and resumed the same thread repeatedly
and it always seemd to be doing the same thing. Single stepping was
very difficult because the debugger was slow to respond, apparently
because of other threads also busy spinning.
Postgres indicated that there where lots of connections open and
that they were all idle, so there should not have been a shortage
of connections in the pool. There are two mysteries here: 1) why
can't this thread get a connection? and 2) Why is it busy spinning?
Thread-56[1] where
[1]com.solarmetric.datasource.PreparedStatementCache$CacheAwareConnection.prepa
reStatement (PreparedStatementCache.java:184)
[2]com.solarmetric.datasource.PreparedStatementCache$CacheAwareConnection.prepa
reStatement (PreparedStatementCache.java:169)
[3] com.solarmetric.datasource.ConnectionWrapper.prepareStatement(ConnectionWrapper.java:199)
[4]com.solarmetric.kodo.impl.jdbc.schema.dict.AbstractDictionary.isClosed
(AbstractDictionary.java:1,912)
[5]com.solarmetric.kodo.impl.jdbc.SQLExecutionManagerImpl.getConnectionFromFact
ory (SQLExecutionManagerImpl.java:186)
[6] com.solarmetric.kodo.impl.jdbc.SQLExecutionManagerImpl.getConnection(SQLExecutionManagerImpl.java:147)
[7]com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.newSQLExecutionManag
er (JDBCStoreManager.java:828)
[8]com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.getSQLExecutionManag
er (JDBCStoreManager.java:714)
[9]com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.getDatastoreConnecti
on (JDBCStoreManager.java:287)
[10]com.solarmetric.kodo.runtime.datacache.DataCacheStoreManager.getDatastoreCon
nection (DataCacheStoreManager.java:465)
[11] com.solarmetric.kodo.runtime.datacache.DataCacheStoreManager.load(DataCacheStoreManager.java:591)
[12] com.solarmetric.kodo.runtime.StateManagerImpl.loadFields(StateManagerImpl.java:2,330)
[13] com.solarmetric.kodo.runtime.StateManagerImpl.isLoaded(StateManagerImpl.java:897)
[14] com.europeasap.data.City.jdoGetname (null)
[15] com.europeasap.data.City.getName (City.java:39)
[16] com.europeasap.form.CustomerBookingForm.populateDepartureCityInfo(CustomerBookingForm.java:922)
[17] com.europeasap.form.CustomerBookingForm.onetimeInit(CustomerBookingForm.java:871)
[18] com.europeasap.form.CustomerBookingForm.populatePackageInfo(CustomerBookingForm.java:880)
[19] com.europeasap.action.CustomizeTrip.perform (CustomizeTrip.java:66)
[20] org.apache.struts.action.ActionServlet.processActionPerform(ActionServlet.java:1,787)
[21] org.apache.struts.action.ActionServlet.process(ActionServlet.java:1,586) [22]
org.apache.struts.action.ActionServlet.doGet (ActionServlet.java:492)
[23] javax.servlet.http.HttpServlet.service (HttpServlet.java:740)
[24] javax.servlet.http.HttpServlet.service (HttpServlet.java:853)
[25] org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
[26] org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
[27] org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260)
[28]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:643)
[29] org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[30] org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[31] org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
[32]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:643)
[33] org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
[34]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:641)
[35] org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[36] org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[37] org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2,415)
[38] org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
[39]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:643)
[40] org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
[41]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:641)
[42] org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
[43]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:641)
[44] org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[45] org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[46] org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
[47]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:643)
[48] org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[49] org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[50] org.apache.catalina.connector.warp.WarpRequestHandler.handle (null)
[51] org.apache.catalina.connector.warp.WarpConnection.run (null)
[52] java.lang.Thread.run (Thread.java:534)
Thread-56[1] where
[1]com.solarmetric.datasource.DataSourceImpl$AbstractPool.findConnection
(DataSourceImpl.java:826)
[2] com.solarmetric.datasource.DataSourceImpl$AbstractPool.getConnection(DataSourceImpl.java:605)
[3] com.solarmetric.datasource.DataSourceImpl.getConnection(DataSourceImpl.java:363)
[4] com.solarmetric.datasource.DataSourceImpl.getConnection(DataSourceImpl.java:356)
[5]com.solarmetric.kodo.impl.jdbc.runtime.DataSourceConnector.getConnection
(DataSourceConnector.java:63)
[6]com.solarmetric.kodo.impl.jdbc.SQLExecutionManagerImpl.getConnectionFromFact
ory (SQLExecutionManagerImpl.java:185)
[7] com.solarmetric.kodo.impl.jdbc.SQLExecutionManagerImpl.getConnection(SQLExecutionManagerImpl.java:147)
[8]com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.newSQLExecutionManag
er (JDBCStoreManager.java:828)
[9]com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.getSQLExecutionManag
er (JDBCStoreManager.java:714)
[10]com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.getDatastoreConnecti
on (JDBCStoreManager.java:287)
[11]com.solarmetric.kodo.runtime.datacache.DataCacheStoreManager.getDatastoreCon
nection (DataCacheStoreManager.java:465)
[12]com.solarmetric.kodo.runtime.datacache.DataCacheStoreManager.initialize
(DataCacheStoreManager.java:519)
[13] com.solarmetric.kodo.runtime.StateManagerImpl.loadInitialState(StateManagerImpl.java:215)
[14]com.solarmetric.kodo.runtime.PersistenceManagerImpl.getObjectByIdFilter
(PersistenceManagerImpl.java:1,278)
[15] com.solarmetric.kodo.runtime.PersistenceManagerImpl.getObjectById(PersistenceManagerImpl.java:1,179)
