OnAlarm/wait thread count configuration in BPEL
BPEL 10g, We have a com.oracle.bpel.expirationAgent.threadCount property to set the thread count for OnAlarm/wait. ORACLE_HOME/bpel/domain/DOMAIN_NAME/config/resources-quartz.properties.
BPEL 11g, Can you please point me the configuration file to set the thread count for OnAlarm/wait. I could not find the resources-quartz.properties in SOA 11g.
Have you been able to find the file or a similar properties location in 11g? I am also looking for it.
Similar Messages
-
Configuring Execute Thread Count
Hi,
I am working on a webapp thats using Weblogic 8.1 (SP2) as the application server.
The admin server for Weblogic currently provides 2 execute threads as default.
However I was wondering if I can configure the admin server for a higher number
of execute threads.
I have the following questions:
1.> Does configuring the number of threads for the admin sever provide any additional
value? has any one come across a big application where more than 2 execute threads
are required for the admin server?
2.> If yes, is it possible to configure the number of execute threads for the
admin server? I did some search on the bea website and didnt find anything that
explicitly says that the property is configurable. Is this true?
3.> If it is configurable, then how do we go about setting it up?
If anyone has worked around this and can provide me with any information or references,
that would be great.
ThanksSriram,
Take a look at the following URL for setting the thread count in WLS 6.1
http://edocs.bea.com/wls/docs61/perform/WLSTuning.html#1112343
Chuck Nelson
Developer Relations Engineer
BEA Technical Support
-
I have had various versions of Visual Studio installed beside Visual Basic 6.0 Enterprise for some time with no problems, most recently Visual Studio 2012 Premium.
I recently installed Visual Studio 2013 Premium, and now every time I open VB6 I get a dialog that says "Please wait while Windows configures Microsoft Visual Studio Professional 2013" that shows a progress bar. After it finishes (30 seconds or
so), it launches again and again and finally VB6 will open. This happens with each instance of VB6, regardless if I've already done it once and never run VS2013 in between.
If I cancel the dialog, I get this error message in a dialog: "Error 1712. One or more of the files required to restore your computer to its previous state could not be found. Restoration will not be possible." Several more "Please wait"...
dialogs will appear and if I continue to cancel, eventually I'll get the VB6 editor. It appear to work fine despite the error messages.
It seems to me that the VS2013 installer flagged some dll's or other files to be rolled back whenever starting VB6. It doesn't appear to be necessary, and I'd like to avoid playing the "Please wait" wack-a-cancel-button game before launching each
instance of VB6 (or waiting several minutes for no reason). So how do I fix this?
Note: I've seen something similar happen in Outlook on a different PC when upgrading from 2010 to 2013. The same sort of "Please wait"... dialog would appear each time I opened Outlook. Judging by the "similar" questions that popped up when
entering this forum post, I'd say this is a general problem with upgrading older versions or installing newer versions of major Microsoft software side-by-side.
/* Don Reynolds */I found the answer!
I was having the exact same issue, and I was search for a solution and I happened across the following thread: http://social.msdn.microsoft.com/Forums/en-US/f4b0fd38-f4f9-41ea-bd8d-834203a175d2/building-visual-studio-2010-project-triggers-please-wait-while-windows-configures-visual-studio?forum=vssetup&prof=required
Scroll a small bit down, and there is a post by Barry Wang explaining that you need to use event viewer to find out what is missing. Anyway, I opened event viewer, then open VS 6, then hit refresh in the event viewer (under Windows Logs -> Application)
and saw a warning message from MsiInstaller. It gave me the following message:
Detection of product '{9C593464-7F2F-37B3-89F8-7E894E3B09EA}', feature 'Visual_Studio_Professional_x86_enu', component '{E3FF99AA-78B9-4A06-8A74-869E9F65E1FE}' failed. The resource 'C:\WINDOWS\Microsoft.NET\Framework\URTInstallPath_GAC\' does
not exist.
I opened an elevated command prompt, I navigated to the C:\WINDOWS\Microsoft.NET\Framework folder and verified that 'URTInstallPath_GAC' didn't exist, and then I did "md URTInstallPath_GAC".
Closed and reopened VS 6, and it instantly opened - no "Please wait" message.
