Power load flow algorithms in Java
I have a project in hand,its about implementing power alorgithms using java,and i am very new to java programming.I need help in this area.Is there anyone who has the experience in writting tutorial packages(eg for electrical topics)?
thxk!
P=I*E;
Ummmm.... Pie
Similar Messages
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Hyper-V NIC Team Load Balancing Algorithm: TranportPorts vs Hyper-VPorts
Hi,
I'm going to need to configure a NIC team for the LAN traffic for a Hyper-V 2012 R2 environment. What is the recommended load balancing algorithm?
Some background:
- The NIC team will deal with LAN traffic (NOT iSCSI storage traffic)
- I'll set up a converged network. So there'll be a virtual switch on top of this team, which will have vNICs configured for each cluster, live migration and management
- I'll implement QOS at the virtual switch level (using option -DefaultFlowMinimumBandwidthWeight) and at the vNIC level (using option -MinimumBandwidthWeight)
- The CSV is set up on an Equallogics cluster. I know that this team is for the LAN so it has nothing to do with the SAN, but this reference will become clear in the next paragraph.
Here's where it gets a little confusing. I've checked some of the Equallogics documentation to ensure this environment complies with their requirements as far as storage networking is concerned. However, as part of their presentation the Dell publication
TR1098-4, recommends creating the LAN NIC team with the TrasportPorts Load Balancing Algorithm. However, in some of the Microsoft resources (i.e. http://technet.microsoft.com/en-us/library/dn550728.aspx), the recommended load balancing algorithm is HyperVPorts.
Just to add to the confusion, in this Microsoft TechEd presentation, http://www.youtube.com/watch?v=ed7HThAvp7o, the recommendation (at around minute 8:06) is to use dynamic ports algorithm mode. So obviously there are many ways to do this, but which one is
correct? I spoke with Equallogics support and the rep said that their documentation recommends TransportPorts LB algorithm because that's what they've tested and works. I'm wondering what the response from a Hyper-V expert would be to this question. Anyway,
any input on this last point would be appreciated.Gleb,
>>See Windows Server 2012 R2 NIC Teaming (LBFO) Deployment and Management for more
info
Thanks for this reference. It seems that I have an older version of this document where there's absolutely
no mention of the dynamic LBA. Hence my confusion when in the Microsoft TechEd presentation the
recommendation was to use Dynamic. I almost implemented this environment with switch dependent and Address Hash Distribution because, based on the older version of the document, this combination offered:
a) Native teaming for maximum performance and switch diversity is not required; or
b) Teaming under the Hyper-V switch when an individual VM needs to be able to transmit at rates in excess of what one team member can deliver
The new version of the document recommends Dynamic over the other two LBA. The analogy that the document
makes of TCP flows with human speech was really helpful for me to understand what this algorithm is doing. For those who will never read the document, I'm referring to this:
"The outbound loads in this mode are dynamically balanced based on the concept of
flowlets. Just as human speech has natural breaks at the ends of words and sentences, TCP flows (TCP communication streams) also have naturally
occurring breaks. The portion of a TCP flow between two such breaks is referred to as a flowlet. When the dynamic mode algorithm detects that a flowlet boundary has been encountered, i.e., a break of sufficient length has occurred in the TCP flow,
the algorithm will opportunistically rebalance the flow to another team member if apropriate. The algorithm may also periodically rebalance flows that do not contain any flowlets if circumstances require it. As a result the affinity
between TCP flow and team member can change at any time as the dynamic balancing algorithm works to balance the workload of the team members. "
Anyway, this post made my week. You sir are deserving of a beer! -
Port Channel Load-Balancing Algorithm (North Bound)
I'm trying to figure out what the load balancing algorithm for the 6100 and 6200 FIs for the Northbound connections. I can't find any documentation on how to change it.
The Nexus 7000s use an 8-bit hash, making it very easy to do something other than 2, 4, or 8 link port channel and get even (at least algorithmically) distribution.
Catalyst switches (not sure about Sup2T though) would use a 1, 2, or 3-bit index, which would skew traffic algorthmically if you used a non-power of 2.
