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
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, not the one for httpd.
-Chuck
THIS COMMUNICATION
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
(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
noticing that after 250 users, I start seeing very high CPU
) 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, shouldn't 2 tomcat servers handle 500 connections
(250
*2)?
Thanks a lot
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.
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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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 process id, 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,
Sorry. But I didn't understand how using 2 terminals would help me with the
questions I posted.
Jim Cox-2 wrote:
FWIW, I usually do a tail/tee on catalina.out in a term, then do the
kill -QUIT tomcat PID from another term, then kill the tail/tee
combo which leaves me with a reasonably
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
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 process
: keeplearning [mailto:[EMAIL PROTECTED]
Subject: Thread Dumps/ Emailing Results...
So, do i need to supply process id with this command. Like:
kill -3 process id.
That's one way to do it. My preference is to use the jstack tool from the
JDK, assuming you're running a 1.5 or 1.6 Sun JVM
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 service tomcat
restart is enough?
Thanks
Caldarale, Charles R wrote:
From: keeplearning [mailto:[EMAIL
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