Now this may or may not be the same problem you are having (problem is - I have had it happen on two separate computers now with VS 6 and VS 2013 installed), but it should point you in the right direction. In fact, you should be able to use the Event Viewer
for anytime the "Please wait" message shows up for any application, and then once there find out what is really missing. -
Hi!
We are running a weblogic 5.1 server for jsp/servlet/ejb behind an apache web
server, via the wls/apache bridge. As the number of users increased we expereienced
slow response times. We checked thread dumps from peak hours and saw that all
servlet threads were busy writing to network sockets. Still, if we check the internet
line usage, we are not using up all our bandwith.
We've managed to solve this by adding more threads to our wls server (36 servlet
threads, 46 totally). This has however slowed down our database somewhat since
we have to increase the connection pool size with the number of server threads.
So my question would be: is there some other, more elegant, way to solve this?
Having 46 execute threads seems pretty much (15 is recommended from BEA). Ideally
I would like the wls threads to write their results as quickly as they can to
the apache server, disconnect from the socket and leave actual work of writing
all the data back to the end user's browser to apache. My network knowledge is
pretty limited so I'm not sure if this is possible.
/MattiasWhy do you need to have the maximum thread count equal to the maximum number of simulatneous users? You'll never end up with a system that has 60,000 threads.
If you are doing traditional-style HTTP, then typically you can support many thousands of users with just a few threads. For example, our SPECjAppServ er submissions use about 40 threads to handle 4000 clients. It all depends on how many requests each client actually makes per second, and how long each request takes. If the clients are idle for long periods of time, you could handle 10s of thousands with just a few threads.
The keep-alive tuning is also critical in that scenario, as the server will eventually start disconnecting clients, who will re-create the TCP connections. That works seemlessly from a functional point of view, but isn't necessarily the optimal thing for performance.
On the other hand, if you're trying to use a Web 2.0-style HTTP request where you simulate server pushes by having the servlet request block, then yes, in 8.1 you will need one thread per client, but you'll be bound by OS and other system constraints on the number of threads the process can have. You'd be much better off in that case using the Asynchronous Request processing features being added to AS 9.1 (see Sun's project glassfish for details).
For information on configuring the thread count for 8.1, see:
http://docs.sun.com/source/819-0215/httpservice.html
In particular -- the section on Configuring HTTP Service Request Processing Threads. -
I understand that the thread-count determines the number of service threads for a particular service. So, if the thread-count for the ordersCache is 10, then a max of 10 OrderProcessor agents would be able to process orders at the same time.
Questions:
1. What happens if an 11th agent is invoked? Does it wait in a queue, waiting for a service thread to be freed? If so, how long does it wait?
2. For pure reads, does the thread-count matter? For instance, if I have a "public static NamedCache testCache" shared across 15 threads that are reading from the cache and if the thread-count defined is 10, then does that mean that only 10 threads can do "cache.get" at the same time? If so, what happens when the 11th thread calls "cache.get"? Does it wait?
Thanks
GhanshyamHi Ghanshyam,
I understand that the thread-count determines the
number of service threads for a particular service.
So, if the thread-count for the ordersCache is 10,
then a max of 10 OrderProcessor agents would be able
to process orders at the same time.Yes.
Questions:
1. What happens if an 11th agent is invoked? Does it
wait in a queue, waiting for a service thread to be
freed? If so, how long does it wait?Yes, it waits until a thread is available.
Starting in release 3.3, it will be possible to specify a time-out and/or a priority for your operations.
2. For pure reads, does the thread-count matter? For
instance, if I have a "public static NamedCache
testCache" shared across 15 threads that are reading
from the cache and if the thread-count defined is 10,
then does that mean that only 10 threads can do
"cache.get" at the same time? If so, what happens
when the 11th thread calls "cache.get"? Does it
wait?Yes, it waits. An in-memory read is typically so quick that it would not be an issue, but it could be if the gets were going to a CacheLoader and the database was slow or blocked. In the upcoming 3.3 release, it will be possible to specify time-outs for those operations.
Peace,
Cameron Purdy
Tangosol Coherence: The Java Data Grid -
Query Regarding Execute Thread Count
Hi,
My understanding of Execute Thread Count is the threads which are assigned to service
requests coming to Weblogic Server.