Looking at the 5K documentation, it seems to use the Catalyst style (though haven't been able to confirm). My guess is that whatever is used for the 5Ks is used for the 6100/6200.
Design wise, this would mean you would want to use powers of 2 for your NB uplinks.Hello Tony,
On UCS FI, it uses " sr-cdest-ip " as the load balancing algorithm and uses 8 parameters for hashing
6248-01-B(nxos)# sh port-channel load-balance
Port Channel Load-Balancing Configuration:
System: source-dest-ip
Port Channel Load-Balancing Addresses Used Per-Protocol:
Non-IP: source-dest-mac
IP: source-dest-ip source-dest-mac
6248-01-B(nxos)# show platform fwm info pc port-channel 1
dump pc info: if_index 369098752 dump_all 0 verbose 1
Po1: state 0x0 #pifs 1 fwimpd ctx 0x9666c1c
Po1: hash params - l2_da 1 l2_sa 1 l3_da 1 l3_sa 1
Po1: hash params - l4_da 1 l4_sa 1 xor_sa_da 1 hash_elect 1
I could not find an option to change these values.
Padma -
El Gamal Algorithm and Java problem
I was trying to implement the El Gamal algorithm in java, but the problem is with the last part. I'm not getting the value of Message but according to algorithm i should get the value of message. Can anyone please tell me what did i do wrong?
theory says, msg = x * (z^a)modInverse(p);
import java.math.BigInteger;
import java.math.*;
import java.util.*;
class ElGamel
public static void main(String[] args)
BigInteger p = new BigInteger("7747");
BigInteger q = new BigInteger("3853");
BigInteger a = new BigInteger("773");
BigInteger k = new BigInteger("1193");
BigInteger msg = new BigInteger("39");
BigInteger y = new BigInteger("0");
BigInteger x = new BigInteger("0");
BigInteger z = new BigInteger("0");
BigInteger temp = new BigInteger("0");
BigInteger t2 = new BigInteger("0");
int t1 = 0;
y = q.modPow(a,p);
System.out.println("Y is "+y);
x = q.modPow(k,p);
System.out.println("X is "+x);
t1 = k.intValue();
z = (msg.multiply(y.pow(t1))).mod(p);
System.out.println("Z is "+z);
t1 = a.intValue();
x = x.pow(t1);
temp = x.modInverse(p);
msg = z.multiply(temp);
System.out.println("Message is "+msg);
}Reposting your code with markup. In future please use [code] tags, as you can see the effect it has on legibility: import java.math.BigInteger;
import java.math.*;
import java.util.*;
class ElGamel
public static void main(String[] args)
BigInteger p = new BigInteger("7747");
BigInteger q = new BigInteger("3853");
BigInteger a = new BigInteger("773");
BigInteger k = new BigInteger("1193");
BigInteger msg = new BigInteger("39");
BigInteger y = new BigInteger("0");
BigInteger x = new BigInteger("0");
BigInteger z = new BigInteger("0");
BigInteger temp = new BigInteger("0");
BigInteger t2 = new BigInteger("0");
int t1 = 0;
y = q.modPow(a,p);
System.out.println("Y is "+y);
x = q.modPow(k,p);
System.out.println("X is "+x);
t1 = k.intValue();
z = (msg.multiply(y.pow(t1))).mod(p);
System.out.println("Z is "+z);
t1 = a.intValue();
x = x.pow(t1);
temp = x.modInverse(p);
msg = z.multiply(temp);
System.out.println("Message is "+msg);
} -
Hi,
I purchased Huawei Dongle and trying to connect with my new MacBook Pro (OS- Mountain Lion) USB port 3.0 but unfortunately it does not support.
When I plugged in my macbook the power is flowing in dongle due green light blinking twice in every 3 sec but no connection found or diver shown.
Please let me know how I have to use it. I got some suggestion for USB hub 2.0 but It does not make any sense and driver installation.
So please suggest proper direction to use it and provide link to install any driver.