[16]com.solarmetric.kodo.runtime.datacache.query.CacheAwareQuery$CachedResultLis
t.get (CacheAwareQuery.java:432)
[17] java.util.AbstractList$Itr.next (AbstractList.java:421)
[18] com.europeasap.form.CustomerBookingForm.populateDepartureCityInfo(CustomerBookingForm.java:919)
[19] com.europeasap.form.CustomerBookingForm.onetimeInit(CustomerBookingForm.java:871)
[20] com.europeasap.form.CustomerBookingForm.populatePackageInfo(CustomerBookingForm.java:880)
[21] com.europeasap.action.CustomizeTrip.perform (CustomizeTrip.java:66)
[22] org.apache.struts.action.ActionServlet.processActionPerform(ActionServlet.java:1,787)
[23] org.apache.struts.action.ActionServlet.process(ActionServlet.java:1,586) [24]
org.apache.struts.action.ActionServlet.doGet (ActionServlet.java:492)
[25] javax.servlet.http.HttpServlet.service (HttpServlet.java:740)
[26] javax.servlet.http.HttpServlet.service (HttpServlet.java:853)
[27] org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
[28] org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
[29] org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260)
[30]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:643)
[31] org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[32] org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[33] org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
[34]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:643)
[35] org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
[36]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:641)
[37] org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[38] org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[39] org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2,415)
[40] org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
[41]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:643)
[42] org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
[43]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:641)
[44] org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
[45]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:641)
[46] org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[47] org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[48] org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
[49]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:643)
[50] org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[51] org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[52] org.apache.catalina.connector.warp.WarpRequestHandler.handle (null)
[53] org.apache.catalina.connector.warp.WarpConnection.run (null)
[54] java.lang.Thread.run (Thread.java:534)
With cache disabled 2.4.3
This run was an accident. I inadvertently ran the app with the older
2.4.3 version of Kodo, with the cache disabled. This one got into trouble
almost immediately. It also seemed to lockup with lots of opentransactions
in the db. It's also interesting that these two threads also seem to be
hanging around the same method as in 2.5.3.
Thread-63[1] where 0x9f9
[1]com.solarmetric.datasource.PreparedStatementCache$CacheAwareConnection.prepa
reStatement (PreparedStatementCache.java:184)
[2] com.solarmetric.datasource.ConnectionWrapper.prepareStatement(ConnectionWrapper.java:377)
[3]com.solarmetric.kodo.impl.jdbc.SQLExecutionManagerImpl.prepareStatementInter
nal (SQLExecutionManagerImpl.java:807)
[4]com.solarmetric.kodo.impl.jdbc.SQLExecutionManagerImpl.executePreparedQueryI
nternal (SQLExecutionManagerImpl.java:761)
[5]com.solarmetric.kodo.impl.jdbc.SQLExecutionManagerImpl.executeQueryInternal
(SQLExecutionManagerImpl.java:691)
[6] com.solarmetric.kodo.impl.jdbc.SQLExecutionManagerImpl.executeQuery(SQLExecutionManagerImpl.java:372)
[7] com.solarmetric.kodo.impl.jdbc.SQLExecutionManagerImpl.executeQuery(SQLExecutionManagerImpl.java:356)
[8] com.solarmetric.kodo.impl.jdbc.ormapping.ClassMapping.loadByPK(ClassMapping.java:950)
[9] com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.initialize(JDBCStoreManager.java:263)
[10] com.solarmetric.kodo.runtime.StateManagerImpl.loadInitialState(StateManagerImpl.java:174)
[11]com.solarmetric.kodo.runtime.PersistenceManagerImpl.getObjectByIdFilter
(PersistenceManagerImpl.java:1,023)
[12] com.solarmetric.kodo.runtime.PersistenceManagerImpl.getObjectById(PersistenceManagerImpl.java:942)
[13] com.solarmetric.kodo.impl.jdbc.ormapping.OneToOneMapping.load(OneToOneMapping.java:147)
[14] com.solarmetric.kodo.impl.jdbc.runtime.JDBCStoreManager.load(JDBCStoreManager.java:375)
[15] com.solarmetric.kodo.runtime.StateManagerImpl.loadField(StateManagerImpl.java:2,035)
[16] com.solarmetric.kodo.runtime.StateManagerImpl.isLoaded(StateManagerImpl.java:720)
[17] com.europeasap.data.CityMarkup.jdoGetcity (null)
[18] com.europeasap.data.CityMarkup.getCity (CityMarkup.java:30)
[19] com.europeasap.logic.CostHelper.getCityMarkup (CostHelper.java:81)
[20] com.europeasap.logic.CostHelper.computeBasePackageCost(CostHelper.java:289)
[21] com.europeasap.logic.CostHelper.computeFinalPackageCost(CostHelper.java:246)
[22] com.europeasap.form.CustomerBookingForm.updateDisplayCosts(CustomerBookingForm.java:1,440)
[23] com.europeasap.form.CustomerBookingForm.updateCustomizeDisplayInfo(CustomerBookingForm.java:1,407)
[24] com.europeasap.action.CustomizeTrip.perform (CustomizeTrip.java:68)
[25] org.apache.struts.action.ActionServlet.processActionPerform(ActionServlet.java:1,787)
[26] org.apache.struts.action.ActionServlet.process(ActionServlet.java:1,586) [27]
org.apache.struts.action.ActionServlet.doPost (ActionServlet.java:510)
[28] javax.servlet.http.HttpServlet.service (HttpServlet.java:760)
[29] javax.servlet.http.HttpServlet.service (HttpServlet.java:853)
[30] org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
[31] org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
[32] org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260)
[33]org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext (StandardPipeline.java:643)
[34] org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
[35] org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
[36] org.apache.catal

