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Old 10-09-2004, 04:02 PM   #1
linux7
LQ Newbie
 
Registered: Oct 2004
Posts: 3

Rep: Reputation: 0
Question kernel memory leak?


hello
i am running linux 2.6.5 with a few patches (e.g. lids) ~ 70 days uptime.
a few days ago i noticed system slowdown and high memory usage. i came down to runlevel 1 and noticed, that almost all my memory is consumed. a few logs:
ps aux
Code:
USER       PID %CPU %MEM   VSZ  RSS TTY      STAT START   TIME COMMAND
root         1  0.0  0.1  1368  376 ?        S    Jul26   0:20 init [S]  
root         2  0.0  0.0     0    0 ?        SWN  Jul26   0:00 [ksoftirqd/0]
root         3  0.0  0.0     0    0 ?        SW<  Jul26   0:41 [events/0]
root         4  0.0  0.0     0    0 ?        SW<  Jul26   0:27 [kblockd/0]
root         5  0.0  0.0     0    0 ?        SW   Jul26   0:00 [khubd]
root         9  0.0  0.0     0    0 ?        SW<  Jul26   0:00 [aio/0]
root         8  0.0  0.0     0    0 ?        SW   Jul26  36:27 [kswapd0]
root        10  0.0  0.0     0    0 ?        SW   Jul26   0:00 [jfsIO]
root        11  0.0  0.0     0    0 ?        SW   Jul26   0:00 [jfsCommit]
root        12  0.0  0.0     0    0 ?        SW   Jul26   0:00 [jfsSync]
root        13  0.0  0.0     0    0 ?        SW<  Jul26   0:00 [xfslogd/0]
root        14  0.0  0.0     0    0 ?        SW<  Jul26   0:00 [xfsdatad/0]
root        15  0.0  0.0     0    0 ?        SW   Jul26   0:02 [xfsbufd]
root        16  0.0  0.0     0    0 ?        SW   Jul26   0:00 [kseriod]
root        17  0.0  0.0     0    0 ?        SW   Jul26   1:40 [kjournald]
root       127  0.0  0.0     0    0 ?        SW   Jul26   0:00 [kjournald]
root       128  0.0  0.0     0    0 ?        SW   Jul26   3:28 [kjournald]
root      1007  0.0  0.0     0    0 ?        SW   Jul26   0:03 [kjournald]
user001   1766  0.0  0.0     0    0 ?        ZN   Sep11   0:00 [wine-kthread] <defunct>
root     25385  0.0  0.0     0    0 ?        SW   Oct02   0:00 [pdflush]
root     13579  0.0  0.0     0    0 ?        SW   Oct08   0:00 [pdflush]
root     23506  0.0  0.1  1272  384 ?        S    14:55   0:00 minilogd
root     23633  0.0  0.1  1368  412 tty2     S    14:55   0:00 init [S]  
root     23634  0.0  0.3  1948 1164 tty2     S    14:55   0:00 bash
root     23881  0.0  0.2  2140  720 tty2     R    14:58   0:00 ps aux
free
Code:
             total       used       free     shared    buffers     cached
Mem:        352720     345476       7244          0       4872      21560
-/+ buffers/cache:     319044      33676
Swap:       262128        460     261668
ipcs
Code:
------ Shared Memory Segments --------
key        shmid      owner      perms      bytes      nattch     status      
0x50494f4e 401276929  user001   666        2016       0                       

------ Semaphore Arrays --------
key        semid      owner      perms      nsems     

------ Message Queues --------
key        msqid      owner      perms      used-bytes   messages
vmstat
Code:
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
 r  b   swpd   free   buff  cache   si   so    bi    bo   in    cs us sy id wa
 0  0    368   7324   4972  21608    2    1     3     1    5     6 88  6  6  0
lsmod
Code:
Module                  Size  Used by
dm_mod                 36032  2
as you can see free memory is about 32M, including buffers and cache. i can hardly run more than one application at a time (and with swap turned on) - previously i run plenty of apps (evolution, wine, opera, firefox etc.)
the memory IS NOT used for cache. it's just 'gone'.
more - wine-kthread's parent is 1 (init), here's the line from ps -efw
Code:
1 Z user001   1766     1  0  99  19 -     0 exit   Sep11 ?        00:00:00 [wine-kthread] <defunct>
and the process is in zombie state...
is there any possibility (except reboot) to trace down the problem and get leaked memory back? system is still on, so i can give additional info...
 
Old 10-16-2004, 11:48 AM   #2
linux7
LQ Newbie
 
Registered: Oct 2004
Posts: 3

Original Poster
Rep: Reputation: 0
Re: kernel memory leak?

Quote:
Originally posted by linux7
system is still on
from now it is not true anymore
i didn't find solution, so i've had to reboot
 
  


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