Thanks
Tauheed AhmadYes Clinton I did same, but they were (Huawei customer support) surprised about this problem, They behave like they have no idea about USB 2.0 and 3.0 knowledge. They handsUp that reason I posted my problem in this forum.
So is there any better solution to use any mediator between these USB version handling, Please let me know.
Thanks
Tauheed -
How to redirect loading flow in process chain based on logic?
Hi Experts,
I have a scenario where I want to keep data for last 3 years in 3 different cubes.e.g. lets say cube 1 holds data for current 2006 year, cube 2 holds 2005 and cube 3 holds 2004.Now in next year 2007, I want to keep data for 2007, 2006 and 2005.I want to keep data for 2007 in cube 3 which was holding 2004 data.(delete 2004 data and load 2007).
This process should be automated i.e. which cube to load should be done auto.In short, <b>data for new cube should go into cube which is holding data for oldest year.</b>
I want to know :
1) Which Options I can use to do this?
2) What about ABAP program : custom table can be maintained to know which cube is holding what data, but how to redirect loading flow?
3) What about "Decision process type" in process chain?
4) Also would custom process type solve this functionality?
Any ideas would be highly appreciated.
Thanks in advance,
SorabhHi Sorabh,
Its just an Idea, Im assuming that this would work. This should also work for INIT DELTA I guess. But would need proper testing.
Have a Custom Table ZCUBEYEAR and maintain the CUBE as the Key.
ZCUBEYEAR
CUBE YEAR
Y1 2004
Y2 2005
Y3 2006.
In the update rule->Start Routine for Cube Y1, extract this entry from the table ZCUBEYEAR for Y1, which in this case would be 2004.
DELETE DATA_PACKAGE WHERE YEAR NE YEARFORCUBEY1.
in our case YEARFORCUBEY1 = 2004.
For cube Y2 and Y3 the Delete statement would be as follows in their Start Routines.
DELETE DATA_PACKAGE WHERE YEAR NE YEARFORCUBEY2.
DELETE DATA_PACKAGE WHERE YEAR NE YEARFORCUBEY3.
This would ensure that only 2004 data would flow to Y1, 2005 for Y2 and 2006 for Y3.
Once we come to a NEW YEAR, We need to run a program or Manually change the CUSTOM TABLE "ZCUBEYEAR" updating the cube Y1 with 2007, the Deltas would flow correctly.
Please email me at [email protected], we could have a detailed discussion.
Hope the above helps your cause.
Regards,
Praveen. -
Best way to make a Constant Power Load
What would be the best way to make a load that always draws the same amount of power whatever the voltage on it. For exemple, an load would draw 100 mA at 24 VDC, 150 mA at 18 VDC and 200 mA at 12 VDC. All I found is to use Nonlinear Dependant source.
Any easier way to do this? Thanks.Sorry about the file mix up, I was anxious to get it posted for you that I failed to realize you were using a different version.
As far as the last "amplifier" in your Leaky Feeder design, I actually hooked it up to the 24VDC supply on the left and this was a direct connect before the first resistor. I realize this is not what would be ideal for your application as probably you have only a certain place in the Leaker Feeder to tap off from. I would suppose this would be going into a different entry way off the main entry at an intersection so I do not know how my adjusting the placing of this would effect the results because it seems to me by doing this I have bypassed a bunch resistance in the Feeder cable itself (if that is what the resistors represent) and also bypassed a number of amplification stages in the process as well.
I will post a picture of my circuit for you to examine and try in Version 9. This is the only thing I could come up with to where the power draw was the same no matter what the voltage input was. The only thing I can see as a drawback is that with this circuit the current remains constant but the voltage fluctuates. If I use a 24V regualtor and drop the input voltage to 12V the current remains at approx 118ma but the voltage drops to 12V when I plug it into your circuit.. I will let you try it and see what you may be able to do with it.
Message Edited by lacy on 04-28-2008 05:47 PM
Kittmaster's Component Database
http://ni.kittmaster.com
Have a Nice Day
Attachments:
Possible Constant Power Load.JPG 285 KB -
Data Structures and Algorithms in java book
Hi guys,
I want to know a good book which is good for Data Structures and Algorithms in java. I am good at Core java but a beginner for Data Structures in Java. I am a little poor in Data Structures concepts.