WL server failed to response under load

Hi
We have a quite strange situation on my sight. Under load our WL 10.3.2 server failed to response. We are using RestEasy with HttpClient version 3.1 to coordinate with web service deployed as WAR.
What we have is a calculation process that run on 4 containers based on 4 physical machines and each of them send request to WL during calculation.
Each run we see a messages from HttpClient like this:
[THREAD1] INFO   I/O exception (org.apache.commons.httpclient.NoHttpResponseException) caught when processing request: The server OUR_SERVER_NAME failed to respond
[THREAD1] INFO   Retrying request
The HttpClient make several requests until get necessary data.
I want to understand why WL can refuse connections. I read about WL thread pool that process http request and understand that WL allocate separate thread to process web request and the numbers of threads is not bounded in default configuration. Also our server is configured Maximum Open Sockets: -1 which means that the number of open sockets is unlimited.
From this thread I'd want to understand where the issue is? Is it on WL side or it's a problem of our business logic? Can you guys help to deeper investigate the situation.
What should I check more in order to understand that our WL server is configured to work with as much requests as we want?

Thanks for a good explanation!
Linux server it's not in my competencies but what we have now is:
root    soft    nofile 3072
root    hard    nofile 65536
So the upper number is really big. As I understood it's a config for whole processes in operation system.
But I go further and find these numbers for our WL managed server.
cat /proc/23085/limits
Limit                     Soft Limit           Hard Limit           Units
Max cpu time              unlimited            unlimited            seconds
Max file size             unlimited            unlimited            bytes
Max data size             unlimited            unlimited            bytes
Max stack size            10485760             unlimited            bytes
Max core file size        0                    unlimited            bytes
Max resident set          unlimited            unlimited            bytes
Max processes             578455               578455               processes
Max open files            8192                 8192                 files
Max locked memory         32768                32768                bytes
Max address space         unlimited            unlimited            bytes
Max file locks            unlimited            unlimited            locks
Max pending signals       578455               578455               signals
Max msgqueue size         819200               819200               bytes
Max nice priority         0                    0
Max realtime priority     0                    0
Again it's only a config numbers. If continue moving in this direction I'd want to see the real numbers when the server is under load. So finding these numbers I would make an assumption that the issue is here. Don't you know is there a log file or history file where I can find a max open file descriptors for WL server?

