Re: heavy swapping, not sure why
От | Florian Weimer |
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Тема | Re: heavy swapping, not sure why |
Дата | |
Msg-id | 82hb4zl77z.fsf@mid.bfk.de обсуждение исходный текст |
Ответ на | Re: heavy swapping, not sure why (Scott Marlowe <scott.marlowe@gmail.com>) |
Ответы |
Re: heavy swapping, not sure why
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Список | pgsql-general |
* Scott Marlowe: > On a machine with lots of memory, I've run into pathological behaviour > with both the RHEL 5 and Ubuntu 10.04 kernels where the kswapd starts > eating up CPU and swap io like mad, while doing essentially nothing. > Setting swappiness to 0 delayed this behaviour but did not stop it. > Given that I'm on a machine with 128G ram, I just put "/sbin/swapoff > -a" in /etc/rc.local and viola, problem solved. Was this NUMA machine? Some older kernels can only migrate pages between nodes through swap. -- Florian Weimer <fweimer@bfk.de> BFK edv-consulting GmbH http://www.bfk.de/ Kriegsstraße 100 tel: +49-721-96201-1 D-76133 Karlsruhe fax: +49-721-96201-99
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