Following are the books I have found on the net. Could you help me the choose the best outta them.
1. Data Structures and Algorithms in Java - Mitchell Waite
2. Data Structures in Java - Sandra Anderson
3. Fundamentals of OOP and Data Structures in Java - Richard Weiner & Lewis J. Pinson
4. Object Oriented Data Structures Using Java - Nell Dale, Daniel T. Joyce, Chip Weemslieni wrote:
I good data structures book doesn't have to be language-specific.Thx DrLazlo, my speachYes.
The OP wrote:
I have access to these books and dont know which one to start with.What I meant is that you shouldn't narrow your search to insist that the book you choose have "Java" in the title. -
ESXi 4.1 NIC Teaming's Load-Balancing Algorithm,Nexus 7000 and UCS
Hi, Cisco Gurus:
Please help me in answering the following questions (UCSM 1.4(xx), 2 UCS 6140XP, 2 Nexus 7000, M81KR in B200-M2, No Nexus 1000V, using VMware Distributed Switch:
Q1. For me to configure vPC on a pair of Nexus 7000, do I have to connect Ethernet Uplink from each Cisco Fabric Interconnect to the 2 Nexus 7000 in a bow-tie fashion? If I connect, say 2 10G ports from Fabric Interconnect 1 to 1 Nexus 7000 and similar connection from FInterconnect 2 to the other Nexus 7000, in this case can I still configure vPC or is it a validated design? If it is, what is the pro and con versus having 2 connections from each FInterconnect to 2 separate Nexus 7000?
Q2. If vPC is to be configured in Nexus 7000, is it COMPULSORY to configure Port Channel for the 2 Fabric Interconnects using UCSM? I believe it is not. But what is the pro and con of HAVING NO Port Channel within UCS versus HAVING Port Channel when vPC is concerned?
Q3. if vPC is to be configured in Nexus 7000, I understand there is a limitation on confining to ONLY 1 vSphere NIC Teaming's Load-Balancing Algorithm i.e. Route Based on IP Hash. Is it correct?
Again, what is the pro and con here with regard to application behaviours when Layer 2 or 3 is concerned? Or what is the BEST PRACTICES?
I would really appreciate if someone can help me clear these lingering doubts of mine.
God Bless.
SiMSim,
Here are my thoughts without a 1000v in place,
Q1. For me to configure vPC on a pair of Nexus 7000, do I have to connect Ethernet Uplink from each Cisco Fabric Interconnect to the 2 Nexus 7000 in a bow-tie fashion? If I connect, say 2 10G ports from Fabric Interconnect 1 to 1 Nexus 7000 and similar connection from FInterconnect 2 to the other Nexus 7000, in this case can I still configure vPC or is it a validated design? If it is, what is the pro and con versus having 2 connections from each FInterconnect to 2 separate Nexus 7000? //Yes, for vPC to UCS the best practice is to bowtie uplink to (2) 7K or 5Ks.
Q2. If vPC is to be configured in Nexus 7000, is it COMPULSORY to configure Port Channel for the 2 Fabric Interconnects using UCSM? I believe it is not. But what is the pro and con of HAVING NO Port Channel within UCS versus HAVING Port Channel when vPC is concerned? //The port channel will be configured on both the UCSM and the 7K. The pro of a port channel would be both bandwidth and redundancy. vPC would be prefered.
Q3. if vPC is to be configured in Nexus 7000, I understand there is a limitation on confining to ONLY 1 vSphere NIC Teaming's Load-Balancing Algorithm i.e. Route Based on IP Hash. Is it correct? //Without the 1000v, I always tend to leave to dvSwitch load balence behavior at the default of "route by portID".
Again, what is the pro and con here with regard to application behaviours when Layer 2 or 3 is concerned? Or what is the BEST PRACTICES? UCS can perform L2 but Northbound should be performing L3.
Cheers,
David Jarzynka -
Team,
I was reading Designing Content Switching Solutions last night. I came across a page that suggested Round Robin for HTTP connections, Least Conns for FTP connections, dst Hash for caching connections and so on.