In our current architecture a request for generating report is directed to EJB method
which makes a call to another Server (Report Server for executing reports), the report
Server in turn calls the EJB residing on Weblogic Server for getting the data.
So, is my assumption correct that with our current architecture we are limited to
concurrency of Execute Thread Count -1. (Every request for report will consume 2
Excute threads, and others will have to wait till the first request gets completed
and 2 threads are freed).
I also read from the postings that Weblogic takes some of the threads, so it actually
will be limited to (Execute thread count - Weblogic Held- 1).
Please corect me if I am wrong.
Thanks and Regards
RashmiHi,
Thanks very much for the suggestion. I tried, and it is using 2 Execute Threads.
Thanks
Rashmi
"Dave Martin" <[email protected]> wrote:
>
Rashmi:
If you are interested in answering the question rigorously, why not just
throw a
fake exception along both the report generation path and the runReport method
of
the ReportServer, then record their stack traces to a file for comparison?
From the sounds of it, your app wants to make the actual report generation
asynchronous
from the post of the reporting request. If they're really asynchronous,
then your
ReportServer must have some kind of blocking queue that will "wake up" when
it has
work to be done. Depending on how you implemented this, your runReport
method may
not be running a WebLogic execute thread at all.
Seems to me that you should be thinking of this as consuming one execute
thread regardless.
Even if the two pieces of work are asynchronous, the first thread finished
its work
at the point that it posts to the second thread (at least, per your description).
So at any one time, at max one execute thread is being consumed per request.
But capture the stack traces and have a look for yourself.
Dave Martin
"Rashmi S" <[email protected]> wrote:
Hi,
Thanks for your reply.The reason why I say 2 threads will be consumed is
as follows
1. First execute thread will be used for the request to Weblogic Server
to run the
report originating from a client.
2. Now, within the ReportServices EJB there is a call to Report Serverto
run the
report. The running of report is done on the Report Server which is ona
separate
m/c. Within the runReport method of the Report Server ,the data is fetched
for the
report by making a context look-up of another session EJB which fetches
the data.
So, the second Execute thread will be consumed for executing the EJB that
fetches
the data.
Am I correct?
Thanks and Regards
Rashmi
"Cameron Purdy" <[email protected]> wrote:
Incoming requests (from outside the server) use one thread for the duration
of their processing. Previous to their processing they are queued until
a
thread is available. So you would use one thead per concurrent request,
not
two. Otherwise, it sounds right.
Peace,
Cameron Purdy
Tangosol, Inc.
Clustering Weblogic? You're either using Coherence, or you should be!
Download a Tangosol Coherence eval today at http://www.tangosol.com/
"Rashmi S" <[email protected]> wrote in message
news:[email protected]...
Hi,
My understanding of Execute Thread Count is the threads which are assignedto service
requests coming to Weblogic Server.
In our current architecture a request for generating report is directedto EJB method
which makes a call to another Server (Report Server for executingreports), the report
Server in turn calls the EJB residing on Weblogic Server for getting
the
data.
So, is my assumption correct that with our current architecture we arelimited to
concurrency of Execute Thread Count -1. (Every request for report willconsume 2
Excute threads, and others will have to wait till the first request
gets
completed
and 2 threads are freed).
I also read from the postings that Weblogic takes some of the threads,so
it actually
will be limited to (Execute thread count - Weblogic Held- 1).
Please corect me if I am wrong.
Thanks and Regards
Rashmi -
Thread count in a distributed service
Hi,
i needed some information on the thread-count attribute in a distributed service. i would like to know how do we decide on the thread count. would increasing the thread count in the tangosol-coherence.xml increase the performance of tangosol as well.
looking forward to your help
Thanks
JigsTo go into this a bit further...
Each service instance has its own primary thread. This thread has the option of using its own isolated thread pool if the thread-count is greater than zero. If the thread-count is zero, then all work will be performed by the primary service thread. If the thread-count is greater than zero, then all work will be performed by the thread pool (the primary thread acts as a task coordinator).
Note that the thread-count is per-service and per-cluster-member. Each cache service has a unique name. The CacheFactory class uses a single cache service instance for each cache type (Replicated/Distributed/etc). If you manually create additional cache services, they will each have their own isolated thread pools.