Freezing under load after Zalman 7000A installation - help!

I built a K8N system over the summer using the stock AMD HSF. Yesterday I decided to install a Zalman 7000A to quiten the system and to run a bit cooler.
The installation was relatively straightforward. As usual removing the back plate was a pain. The main concern was that the thermal pad used on the stock HSF was so strong that, despite twising to break the seal, still lifted the CPU out of its socket. All the pins looked fine and it went back in OK.
After re-installing the motherboard and connecting all the cables, system booted fine with no apparent problems. Temps looked a little better and perhaps a little quiter. Runs normal office apps ok.
Testing SETI@home to load the system, the temps rose up to mid 50s and the fan increased speed, and then the system froze (screen was frozen, no keyboard input). Booting into Fedora linux showed the same problem, idles OK, but running a numerical fluid simulation locks the system. The highest temp I have seen with Core Center is 61C (this is with BIOS 1.44)
A bit more testing showed a slightly strange behaviour from Core Center. The processor speed was fluctuating, with the FSB increasing so that at some brief instances it was reporting 2750Mhz.
I have previously seen this but small momentary increases from 2010 to 2100 or so.
So how to narrow down the problem:
have I damaged the CPU or motherboard during the backplate/HSF removal?
have I forget to connect something somewhere?
is there a problem with the Zalman installation so that the CPU is overheating (too little thermal grease)?
should I go back to the stock HSF
thanks

update on progress...
re-installed the Zalman heat sink. I very carefully cleaned both surfaces with cotton buds and methylated spirits (ethanol+10%methanol + purple colouring), then a dry screen wipe. A small, grain of rice size, blob of zalman thermal grease in the middle of the heat spreader. As in arctic silver instructions, rotated hs a few degrees to make sure it spreads and screwed tight carefully.
Initially looking good, although temperatures were pretty much the same as the stock HSF: idle with cool'n'quiet at 1000Mhz 33-35C, under load at 2010Mhz creeping up to 52-53C. I used Corecenter to manual hold the fan at full speed (2600rpm). Ran set@home for 10 minutes, and I was just about to kill it, satisfied that I had fixed the problems, when the screen went blank and the machine started beeping! (I had never previously seen this, only lockups with the screen frozen).
Later I had one other screen freeze, but this time the temperature had not risen above 45C.
I have BIOS 1.44 which is much better for temps than the BIOS is was shipped with, but I still do not really trust these measurements.
I am pretty sure the Zalman heat sink is installed properly - my only slight concern was the use of methylated spirits to clean it.
Looks like I will go back to the stock HSF over the weekend.
thanks for the help

Load Balancing Linux servers with CSS 11050 series

We would like to load balance Linux FTP and Web servers with a CSS 11050 series device. Does the content switch use SNMP to load balance the servers? If so, which MIBs need to be loaded on the servers?

I dont believe that the CSS supports any SNMP load balancing mechanism.
There is basically two factors involved in load balancing. One: the state of the servers which can be done via a range of mechanisms including ping, TCP connection, Application request, etc. Two: the way a server is chosen when a request comes in including round-robin, least connections, ACA etc.
Checkout these links:-
http://www.cisco.com/warp/customer/117/basic_css_lb_config.html
http://www.cisco.com/warp/customer/117/methods_load_bal.html

SQL*Loader on Linux AS4

I am trying to execute SQL*Loader from Linux prompt (OS is RHEL AS4) and system is not able to recognize sqlload.
I am able to log on to sqlplus but not sure why or what needs to done to be able to invoke sqlload from linux command prompt.
Thx for any help.