Could someone please provide information or a link on which load balancing algorithm to use based on the application, is there some form of best practice for this?
Thank you,
John...John,
there is no best practices.
It depends on your applications and needs.
For example, for caching, some people prefer to optimize the disk space, and other the response time.
So, if you do destination hash, you guarantee that all traffic for one site is always handled by the same cache.
Therefore you optimize the disk space since you will not find the same object on all caches.
BUT if one site attracts a lot of connections, the cache device that handles that site will be overloaded (for example youtube.com)
Leastconn is a good option in theory.
The device that has less connections should receive the next one.
The problem is if you have flapping links or servers crashing or if you do a lot of maintenance and add/remove servers frequently.
This confuses the algorithm and is the source of a lot of bugs.
My recommendation is to go with roundrobin unless you have identify that you really need another algorithm.
And you can always start with roundrobin and see what happens...
Gilles. -
Load balancing algorithm for groups in RZ12
Hello,
I would like to know the load balancing algorithm for groups defined in RZ12.
I know that log on groups for external connections are administered via SMLG and table RZLLICLASS.
I also know that RFC resources can be managed for RFC logon groups via RZ12.
Kind regards,
Peter
<removed_by_moderator>
Point awarding is at your discretion, but read and follow the "Rules of Engagement"
Edited by: Juan Reyes on Dec 3, 2010 10:21 AMHello!
Found this post while searching information about RFC and Logon Groups...
I have some mess in my head with SMLG functionality and RZ12. As I know SMLG we can use to distribute users to application server instances, it gives us good achievement in performance. With RZ12 we can distribute RFC connection of particular job for parallel execution on predefined application server. With SMQS and SMQR transaction we can set "Name of AS Group" to route RFC-execution on certain server or servers. But I have troubles with understanding. Imagine, we set up group 1 with 2 servers (name it RFC_GR1), and group 2 with another 2 servers (name it RFC_GR2). How could qRFC scheduler decide on which RFC server group (RFC_GR1 or RFC_GR2) distribute RFC-execution? How to interact "Name of AS Group" with RFC groups if we can set only one group? How could we distribute RFC-execution depending on our logon groups (smlg)? We would like to distribute RFC depending on SAP logon groups. Is it possible? Or do I compare apple and orange?
Regards,
Artem Ivashkin -
Unable to load performance pack, using Java I/O.
Hi there,
I am trying to start weblogic 6.0 from jBuilder. It does start, and
working. But, I got the one problem about loading performance pack. The
message is the following. Any comment?
Thank you
----------------------------------------->Starting WebLogic Server ....
<Jun 27, 2001 1:35:13 PM EDT> <Notice> <Management> <Loading configuration
file C:\bea\wlserver6.0sp1\config\mydomain\config.xml ...>
log file:
C:\bea\wlserver6.0sp1\config\mydomain\config\config\mydomain\logs\weblogic.l
og
<Jun 27, 2001 1:35:14 PM EDT> <Info> <Logging> <Only log messages of
severity "Error" or worse will be displayed in this window. This can be
changed at Admin Console> mydomain> Servers> myserver> Logging> General>
Stdout severity threshold>
<Jun 27, 2001 1:35:46 PM EDT> <Notice> <WebLogicServer> <ListenThread
listening on port 7001>
<Jun 27, 2001 1:35:46 PM EDT> <Notice> <WebLogicServer> <WebLogic Server
started>
<Jun 27, 2001 1:35:46 PM EDT> <Error> <Performance Pack> <Unable to load
performance pack, using Java I/O.
java.lang.UnsatisfiedLinkError: no wlntio in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1312)
at java.lang.Runtime.loadLibrary0(Runtime.java:749)
at java.lang.System.loadLibrary(System.java:820)
at weblogic.socket.NTSocketMuxer.<init>(NTSocketMuxer.java:173)
at java.lang.Class.newInstance0(Native Method)
at java.lang.Class.newInstance(Class.java:237)
at weblogic.socket.SocketMuxer.makeTheMuxer(SocketMuxer.java:126)
at weblogic.socket.SocketMuxer.getMuxer(SocketMuxer.java:83)
at weblogic.t3.srvr.ListenThread.run(ListenThread.java:224)
>Thank you
But, it does not work. It does the same. Here is the message.
