Re: kernel error question: application bug (perl)

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it seems you're out of swap and the kernel start killing jobs indiscriminately.

add swap or better yet memory?

On 11/16/06, [email protected] <[email protected]> wrote:
Hi,

Our server has been at times very slow lately and unresponsive and needed
to be restarted several times. I found the following error in the logs
about perl:

Nov 15 21:02:49 kernel: Mem-info:
Nov 15 21:02:49 kernel: Zone:DMA freepages:  1055 min:  1056 low:  1088
high:  1120
Nov 15 21:02:49 kernel: Zone:Normal freepages:   765 min:   766 low:  4031
high:  5791
Nov 15 21:02:49 kernel: Zone:HighMem freepages:   264 min:   255 low:
510 high:   765
Nov 15 21:02:49 kernel: Free pages:        2084 (   264 HighMem)
Nov 15 21:02:49 kernel: ( Active: 247285/3347, inactive_laundry: 0,
inactive_clean: 0, free: 2084 )
Nov 15 21:02:49 kernel:   aa:2127 ac:20 id:0 il:0 ic:0 fr:1055
Nov 15 21:02:49 kernel:   aa:212147 ac:2140 id:3347 il:0 ic:0 fr:765
Nov 15 21:02:49 kernel:   aa:30593 ac:258 id:0 il:0 ic:0 fr:264
Nov 15 21:02:49 kernel: 1*4kB 1*8kB 1*16kB 1*32kB 1*64kB 0*128kB 0*256kB
0*512kB 0*1024kB 0*2048kB 1*4096kB = 4220kB)
Nov 15 21:02:49 kernel: 3*4kB 1*8kB 2*16kB 0*32kB 1*64kB 1*128kB 1*256kB
1*512kB 0*1024kB 1*2048kB 0*4096kB = 3060kB)
Nov 15 21:02:49 kernel: 0*4kB 6*8kB 1*16kB 1*32kB 1*64kB 3*128kB 0*256kB
1*512kB 0*1024kB 0*2048kB 0*4096kB = 1056kB)
Nov 15 21:02:49 kernel: Swap cache: add 594668, delete 591932, find
209410/234040, race 0+108
Nov 15 21:02:52 kernel: 1492 pages of slabcache
Nov 15 21:02:55 kernel: 228 pages of kernel stacks
Nov 15 21:02:57 kernel: 0 lowmem pagetables, 1117 highmem pagetables
Nov 15 21:02:58 kernel: Free swap:            0kB
Nov 15 21:02:59 kernel: 262138 pages of RAM
Nov 15 21:02:59 kernel: 32762 pages of HIGHMEM
Nov 15 21:03:00 kernel: 4485 reserved pages
Nov 15 21:03:00 kernel: 7236 pages shared
Nov 15 21:03:01 kernel: 2736 pages swap cached
Nov 15 21:03:01 kernel: Out of Memory: Killed process 9732 (perl).
Nov 15 21:06:08 kernel: application bug: perl(1292) has SIGCHLD set to
SIG_IGN but calls wait().
Nov 15 21:06:08 kernel: (see the NOTES section of 'man 2 wait').
Workaround activated.

What does this indicate? Can someone help me please.

Thank you.

Olga


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