Hi, Well we made a workaround for this by setting up multiple instances of tomcat.
Thanx for the info, it was helpful. -reynir > -----Original Message----- > From: John Turner [mailto:[EMAIL PROTECTED] > Sent: 25. júlí 2003 14:15 > To: Tomcat Users List > Subject: Re: Memory problems > > > > Our setups are different, my point was that my setup is capable of > addressing more RAM than you have (fewer Tomcat but more RAM), which > leads me to believe your problems are OS limit related. > > I wouldn't setup separate Tomcat instances unless you > determined there > was a need for it. > > For my Tomcat user, here are the limits: > > sh-2.05$ ulimit -a > core file size (blocks) 0 > data seg size (kbytes) unlimited > file size (blocks) unlimited > max locked memory (kbytes) unlimited > max memory size (kbytes) unlimited > open files 1024 > pipe size (512 bytes) 8 > stack size (kbytes) 8192 > cpu time (seconds) unlimited > max user processes 16384 > virtual memory (kbytes) unlimited > > That's RH 7.2, dual processor, 4 GB RAM. > > John > > Reynir Hübner wrote: > > > Hi John, > > Thanx for replying. > > > > Yes I was looking for such a limit somewhere, but I could > not find it. > > I thought max number of processes in linux redhat (7.2) was > 1024, (I am only taking up about 250 processes in all). > > > > You say you have 20 instances of tomcat, I have 36 hosts in one > > tomcat, so that's pretty different setup. Should I try > setting up and run separate tomcat instances ? > > > > I used the rpm setup, and I have tomcat config files in one > directory > > and startup scripts in another... Does anyone know of good > directions (websites) on how to do this on linux (I would > know how to do it in windows). > > > > Thanx > > -reynir > > > > > > > > > > > > > >>-----Original Message----- > >>From: John Turner [mailto:[EMAIL PROTECTED] > >>Sent: 25. júlí 2003 13:47 > >>To: Tomcat Users List > >>Subject: Re: Memory problems > >> > >> > >> > >>More likely you are hitting an OS limit, such as number of > processes, > >>number of open files, number of connections, etc. > >> > >>I have 20 instances of Tomcat running on 4 GB of RAM, and > about 800MB > >>stays free. > >> > >>John > >> > >>Reynir Hübner wrote: > >> > >> > >>>Hi, > >>>I have a server that I am trying to deploy 36 webapplications to. > >>>The server is running redhat linux, with 2.5 gig ram and 4 > >> > >>XEON CPUs. > >> > >>>On start up it runs about 30 applications and at that time tomcat > >>>failes, with java.lang.OutOfMemoryException. > >>>The top function shows many (192) java processes taking > >> > >>about 500 mb of memory, but I have -Xmx1500m and -Xms1g in > >>JAVA_OPTS, so obviously the server is not out of memory. > >> > >>>I don't know what is happening, as I have several servers > >> > >>running similar amount of webapps on windows, with out problems. > >> > >>>Other things that run in this server are postgresql and apache (and > >>>really nothing else), so nothing is taking up the rest of > >> > >>the memory. > >> > >>>We even tried to write a small java program that takes up > >> > >>memory in a > >> > >>>loop, that worked fine, and could take up to 1500mb and > >> > >>then run out of memory. > >> > >>>Am I looking at some kind of a limitation on tomcat (no more than > >>>specific amount of applications) or java (no more threads > than some > >>>specific amount) ? > >>> > >>>Please reply, > >>>-reynir > >>> > >>> > >> > >>------------------------------------------------------------ > --------- > >> > >>>To unsubscribe, e-mail: [EMAIL PROTECTED] > >>>For additional commands, e-mail: > [EMAIL PROTECTED] > >>> > >> > >> > >> > >>------------------------------------------------------------ > --------- > >>To unsubscribe, e-mail: [EMAIL PROTECTED] > >>For additional commands, e-mail: [EMAIL PROTECTED] > >> > >> > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