Additionally, each Invocation service has its own thread pool. This setting is very important as the Invocation service is quite often used to execute long-running user tasks. If the thread pool is saturated with user tasks, then further calls to the Invocation service will block until user tasks complete and threads become available. Using named Invocation service instances will allow you to isolate critical tasks for better application availability.
Note that this information is current as of Coherence 2.5, but may change in future releases as threading models have a huge impact on performance and scalability. Having said that, there are no significant changes planned at this point in time.
Jon Purdy
Tangosol, Inc.
=================
Added 2004-12-02 by JP:
Also, as a very specific instance, the backup copy(ies) of a distributed cache are created on the service thread ... this means that while backup copies are being created on a node, no new tasks will be dispatched to that service's thread pool. For in-memory backup copies, this is actually optimal as adding an item to a HashMap/HashTable is roughly as fast as handing it off to another thread. However, if the backup-copy is configured to disk-based storage (or other high-latency resource), an asynchronous backup implementation should be used to eliminate latency. See AsyncBinaryStore for more information. -
Thread Count Vs no of simultaneous users
Hi,
I have been testing my customer made adapter on WLI2.1 and WLS6.1SP1 for
simulataneous users access.
I found that as long as the no of simultaneous users is less than the Thread
Count defined for WLI, it works fine.
But if the no of users exceed the thread count, the server hangs.....idle
threads become 0.
Does my Thread Count always have to be greater than the no of simulatneous
users am expecting ?
Thanks
AmitIn my openion, yes, number of threads configured should be greater than simultaneous users.
Thanks
Niranjan -
Coherence Extend Thread count is decimal number monitored from JMX
Hi,
We set a thread count in the proxy server configuration as 10 and we have two proxies.
In the JMX report we getting following information,
Connections=3, Cpu=72964ms (0.0%), Messages=63354, Throughput=868.2912msg/sec, AverageActiveThreadCount=4.710551E-4, Tasks=14670, AverageTaskDuration=4.410225ms, MaximumBacklog=6, BytesReceived=46.8MB, BytesSent=88.9MB, ThroughputInbound=0bps, ThroughputOutbound=0bps
Connections=8, Cpu=16164ms (0.0%), Messages=112401, Throughput=6953.786msg/sec, AverageActiveThreadCount=0.0049326043, Tasks=34702, AverageTaskDuration=10.976889ms, MaximumBacklog=3, BytesReceived=13.2MB, BytesSent=6.62GB, ThroughputInbound=0bps, ThroughputOutbound=718Kbps
AverageActiveThreadCount=0.0049326043
can someone explain why AverageActiveThreadCount is in decimal?
Thanks
PrabYes, because each "sample" changes the average, such that after 10 samples, if 5 times there were 2 threads busy and 5 times there were 3 threads busy, the average would be 2.5.
Peace,
Cameron Purdy | Oracle Coherence
http://coherence.oracle.com/ -
our server has 4 cpus(double kernel), 8GB memory
windows 2003 <b>64bit</b>
we use netweaver 7.0 with sp6
how much <b>server node</b>
and how much threadcount for '<b>applicationthreadmanager</b>' or '<b>threadmanager'</b>(MIN MAX Thread count)
will increase <b>performance</b> ?
regardHey
The amount of 'applicationthreadmanager' or 'threadmanager'
is depended on two things:
1. The system you are using, for example XI, BI and etc.
2. The load on the system.
In general, the J2EE comes with default,
and if you are not having performance issues,
than you should keep this parameter without any change.
If you are having performance problems,
like describes in the following links, you should change the configuration:
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/oss_notes/sdn_oss_bc_mid/~form/handler%7b5f4150503d3030323030363832353030303030303031393732265f4556454e543d444953504c4159265f4e4e554d3d393530393231%7d
Example for XI configuration:
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/oss_notes/sdn_oss_bc_xi/~form/handler%7b5f4150503d3030323030363832353030303030303031393732265f4556454e543d444953504c4159265f4e4e554d3d393337313539%7d
How to configure number of concurrent processes in XI?