You will have to install the full client software. Pl be aware that Ubuntu is not a certified OS to install Oracle software
HTH
Srini

Battery level dropping under load while plugged in

Hi all,
I'm, the otherwise happy owner of a retina Macbook Pro form July 2014 (with a 85w power supply)
I have the issue that, whenever my computer is under load and uses the discrete graphics card, its dropping power - even though the charger was connected.I know the discrete graphics card uses up more power, but honestly it cannot be true that if I play a game in high settings on the macbook (which only has a keyboard, mouse and charger connected in that case), then the battery drops... It cannot sustain itself or what? (I have never experienced this with any other laptop, so I hope for the love of God, this is not what to expect).
Also, just the other day, I was using 2x external monitors (with their own power supplies), and just watching a Twitch (videogame stream) in a browserwindow on one of the screens, and the charge started dropping, even while plugged in again -- it dropped maybe (a wild guess) 10% an hour or so.
The setup there was: I had iMessage open on the screen on the macbook - nothing else; I had a PDF displayed on the first external screen and I had a browser-window open with a video-stream on the second external screen. A mouse, keyboard, powersupply and 2x videooutputs (1x HDMI, 1x DisplayPort), was connected to the macbook at that moment...
I mentioned that I couldnt play anything with high settings, or watch a videostream while using external monitors without draining the battery power to a friend that has had a few macs - he had note experienced it before, and told me to post in here (After we agreed that since the external displays had their own power supplies, they shouldn't be dealbreakers). I'm hoping you can help me shed some light on the issue and help me. If something might need to be sent back to Apple for replacement, I'd rather do it before I personalize it too much.
Thanks alot!

Thanks for the answers I see.... A shame since the 85W charger is by my understanding the highest wattage one Oh well, thanks!

11g1 automatic startup under Fedora 9 Linux quit working

11g1 automatic startup under Fedora 9 Linux worked for months
Now I have to start 11g1 manually!
since then I've been doing regular yum updates to a number of new kernels
currently :
LMKIII (root) /var/log [600|http://forums.oracle.com/forums/]>uname -a
Linux LMKIII 2.6.27.19-78.2.30.fc9.i686 #1 SMP Tue Feb 24 20:09:23 EST 2009 i686 i686 i386 GNU/Linux
on boot page, the usual command that starts 11g1 just zips on by
I've looked in the boot messages to no avail. Still looking.
Has to be a kernel change because I've lect 11g1 alone for months

