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SubjectRe: extreme system load [kswapd]
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.


Karol Sebesta

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