Example for Portal configuration:
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/oss_notes/sdn_oss_bc_jas/~form/handler%7b5f4150503d3030323030363832353030303030303031393732265f4556454e543d444953504c4159265f4e4e554d3d383236333931%7d
Here is an a link to the configure procedure:
http://help.sap.com/saphelp_nw04/helpdata/en/47/9a3e759e2141a7b03e4f37e6c14074/frameset.htm -
hi all !
i have a memory problem on my as903 on linux and now i'm confused about why there are 18 oc4j threads started for my 5 deployed applications (not to mention the others for administration!??).
right now i wonder if there is a way to configure this thread count ?
anyone of you solved this problem ?
aloisOC4J 903 releases and later have a configurable thread-pool, where you can set the upper and lower bounds for the number of threads to use.
I don't know that this will be the cause of the memory problem you mention, but if you want to tune it, then see: http://otn.oracle.com/docs/products/ias/doc_library/903doc_otn/generic.903/a97677/advanced.htm#1011968
cheers
-steve- -
Change the Execute Thread Count im weblogic9.2
Hi
I am trying to change the execute thread count in weblogic 9.2 but i am not able to find the location in weblogic Console to change it can any one help meHi,
In previous versions of WebLogic Server, processing was performed in multiple execute queues. Different classes of work were executed in different queues, based on priority and ordering requirements, and to avoid deadlocks. In addition to the default execute queue, weblogic.kernel.default, there were pre-configured queues dedicated to internal administrative traffic, such as weblogic.admin.HTTP and weblogic.admin.RMI. Now the Same thing is done using WorkManagers...
WebLogic Server, Version 8.1 implemented Execute Queues to handle thread management which allowed you to create thread-pools to determine how workload was handled. WebLogic Server still provides Execute Queues for backward compaitibility, primarily to facilitate application migration. However, new application development should utilize Work Managers to peform thread management more efficiently.
You can enable Execute Queues in the following ways:
* Using the command line option*
-Dweblogic.Use81StyleExecuteQueues=true
So in that Case ...*config.xml* entry will be like this:
<server>
<name>AdminServer</name>
<execute-queue>
<name>weblogic.kernel.Default</name>
<queue-length>256</queue-length>
</execute-queue>
<use81-style-execute-queues>true</use81-style-execute-queues>
<listen-port>7001</listen-port>
<web-server>
<web-server-log>
<file-name>../../logs/admin_access.log</file-name>
</web-server-log>
</web-server>
<listen-address>aaa.bbb.com</listen-address>
</server>
for more detailed Information Please refer to:
http://download.oracle.com/docs/cd/E11035_01/wls100/config_wls/self_tuned.html
Edited by: Jay SenSharma on Jan 20, 2010 3:42 PM -
Consumers count = thread count ?
Hello,
I've implemented on a wl cluster (10 6.1sp4 instances, patched with CR091195)
the approximated distributed destination pattern.
In my case the destination is a queue.
Every wl instance has thread count = 100.
I have 1 mdb, non transactional, and I haven't configured the max-beans-in-free-pool.
It happens, when I deploy the MDB, targetting it to the cluster, that I can see
on every wl instance (I have a monitoring program):
JMSRuntime.connectionsCurrentCount = 1
JMSConnectionRuntime.sessionsCurrentCount = 100 (I have only a "connection4116")
JMSDestinationRuntime.consumersCurrentCount = 100 (I have only 1 queue)
Why do I have all of these active consumers/sessions ?
(and I haven't yet run my jms client)
Thanks in advance
Best Regards
Mark
Hi Mark,
Before 6.1SP5, each MDB pool initializes
Math.min(default-execute-thread-pool-size,
max-beans-in-free-pool)
consumers and sessions.
For 6.1SP5 and later, each MDB pool initializes
Math.min(default-execute-thread-pool-size/2 + 1,
max-beans-in-free-pool)
consumers and sessions.
WL 7.0SP? (SP3 maybe?), and 8.1
allow MDBs to use the "dispatch-policy" descriptor field
and so assign themselves to a different
thread-pool. In which case initialized max concurrent
instances becomes:
Math.min(custom-thread-pool-size,
max-beans-in-free-pool)
I think that the max-beans-in-free-pool default is
some very high number. (At one point it was 1500).