I did a www.ask.com for "dbstart pam.d" and got the answer.
pam.d and SELINUX are very complex.
I am still wary of lurking problems!
Apr 16 18:43:57 LMKIII sshd[2176]: Server listening on 0.0.0.0 port 22.
Apr 16 18:44:10 LMKIII rshd[2473]: PAM unable to dlopen(/lib/security/pam_rhosts_auth.so): /lib/security/pam_rhosts_auth.so: cannot open shared object file: No such file or directory
Apr 16 18:44:10 LMKIII rshd[2473]: PAM adding faulty module: /lib/security/pam_rhosts_auth.so
Apr 16 18:44:11 LMKIII rshd[2473]: pam_rhosts(rsh:auth): denied access to [email protected] as oracle
Apr 16 18:44:11 LMKIII rshd[2473]: pam_unix(rsh:session): session opened for user oracle by (uid=0)
Apr 16 18:45:11 LMKIII rshd[2473]: pam_unix(rsh:session): session closed for user oracle
Apr 16 18:49:07 LMKIII kdm: :0[2881]: pam_unix(kdm:session): session opened for user oracle by (uid=0)
Apr 16 18:50:41 LMKIII su: pam_unix(su-l:session): session opened for user root by oracle(uid=503)
Apr 16 18:54:46 LMKIII su: pam_unix(su-l:session): session closed for user root
Apr 16 18:54:49 LMKIII kdm: :0[2881]: pam_unix(kdm:session): session closed for user oracle
Apr 16 18:55:01 LMKIII sshd[2176]: Received signal 15; terminating.
Apr 16 18:56:55 LMKIII sshd[2171]: Server listening on 0.0.0.0 port 22.
Apr 16 18:57:08 LMKIII rshd[2473]: PAM unable to dlopen(/lib/security/pam_rhosts_auth.so): /lib/security/pam_rhosts_auth.so: cannot open shared object file: No such file or directory
Apr 16 18:57:08 LMKIII rshd[2473]: PAM adding faulty module: /lib/security/pam_rhosts_auth.so
Apr 16 18:57:09 LMKIII rshd[2473]: pam_unix(rsh:session): session opened for user oracle by (uid=0)
Apr 16 18:58:09 LMKIII rshd[2473]: pam_unix(rsh:session): session closed for user oracle
Apr 16 18:59:26 LMKIII kdm: :0[2880]: pam_unix(kdm:session): session opened for user oracle by (uid=0)
Apr 16 19:00:31 LMKIII su: pam_unix(su-l:session): session opened for user root by oracle(uid=503)
Apr 16 19:01:50 LMKIII su: pam_unix(su-l:session): session closed for user root
Apr 16 19:02:23 LMKIII su: pam_unix(su-l:session): session opened for user root by oracle(uid=503)
Apr 16 20:48:14 LMKIII sshd[4117]: Address 194.80.134.6 maps to no-reverse-defined.ja.net, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
Apr 16 20:48:14 LMKIII sshd[4117]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=194.80.134.6 user=root
Apr 16 20:48:16 LMKIII sshd[4117]: Failed password for root from 194.80.134.6 port 51090 ssh2
Apr 16 20:48:16 LMKIII sshd[4120]: Connection closed by 194.80.134.6
Apr 16 21:11:12 LMKIII sshd[4287]: Address 194.80.134.6 maps to no-reverse-defined.ja.net, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
Apr 16 21:11:12 LMKIII sshd[4287]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=194.80.134.6 user=root
Apr 16 21:11:14 LMKIII sshd[4287]: Failed password for root from 194.80.134.6 port 53791 ssh2
Apr 16 21:11:15 LMKIII sshd[4290]: Connection closed by 194.80.134.6
Apr 16 21:28:54 LMKIII sshd[4383]: Address 194.80.134.6 maps to no-reverse-defined.ja.net, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
Apr 16 21:28:54 LMKIII sshd[4383]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=194.80.134.6 user=root
Apr 16 21:28:55 LMKIII sshd[4383]: Failed password for root from 194.80.134.6 port 44904 ssh2
Apr 16 21:28:56 LMKIII sshd[4386]: Connection closed by 194.80.134.6
Apr 16 21:46:47 LMKIII sshd[4481]: Address 194.80.134.6 maps to no-reverse-defined.ja.net, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
Apr 16 21:46:48 LMKIII sshd[4481]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=194.80.134.6 user=root
Apr 16 21:46:50 LMKIII sshd[4481]: Failed password for root from 194.80.134.6 port 36020 ssh2
Apr 16 21:46:50 LMKIII sshd[4484]: Connection closed by 194.80.134.6

Why has my mail started storing under Load More Messages. I'm now unable to access my mail messages.

Why has my mail started storing under Load More Messages. I'm now unable to access my mail messages.

This is my basic, first start, recommended "fix" when these types of weird, unexplained things occur on the iPad. Give it a try. After you reboot, go back to the mail app and see if the messages will load.
Quit the mail app completely and reboot the iPad.
Go to the home screen first by tapping the home button. Double tap the home button and the recents tray will appear with all of your recent apps displayed at the bottom. Tap and hold down on any app icon until it begins to wiggle. Tap the minus sign in the upper left corner of the app that you want to close. Tap the home button or anywhere above the task bar.
Reboot the iPad by holding down on the sleep and home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider if it appears on the screen - let go of the buttons. Let the iPad start up.

Invoking SQL Loader from linux - Help Needed

Hi All,
When i tried to invoke the sql loader from linux by using following command
sqlldr username@server/password control=loader.ctl
But its always throws this message
Message 2100 not found; No message file for product=RDBMS, facility=ULMessage 2100 not found; No message file for product=RDBMS, facility=UL
Can somebody help me to fix this issue?

You may need to set your Oracle environment, try this ($ is the command prompt):
$ export ORACLE_SID=orcl
$ . /usr/local/bin/oraenv
$ sqlldr username@server/password control=loader.ctl:p

Dv8315nr drops to battery while plugged in, especially under load

Have the dv8315nr and it keeps dropping to battery while plugged in, especially when the PC is under load, such as games or using CD drive. The power block is ok, it has been tested with other power blocks and the issue still happens. If you unplug the power at the pc and plug it back in, it will (most of the time) go back into a charging state. I sent to hp while under the extended warranty and they sent it back with the diagnosis of "battery was bad, needed new battery".....and it worked ok until just out of warranty then started again.
I don't think it's the battery, since it happens with or without the battery in place (of course it dies completely when the power drops w/o battery in).
Has anyone experienced this and if so, have a method to fix it? I suspect there is a hardware problem with the power supply in the laptop.
This question was solved.
View Solution.