------------------------------------------------------------>C:\bea\jdk130\bin\javaw -classpath
"S:\Java\classes;C:\jdk1.3\jre\lib\rt.jar;S:\Java\lib\activation.jar;S:\Java
\lib\classes12.zip;S:\Java\lib\cos.jar;S:\Java\lib\dx3.0.jar;S:\Java\lib\dx3
.0-res.jar;S:\Java\lib\fscontext.jar;S:\Java\lib\j2ee.jar;S:\Java\lib\java40
.jar;S:\Java\lib\jgl3.1.0.jar;S:\Java\lib\jsdk21.jar;S:\Java\lib\junit.jar;S
:\Java\lib\mail.jar;S:\Java\lib\msclasses.zip;S:\Java\lib\rootriver.report.j
ar;S:\Java\lib\servlet.jar;S:\Java\lib\ServletExecDebugger.jar;S:\Java\lib\s
truts.jar;C:\bea\wlserver6.0sp1\lib\weblogic.jar;C:\bea\wlserver6.0sp1\lib\x
mlx.jar;C:\bea\wlserver6.0sp1\bin;C:\junit3.5\junit.jar;C:\jakarta-struts-1.
0-b1\lib\struts.jar;C:\JBuilder4\jdk1.3\demo\jfc\Java2D\Java2Demo.jar;C:\JBu
ilder4\jdk1.3\jre\lib\i18n.jar;C:\JBuilder4\jdk1.3\jre\lib\jaws.jar;C:\JBuil
der4\jdk1.3\jre\lib\rt.jar;C:\JBuilder4\jdk1.3\jre\lib\sunrsasign.jar;C:\JBu
ilder4\jdk1.3\lib\dt.jar;C:\JBuilder4\jdk1.3\lib\tools.jar" -ms64m -mx64m -
classpath
"C:\bea\wlserver6.0sp1;C:\bea\wlserver6.0sp1\bin;C:\bea\wlserver6.0sp1\lib\w
eblogic_sp.jar;C:\bea\wlserver6.0sp1\lib\weblogic.jar;S:\Java\classes;S:\Jav
a\lib\classes12.zip;C:\jakarta-struts-1.0-b1\lib\struts.jar;S:\Java\lib\dx3.
0.jar;S:\Java\lib\rootriver.report.jar;S:\Java\lib;S:\Java\lib\struts.jar;"
"-Dweblogic.RootDirectory=C:\bea\wlserver6.0sp1"
"-Dweblogic.Domain=mydomain" "-Dweblogic.Name=myserver" "-Dbea.home=c:\bea"
"-Djava.security.policy==c:\bea\wlserver6.0sp1\lib\weblogic.policy"
"-Dweblogic.management.password=password" weblogic.Server -hotspot
Starting WebLogic Server ....
<Jun 27, 2001 4:00:39 PM EDT> <Notice> <Management> <Loading configuration
file C:\bea\wlserver6.0sp1\config\mydomain\config.xml ...>
log file:
C:\bea\wlserver6.0sp1\config\mydomain\config\config\mydomain\logs\weblogic.l
og
<Jun 27, 2001 4:00:50 PM EDT> <Info> <Logging> <Only log messages of
severity "Error" or worse will be displayed in this window. This can be
changed at Admin Console> mydomain> Servers> myserver> Logging> General>
Stdout severity threshold>
<Jun 27, 2001 4:02:32 PM EDT> <Notice> <WebLogicServer> <WebLogic Server
started>
<Jun 27, 2001 4:02:32 PM EDT> <Notice> <WebLogicServer> <ListenThread
listening on port 7001>
<Jun 27, 2001 4:02:32 PM EDT> <Error> <Performance Pack> <Unable to load
performance pack, using Java I/O.
