Busy disk and page fault

Nicolas Haller nicolas at boiteameuh.org
Mon Mar 9 08:50:09 PDT 2009

Hi all,

I'm asking myself about a problem I have with a Postgresql server on

The server is overload, the disk is 100% busy with 250 write operations
per second and a throuput of 6MB/s.
My first idea is because of mass random access/write on the disk. But I also see
the server can make 20k page fault per second.

So, did you think I really have a disk contention or this high number of
page fault can be a problem (and if it can, how to resolve it).


Nicolas Haller

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