Busy disk and page fault

2009-03-09 Thread Nicolas Haller
Hi all, I'm asking myself about a problem I have with a Postgresql server on FreeBSD 7.1-RELEASE. 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

Re: Busy disk and page fault

2009-03-09 Thread Wojciech Puchar
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. what page fault? most page faults in FreeBSD doesn't mean

Re: Busy disk and page fault

2009-03-09 Thread Nicolas Haller
On Mon, Mar 09, 2009 at 05:04:16PM +0100, Wojciech Puchar wrote: 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