java.lang.UnsatisfiedLinkError: no wlntio in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1312)
at java.lang.Runtime.loadLibrary0(Runtime.java:749)
at java.lang.System.loadLibrary(System.java:820)
at weblogic.socket.NTSocketMuxer.<init>(NTSocketMuxer.java:173)
at java.lang.Class.newInstance0(Native Method)
at java.lang.Class.newInstance(Class.java:237)
at weblogic.socket.SocketMuxer.makeTheMuxer(SocketMuxer.java:126)
at weblogic.socket.SocketMuxer.getMuxer(SocketMuxer.java:83)
at weblogic.t3.srvr.ListenThread.run(ListenThread.java:224)
> -
Unable to load performance pack, using Java I/O instead
I'm writing because we're having some troubles with the performance pack load.
We're getting this error message when the server starts:
<Feb 1, 2005 11:30:26 AM CST> <Error> <Performance Pack> <Unable to load performance pack, using Java I/O instead.
Please ensure that libmuxer library is in /bea/jdk131/jre/bin/../lib/PA_RISC2.0/native_threads:/bea/jdk131/jre/bin/../lib/PA_RISC2.0/server:/bea/jdk131/jre/bin/../lib/PA_RISC2.0:/siven/shlib:/bea/wlserver/lib/hpux11:/bea/wlserver/lib/hpux11/oci816_8:/usr/lib
java.lang.UnsatisfiedLinkError: getBuildTime
We have checked the following things:
1.- The library libmuxer.sl exists in the path: /bea/wlserver/lib/hpux11
2.- The file has the correct privileges so it can be read by the server
3.- We've run an 'nm -o libmuxter.sl |grep getBuildTime' to ensure that the method exists in the library
We have four managed servers running in the same machine and the error message apears only in one of them.
Any idea of what might be happening?
Does any one know on what OS librarys depends libmuxer.sl?
We're running WebLogic Server 6.1 SP6 on HP-UX 11.0That's very odd that the same machine has 4 servers and only 1 sees this
error.
I'm assuming they all have the same environment/user etc. If not,
that's the first thing you should check.
I wonder if this is a resource issue in the OS. If you start a 5th
server, does it also see this error? Is it the 4th server you start
that hits this error, or just one of the 4 you run?
-- Rob
Miguel Chavez wrote:
I'm writing because we're having some troubles with the performance pack load.
We're getting this error message when the server starts:
<Feb 1, 2005 11:30:26 AM CST> <Error> <Performance Pack> <Unable to load performance pack, using Java I/O instead.
Please ensure that libmuxer library is in /bea/jdk131/jre/bin/../lib/PA_RISC2.0/native_threads:/bea/jdk131/jre/bin/../lib/PA_RISC2.0/server:/bea/jdk131/jre/bin/../lib/PA_RISC2.0:/siven/shlib:/bea/wlserver/lib/hpux11:/bea/wlserver/lib/hpux11/oci816_8:/usr/lib
java.lang.UnsatisfiedLinkError: getBuildTime
We have checked the following things:
1.- The library libmuxer.sl exists in the path: /bea/wlserver/lib/hpux11
2.- The file has the correct privileges so it can be read by the server
3.- We've run an 'nm -o libmuxter.sl |grep getBuildTime' to ensure that the method exists in the library
We have four managed servers running in the same machine and the error message apears only in one of them.
Any idea of what might be happening?
Does any one know on what OS librarys depends libmuxer.sl?
We're running WebLogic Server 6.1 SP6 on HP-UX 11.0 -
Unable to load performance pack, using Java I/O on WL60, sp2
Dear friends,
I am seeking help from you. When we start WL60 SP2 on Sun Soloris 5.6, we got
the following exception:
<Jul 31, 2001 5:39:53 PM EDT> <Error> <Performance Pack> <Unable to load performance
pack, using Java I/O.
java.lang.UnsatisfiedLinkError: getFdLimit
at weblogic.socket.PosixSocketMuxer.getFdLimit(Native Method)
at weblogic.socket.PosixSocketMuxer.<init>(PosixSocketMuxer.java:104)
at java.lang.Class.newInstance0(Native Method)
at java.lang.Class.newInstance(Class.java:237)
at weblogic.socket.SocketMuxer.makeTheMuxer(SocketMuxer.java:128)
at weblogic.socket.SocketMuxer.getMuxer(SocketMuxer.java:83)
at weblogic.t3.srvr.ListenThread.run(ListenThread.java:224)
>
Hoever, the server itself started, and our applications runs ok
(at least so far). But this exception appears every time on some user accounts.
