Hi All,
I am a load test engineer and pretty new to tomcat. I would really
appreciate if someone can help me with couple of my basic questions:
1) have seen some of my colleagues using kill -3 to take the thread dumps?
So, do i need to supply process id with this command. Like: kill -3 . Then do
uuencode but still get in the body.
2) We used jstack before but it was not that useful. So, we returned to
using kill -3. Will following work?
nexec kill -3
Do we need this full command even if i am logged in the server?
Thaks for your help
Parki
Caldarale, Charles R wrote:
>
>&
OK. Actually i also use putty. So, may be i just need kill -3 pid. I can get
pid using ps -ef | grep tomcat.
One more question:
What do i need to do restart tomcat? Someone told me is enough?
Thanks
Caldarale, Charles R wrote:
>
>> From: keeplearning [mailto:[EMAIL PROTECTED]
&
Hi All,
I am relatively new to Tomcat. I was looking at thread dumps which we took
from Tomcat and I see lots of thread names. Now, I am not sure which one is
important to look at.
Some of threads I see are as follows:
"http-8080-Processor15"
"TP-Processor1"
WorkerThread(receive_transaction_c
Hi All,
Could anyone tell me which is a good thread analyzer tool for Sun JVMs? We
have Apache and Tomcat in our infrastructure. I could see that for IBM JVMs,
there are tools provided by IBM for thread and heap dump analysis.
--
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Hi All,
I have a quick question about getting thread dumps. I have been told that if
I do kill -3 , it will send the thread dumps to catalina.out.
Let say if I run test 1 and take 3 dumps. Then if I run test 2 and 3 more.
Do these get appended to first thread dumps I took?
If yes, Let say if I
reasonably clean thread dump.
>
> For example:
>
> Terminal A:
> prompt$ tail -f /usr/local/tomcat/logs/catalina.out | tee
> /tmp/tomcat-threads.tmpA
>
> Terminal B:
> prompt$ kill -QUIT 12345
>
>
> On Wed, Sep 2, 2009 at 2:56 PM, keeplearning wrote:
>>
&g
How do I know how many threads are being used during a test run (both tomcat
and apache)? We used to have some tools for that but not currently in the
new environment.
Thanks in advance
--
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Sent from t
I am running a load test with 2 web (apache) and 2 appservers (tomcat). I am
noticing that after 250 users, I start seeing very high CPU usage and very
high load. Below is the o/p from top command. I also saw this message in
catalina.out: "SEVERE: All threads (250) are currently busy, waiting.
Inc
tomcat workers(per server).
>
> But there are 500 apache workers (250 * 2). So in the worst case - you
> need tomcat to handle 500 connections.
>
> -Tim
>
> keeplearning wrote:
>> I am running a load test with 2 web (apache) and 2 appservers (tomcat). I
>> am
&
But if tomcat is saying All threads (250) are currently busy, waiting. -
> that means it is only configured to handle 250 workers.
>
> -Tim
>
> keeplearning wrote:
>> Where do I see # of apache workers and tomcat workers in the config file?
>> With what you said,
I am running a test and after 500 users or so, I start to see performance
degradation. I have Apache as webserver and Tomcat to serve dynamic content.
I took the thread dumps and I see most threads are waiting on "Object.Wait"
as follows:
at java.lang.Object.wait(Native Method)
at java.lang.Obj
I am running a test with Apache webserver. When I have 500 users running, I
start seeing following messages in error_log. I looked at top command and I
have 2G memory available, CPU is around 50% and doesn't have any swapping
going on. Here are the parameters in httpd.conf (earlier it was even low
Oh sorry...completely skipped my mind.
Caldarale, Charles R wrote:
>
>> From: keeplearning [mailto:p_sodh...@yahoo.com]
>> Subject: errors in apache error_log
>>
>> I am running a test with Apache webserver.
>
> This is the Tomcat mailing list, no
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