It sounds like the beginning stages of a bad power jack. That is the place where you insert the AC adapter into the laptop. The problem is very common and requires that a new jack be installed. Fortunately for you, the dv8000 has the power jack as a separate plug-in module...it does not require soldering just removal and replacement.
Here is an internet ad for a company that does the repair. I am not suggesting you hire them but they do post some nice pictures of the internal workings of the dv8000 series so you can understand what I am writing about. The repair job is only modestly hard; not nearly as bad as if soldering were needed. The part is readily available.
Repair ad with pictures

X220 - What's your CPU temp under load?

Running SC2 for a few minutes and my CPU was sitting at 92 C consistently (i5 2520). Yikes!
What temperatures are you getting under load?
43C idle.

no not really, it seems the problem only came after the recent BIOS update. I will have a look at this issue when i have more time on my hand.
When running on battery saver mode, the temperature drops to 45 degrees, which is good as this is the setting i use most of the time.
P.S. The ambient temperature in Australia is more than 30 degrees celsius, so that could also contribute to the issue of overheating.
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

VXI support under LabVIEW for Linux

A potential client contacted me regarding a small project using VXI hardware under Linux. I'm considering using LabVIEW for Linux but I'm not too clear on NI's VXI driver support and whether they have a VI library for the particular hardware. I contacted NI tech support over the phone but they didn't have any answers. BTW, I've used LV with PCI and ISA DAQ boards under Windows and Linux but I've never used VXI.
Here is the hardware in question:
PCI/VXI-MXI-2(8026) - PCI to VXI bridge
VXI-AO-48XDC - 48 channel analog output board
VXI-MIO-64XE-10 - multifunction DAQ board
Anyone know what's involved in building a LV app for this system under Linux, i.e. what's NI's HW driver and LabVIEW support?
-kevin

Kevin,
National Instruments has NI-VXI for Linux. The driver provides support for the PCI/VXI-MXI-2(8026), and VXI embedded Controllers. The NI-VXI driver also provides the programming API that will allow you to communicate with the VXI boards in your system.
You can find a KnowledgeBase that shows what versions of Linux are currently supported by NI-VXI here.
If you have never used VXI before I should note that it is different from using a PCI DAQ card. You might want to read this here which will explain a little about VXI.
The LabVIEW for Linux system requirements can be found here. I should note that LabVIEW will work on the 2.6 kernel, however since you are looking at NI-VXI you will need to use the 2.4 kernel anyway.
Hopefully this answers your question, but if you have any further questions feel free to ask!
Shawn B.
National Instruments
Use NI products on Linux? Come join the NI Linux Users Community

W520 corei7 2720QM - 1 core is throttled under load!

Hi all,
I've been using my w520 for almost 2 years. It ran really great until recenty (these 2 weeks), I noticed that the core 2 & 3 constantly ran 20 degreer higher than core 0 and 1 under stress (i.e. wPrime) - please see img1 below as the screen shot of CPUID that shows the temperature under load.
In HWiNFO64 (img2) also shows that the core 3 was THROTTLED under stress.
All cores look fine after wPrime finished (img3).
Here's the configuration: corei7 2720QM, 1000M, 8GB ram, 500HD.
I just updated the bios to ver 1.38 in December, I'm not sure whether this is the cause of the 1 core throttle or not.
Has anyone experienced the same thing? Or does it sound like a CPU failure to you?
Thanks!!
Jan
img1 - CPUID
Link to image 1
img2 - HWiNFO64 system running wPrime
Link to image 2
img3 - HWiNFO64 wPrime finished
Link to image 3
Moderator comment: Image(s) >50KB converted to link(s). Community Rules.

Ok, I've reverted the BIOS back to ver 1.36 and then 1.32, the same throttling is still happening when running wPrime. Core 2 and 3 are consistently 20c higher than others when under load ...
I recall that the temperature on all the cores under load was like 85c max before ... and the machine was able to complete wPrime 32M under 10s, now it takes >11s everytime due to the throttling.
I've called Lenovo support 2 days ago, they said their safety team will contact me as it sounds like an overheating issue. However, i still haven't recevied any call from them ...
Can any tech. support from Lenovo help on this issue please?
Thanks!!

JDK 1.3.1_08 Under load on linux (RH7.3)

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