I was wondering what causes this exception. Some user accounts in the same machine
don't have this problem.
I also wondering if it will cause performance problem when the traffic is high.
We already applied the patches.
Any hits and suggestions are welcome.
Thanks in advance.
-JuDear Deyan,
Thanks for your help. We do have $WEBLOGIC_HOME/lib/solaris in LD_LIBRARY_PATH,
which is set when running ". setEnv.sh" before startWebLogic.sh.
We failed on one patch: 105210-27, for some reason.
The strange thing is: in the same machine, all WL60 instances running under user
accounts (under /users/developers/) have no such error. But it happens under some
account, like accounts under /export/home/, etc. /user/developers is mounted on
another physical machine.
-Ju
"Deyan D. Bektchiev" <[email protected]> wrote:
>
You should have the $WEBLOGIC_HOME/lib/solaris directory in your LD_LIBRARY_PATH
so that
the server can load the performance pack (which is a shared library called
libmuxer.so).
If it is present then do a ldd libmuzer.so and you will see if any libraries
that it
depends on are missing.
Also make sure you have all of the requered patches for 2.6 installed.
--dejan
Ju Rao wrote:
Dear friends,
I am seeking help from you. When we start WL60 SP2 on Sun Soloris 5.6,we got
the following exception:
<Jul 31, 2001 5:39:53 PM EDT> <Error> <Performance Pack> <Unable toload performance
pack, using Java I/O.
java.lang.UnsatisfiedLinkError: getFdLimit
at weblogic.socket.PosixSocketMuxer.getFdLimit(Native Method)
at weblogic.socket.PosixSocketMuxer.<init>(PosixSocketMuxer.java:104)
at java.lang.Class.newInstance0(Native Method)
at java.lang.Class.newInstance(Class.java:237)
at weblogic.socket.SocketMuxer.makeTheMuxer(SocketMuxer.java:128)
at weblogic.socket.SocketMuxer.getMuxer(SocketMuxer.java:83)
at weblogic.t3.srvr.ListenThread.run(ListenThread.java:224)
>
Hoever, the server itself started, and our applications runs ok
(at least so far). But this exception appears every time on some useraccounts.
I was wondering what causes this exception. Some user accounts in thesame machine
don't have this problem.
I also wondering if it will cause performance problem when the trafficis high.
We already applied the patches.
Any hits and suggestions are welcome.
Thanks in advance.
-JuContent-Description: Card for Deyan D. Bektchiev
begin:vcard
n:Bektchiev;Deyan
tel;home:1-650-363-6055
tel;work:1-650-289-1046
x-mozilla-html:TRUE
url:http://www.appl.net/
org:Application Networks
adr:;;444 Ramona St;Palo Alto;CA;94301;USA
version:2.1
email;internet:[email protected]
fn:Deyan D. Bektchiev
end:vcard -
Classify and cluster documents with algorithm in java
Hello everybody,
I want to classify and cluster, let's say, 100 documents which are on the Intranet.
I was thinking of including an algorithm in java who can do this.
But i have no clue where to start of where to begin.
Please give me some advice or maybe an example ;),
Greetings,
Thijs Leusink
[email protected]I was thinking of including an algorithm in java who
can do this.
But i have no clue where to start of where to begin.Two steps:
1. Find an algorithm that can do what you want.
2. Write it in Java.
Start with the first step: if you haven't done that yet, I don't think we can help you here. Possibly you could use Google to find an algorithm.
Then go on to the next step: if you don't even know how to begin writing a Java program then there is a collection of introductory tutorials here:
http://java.sun.com/docs/books/tutorial/
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