Memory Leak

FredrikN · 09-17-2002, 04:19 AM

Hi

I have a big problem.

My serve is leaking a lot of memory

I have 384MB of RAM

The server consumes this memory in 24H and then i crashes.

Sure , I can kill a process and it will free some memory , but the new released memory will also be used and then it crashes again.

Seems strange to me, does anyone know how I can fix this problem ??

I do not want to use cron to restart the server every night :-(

FredrikN · 09-17-2002, 04:20 AM

The ps or top doesn't show me anything strange either

Is there a way to find out where the memory is used ??

384MB in 1 day ??

unSpawn · 09-17-2002, 08:36 AM

For a global view you can use periodically dumping output from free, (at)sar/sa. Finer grained stats you could gain from lsof, (a)top, or ps (like /bin/ps ax -eo vsz,pid,args) but then you would have to transmogrify the data a bit. I like atop, because it can also show VM in/decreases per app.

Any finer grained and you're at the level where you would zoom in on suspects, test different configs, assess add-ons (like httpd cgi's) or use a preloaded lib or binary recompiled with a debugging lib like dmalloc.

FredrikN · 09-17-2002, 12:20 PM

Ok, thanks 4 your tips :-)

mikek147 · 09-17-2002, 03:16 PM

You might also check on whether 1. swap was configured on installation, #2 whether you have a swap line in /etc/fstab, 3. is the swap actually in use. As far as item item 3 is concerned, when I installed my system, although a swap space was configured, swapon was never called on boot to turn it on, so I was running without a swap. Hope this helps. -mk