Re: extreme system load [kswapd]

[Karol Šebesta]

# 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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/