The consumer instances will not necessarily all use
a thread at the same time, as they do not use
up a thread when they are not operating on a
message. In essence, thread usage depends on how
slow the receivers are, how fast the producers are, and
what other resources are also using
the thread pool.
I recommend tuning max-beans-in-free-pool so that total
instance count on a server is somewhat less than
the the thread count. This helps prevent dead-locks
where all threads are running app code, and none
are left to do other work.
In case you are unaware, I also recommend
using less than 100 threads unless the the
app typically blocks a thread for long periods of time.
The reason is that lots of threads may negatively
impact performance, the operating system ends up
burning CPU switching itself between threads
rather than doing actual work.
Each MDB deployment uses a single connection.
Hope this helps,
Tom, BEA
P.S. The above information will be in the next
iteration of the JMS Performance Guide white-paper,
which I've currently started working on again.
"Mark Cordobal" <[email protected]> wrote:
>
>Hello,
>
>I've implemented on a wl cluster (10 6.1sp4 instances, patched with CR091195)
>the approximated distributed destination pattern.
>In my case the destination is a queue.
>
>Every wl instance has thread count = 100.
>
>I have 1 mdb, non transactional, and I haven't configured the max-beans-in-free-pool.
>
>It happens, when I deploy the MDB, targetting it to the cluster, that
>I can see
>on every wl instance (I have a monitoring program):
>
>JMSRuntime.connectionsCurrentCount = 1
>JMSConnectionRuntime.sessionsCurrentCount = 100 (I have only a "connection4116")
>JMSDestinationRuntime.consumersCurrentCount = 100 (I have only 1 queue)
>
>Why do I have all of these active consumers/sessions ?
>(and I haven't yet run my jms client)
>
>
>Thanks in advance
>
>Best Regards
>
>
>Mark
-
When thread-count 65 /thread-count can imporve the performance
We are using very classical way get / put object with key for our application on embedding mode.
Application run on top Weblogic Server, Tangosol as embedding Lib.
in this case, tunning this parameter can improve performance or non?
Best regards.
Jerome
<invocation-scheme>
<scheme-name>InvocationScheme</scheme-name>
<service-name>InvocationService</service-name>
<thread-count>65</thread-count>
<autostart>true</autostart>
</invocation-scheme>Hi,
if I understand well: When we are using embedding mode with Weblogic Server, we are using the thread distributed by WLS, we don't need any thread by invocable Service thread, Am I right?
attached is one Thread dump, we are seeing a lot of wait lock, some one can give a more clear explanation? Sorry, it's quite long, but i can't use attach mode. I can send the summary
Best regards.
Jerome
========================================================================
Dump Files
Stat Count
Thread/Locks Dump_0 Dump_1 Dump_2 Dump_3 Dump_4 Total Average Lock Type
Total Active ExecuteThread 25 18 31 119 138 331
Total Waiting thread among Active ExecuteThread and with respect to Coherence related locks 22 15 28 116 134 315
1. Locks waiting by IMPI_IMPU_DAO.get_all_IMPU_of_IMSU_with_User_State(IMPI_IMPU_DAO.java:178) 25 DistributedCache$GetRequest$Poll
2. Locks waiting by IMPI_IMPU_DAO.get_all_IMPU_of_IMSU_with_User_State(IMPI_IMPU_DAO.java:186) 33 DistributedCache$GetRequest$Poll
3. Locks waiting by IMPI_IMPU_DAO.get_all_IMPU_of_IMSU_with_User_State(IMPI_IMPU_DAO.java:201) 40 DistributedCache$GetRequest$Poll
4. Locks waiting by IMPI_IMPU_DAO.get_by_IMPI_and_IMPU_ID(IMPI_IMPU_DAO.java:74) 8 DistributedCache$GetRequest$Poll
5. Locks waiting by IMPU_DAO.get_by_Identity(IMPU_DAO.java:201) 0 0 3 10 16 29 5.8 DistributedCache$GetRequest$Poll
6. Locks waiting by IMPU_DAO.get_by_Identity(IMPU_DAO.java:206) 0 0 7 23 1 31 6.2 DistributedCache$GetRequest$Poll
7. Locks waiting by IMPI_DAO.get_by_Identity(IMPI_DAO.java:105) 0 0 1 6 3 10 2 DistributedCache$GetRequest$Poll
8. Locks waiting by IMPI_DAO.get_by_Identity(IMPI_DAO.java:110) 0 0 0 3 7 10 2 DistributedCache$GetRequest$Poll
9. Locks waiting by IMSU_DAO.get_by_ID(IMSU_DAO.java:86) 2 0 2 4 9 17 3.4 DistributedCache$GetRequest$Poll
