Re: TOMCAT memory usage : how to manage and benchmark ?

2002-10-29 Thread jean-frederic clere
Pier Fumagalli wrote: On 28/10/02 22:40, Bojan Smojver [EMAIL PROTECTED] wrote: On Tue, 2002-10-29 at 00:31, Pier Fumagalli wrote: Those are _not_ processes, they are threads... Use a decent operating system that supports them nicely (not Linux) and you'll see the difference (how many times

Re: TOMCAT memory usage : how to manage and benchmark ?

2002-10-29 Thread Bojan Smojver
On Tue, 2002-10-29 at 20:15, jean-frederic clere wrote: The Linux threads implementation is _bad_ but that does not mean that the whole thing bad. I was just teasing. Anyway, have a look at this: http://marc.theaimsgroup.com/?l=linux-kernelm=103269598000900w=2 and this:

Re: TOMCAT memory usage : how to manage and benchmark ?

2002-10-29 Thread Pier Fumagalli
jean-frederic clere [EMAIL PROTECTED] wrote: The Linux threads implementation is _bad_ but that does not mean that the whole thing bad. That's why I said works for you? Good... For our setup we _need_ threads... For the Fun. The kernel threads appair also in ps but I have not (yet) tried to

Re: TOMCAT memory usage : how to manage and benchmark ?

2002-10-29 Thread jean-frederic clere
Pier Fumagalli wrote: jean-frederic clere [EMAIL PROTECTED] wrote: The Linux threads implementation is _bad_ but that does not mean that the whole thing bad. That's why I said works for you? Good... For our setup we _need_ threads... So the problem is a little different: you need a JVM

Re: TOMCAT memory usage : how to manage and benchmark ?

2002-10-28 Thread Pier Fumagalli
[EMAIL PROTECTED] [EMAIL PROTECTED] wrote: So, My first question is : why tomcat use all the memory while there is no users connected (or just one) ? The JVM allocates chunks of memory (see the -Xmx and -Xms flags by invoking java -X) and manages them... So, one user, 100 users, same

Re: TOMCAT memory usage : how to manage and benchmark ?

2002-10-28 Thread Henri Gomez
Pier Fumagalli wrote: [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: So, My first question is : why tomcat use all the memory while there is no users connected (or just one) ? You should first see if your application is not eating memory. My second question is : how much memory is needed if I

Re: TOMCAT memory usage : how to manage and benchmark ?

2002-10-28 Thread Henri Gomez
On Linux threads are +/- process and are really cheap to create, so it's should be a problem. Read, it shouldn't be a problem -- To unsubscribe, e-mail: mailto:tomcat-dev-unsubscribe;jakarta.apache.org For additional commands, e-mail: mailto:tomcat-dev-help;jakarta.apache.org

Re: TOMCAT memory usage : how to manage and benchmark ?

2002-10-28 Thread Pier Fumagalli
Henri Gomez [EMAIL PROTECTED] wrote: On Linux threads are +/- process and are really cheap to create, so it's should be a problem. Read, it shouldn't be a problem It is a problem because every time someone does a PS goes _nuts_ about the number of JVM processes... While at the end they

Re: TOMCAT memory usage : how to manage and benchmark ?

2002-10-28 Thread Henri Gomez
Pier Fumagalli wrote: Henri Gomez [EMAIL PROTECTED] wrote: On Linux threads are +/- process and are really cheap to create, so it's should be a problem. Read, it shouldn't be a problem It is a problem because every time someone does a PS goes _nuts_ about the number of JVM

RE: TOMCAT memory usage : how to manage and benchmark ?

2002-10-28 Thread Jason Corley
Pier (MacOS/X rocks!) -- Finally something I can agree with Pier on. :-) Jason -- To unsubscribe, e-mail: mailto:tomcat-dev-unsubscribe;jakarta.apache.org For additional commands, e-mail: mailto:tomcat-dev-help;jakarta.apache.org

Re: Réf. : Re: TOMCAT memory usage : how to manage and benchmark ?

2002-10-28 Thread Henri Gomez
[EMAIL PROTECTED] wrote: G... Always the same problem! I tried in the tomcat.conf script : JAVACMD=$JAVA_HOME/bin/java -Xms128m -Xmx256m or in the dtomcat4 : JAVA_OPTS= -server -Xms128m -Xmx256m -- The memory used by my tomcat reach 300 MO or more with 0 user connected... Why ? It

[OT]Re: TOMCAT memory usage : how to manage and benchmark ?

2002-10-28 Thread micael
What operating system do you prefer, Pier? At 01:31 PM 10/28/2002 +, you wrote: [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: So, My first question is : why tomcat use all the memory while there is no users connected (or just one) ? The JVM allocates chunks of memory (see the -Xmx and

Re: [OT]Re: TOMCAT memory usage : how to manage and benchmark ?

2002-10-28 Thread Pier Fumagalli
micael [EMAIL PROTECTED] wrote: What operating system do you prefer, Pier? We use Solaris both for Intel and Sun platforms... First reason being is that we _know_ how that OS works, it's much more tuneable on live systems, and much easier to configure when you know what you're doing...

Re: TOMCAT memory usage : how to manage and benchmark ?

2002-10-28 Thread Bojan Smojver
On Tue, 2002-10-29 at 00:31, Pier Fumagalli wrote: Those are _not_ processes, they are threads... Use a decent operating system that supports them nicely (not Linux) and you'll see the difference (how many times do I have to repeat this?)... Linux sucks :-( Ha, ha... Keep dreaming Pier ;-)

Re: TOMCAT memory usage : how to manage and benchmark ?

2002-10-28 Thread Bojan Smojver
On Tue, 2002-10-29 at 00:10, [EMAIL PROTECTED] wrote: Hello, I have tomcat 4.1.10 on a red hat Linux server 7.3 with the j2sdk141, When I start the tomcat4 service, all is OK and the tomcat server run. BUT, when I look the memory usage (with TOP utility), I have this result : 11:31am

Re: TOMCAT memory usage : how to manage and benchmark ?

2002-10-28 Thread Pier Fumagalli
On 28/10/02 22:40, Bojan Smojver [EMAIL PROTECTED] wrote: On Tue, 2002-10-29 at 00:31, Pier Fumagalli wrote: Those are _not_ processes, they are threads... Use a decent operating system that supports them nicely (not Linux) and you'll see the difference (how many times do I have to repeat

Re: TOMCAT memory usage : how to manage and benchmark ?

2002-10-28 Thread Denis Benoit
On Mon, 28 Oct 2002 [EMAIL PROTECTED] wrote: JAVA_OPTS= -server -Xms128m -Xmx256m -- The memory used by my tomcat reach 300 MO or more with 0 user connected... The memory usage of the process is not the total of the memory of all the threads. Take ONE thread memory usage (in top for