From mboxrd@z Thu Jan 1 00:00:00 1970 From: chuck gelm Subject: Re: LinuxQuestions.org - Community Bulletin Date: Wed, 03 May 2006 05:35:29 +0000 Message-ID: <44584121.5080904@gelm.net> References: <200605020407.a7286e265899@www.linuxquestions.org> <200605022341.42037.kloro@cox.net> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <200605022341.42037.kloro@cox.net> Sender: linux-admin-owner@vger.kernel.org List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: kloro@cox.net Cc: linux-admin@vger.kernel.org tom arnall wrote: >i am experiencing memory problems trying to run an application that processes >a file of about .5GB. So far my results are: > >(1) set ulimit as follows: > > core file size (blocks, -c) 0 > data seg size (kbytes, -d) unlimited > file size (blocks, -f) unlimited > max locked memory (kbytes, -l) 256000 > max memory size (kbytes, -m) 256000 > open files (-n) 1024 > pipe size (512 bytes, -p) 8 > stack size (kbytes, -s) 8192 > cpu time (seconds, -t) unlimited > max user processes (-u) unlimited > virtual memory (kbytes, -v) 768000 > >This gives me 'out of memory' errors. > >(2) set 'virtual memory' very high and the application hogs memory and brings >the rest of the system to almost a halt. > >Thanks in advance for any help you can give me, > >Tom Arnall >north spit, ca > > Hi, Tom: I don't know anything about 'ulimit', but how much real memory do you have? I'd try adding another 2 Gigabytes of virtual memory. Also, try nice -n 19 so that it does not 'hog' the system so much. Run 'top' to watch how much memory your application uses. HTH, Chuck