Re: extreme system load [kswapd]
From: Karol Šebesta
Date: Thu Apr 12 2012 - 07:36:43 EST
# cat /proc/sys/vm/zone_reclaim_mode
0
#
The value is set to zero, and we have these problems.... interesting...
Regards,
Karol Sebesta
2012/4/12 Karol Šebesta <sebesta.karol@xxxxxxxxx>:
> Hello Rik,
>
> Thank you for answer, but now we are facing to another interesting
> issue on our redhat 5.6 server.
>
> It seems that linux dropped almost all disk cache and now it trying to
> gain disk cache space by swapping. That is the reason why kswapd
> process loads the system.
>
> ### as you can see almost all RAM is free ( that is bad ) - some time
> ago there was all RAM cached in disk cache
>
> [root@dusu0216 ~]# free -m
> total used free shared buffers cached
> Mem: 128861 29814 99047 0 108 20186
> -/+ buffers/cache: 9519 119342
> Swap: 81919 16614 65305
> [root@dusu0216 ~]#
>
>
> Do you think that can be a problem with NUMA nodes or what can be the
> reason that Linux itself dropped almost all disk cache?
>
> Thank you.
>
> Regards,
>
> Karol Sebesta
--
S pozdravom
Karol Šebesta
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