Re: LinuxQuestions.org - Community Bulletin

[chuck gelm <chuck@gelm.net>]

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 <application>

so that it does not 'hog' the system so much.

Run 'top' to watch how much memory your application uses.

HTH, Chuck