10. Locks waiting by Preferred_SCSCF_Set_DAO.get_all_from_set(Preferred_SCSCF_Set_DAO.java:81) 2 5 2 20 9 38 7.6 distributedCacheRequest.PartialRequest$Poll
11. Locks waiting by Preferred_SCSCF_Set_DAO.get_all_from_set(Preferred_SCSCF_Set_DAO.java:77) 1 5 0 0 12 18 3.6 distributedCacheRequest.PartialRequest$Poll
12. Locks waiting by CapabilitiesSet_DAO.get_all_from_set(CapabilitiesSet_DAO.java:77) 0 2 3 10 5 20 4 distributedCacheRequest.PartialRequest$Poll
13. Locks waiting by VisitedNetwork_DAO.get_by_Identity(VisitedNetwork_DAO.java:73) 0 0 2 15 5 22 4.4 distributedCacheRequest.PartialRequest$Poll
14. Locks waiting by IMPU_VisitedNetwork_DAO.get_by_IMPU_and_VisitedNetwork_ID(IMPU_VisitedNetwork_DAO.java:65) 1 0 3 4 6 14 2.8 DistributedCache$GetRequest$Poll
======================================================================== -
High thread count on store.exe
I understand that the mdb store process utilizes as much memory as is available. My question is regarding the thread count on the process. One of the three mailbox servers tends to have a higher thread count than the other two. It
usually ranges from 150 to 200 (while the other two are usually 130 to 150) but today it is a little over 300. The rpc thread count on all the mailbox servers stays pretty low (60 or under) and the rpc thread count on the CAS servers usually
hang out around 55-65, so that's all good. All three mailbox servers also use VERY close to the same amount of memory all the time, so that doesn't seem to be making a difference. I am just trying to determine why the thread count is noticably
higher. This server and one of other mailbox servers replicate the public folder database, and I can understand why that would account for some additional activity, but you would think the thread count would be higher on the other server with the public
folder database as well, but it stays pretty low. Hardware-wise these servers are all identical. So is there something I can monitor in perf mon for instance? I don't want to use experfwiz because that monitors everything under the sun and
I need it a bit more centralized. I have googled all over the place and the only thing I can find is that with newer versions of exchange this thread count ranges from 200-300 on heavy usage, and exch07 can handle up to 500 threads, so I can't even find
which specific things to monitor that directly correlate with this issue. So while I understand that it's not really too high, I would like to find out why it deviates from the norm if the other two servers are equal for all intents and purposes (same
hardware, balanced DAG. etc). I would like to mitigate any potential issues. Thank you.Hi pchw,
Thank you for your question.
I am sorry that we could not find the specific things to monitor this issuer directly, because there are many reason which caused it. For example: virus, big size attachment in queue, hardware performance and so on. We could refer to the following steps
to troubleshoot:
Restart the service of “Microsoft Exchange transport”;
Create a new database and move mailbox to new mailbox;
We could do some disk health check if the load test is normal;
Collect related application log and system log to
[email protected] for our troubleshooting.
We could run SDP on Exchange server and send it to
[email protected] for our troubleshooting.
http://blogs.msdn.com/b/askie/archive/2012/05/22/introduction-to-support-diagnostics-platform-sdp.aspx
We could use tools and logs to analysis if there are anything wrong or abnormal on Exchange server 2013. our bottle neck is disk IO latency, store.exe do require some CPU usage, but if our disk IO speed can keep in a normal range, the
CPU usage will be smaller. Exchange is highly rely on disk IO performance because it need lots of IO operation regarding to transaction log and database file. If Disk IO has a high latency, I will definitely impact store.exe, if it`s getting seriously sometimes
it may cause store.exe no response.
We could refer to the following link:
https://technet.microsoft.com/en-us/library/ee832791(v=exchg.141).aspx
If there are any questions regarding this issue, please be free to let me know.
Best Regard,
Jim
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