On 6 Září 2011, 10:26, Gerhard Wohlgenannt wrote: > Thanks a lot to everybody for their helpful hints!!! > > I am running all these benchmarks while the VMs are up .. with the > system under something like "typical" loads .. > > The RAID is hardware based. On of my colleagues will check if there is > any hardware problem on the RAID (the disks) today, but nothing no > errors have been reported. > > please find below the results of > iostat -x 2 > vmstat 2 > > hmm, looks like we definitely do have a problem with I/O load?! > btw: dm-19 is the logical volume where the /var (postgresql) is on .. Well, it definitely looks like that. Something is doing a lot of writes on that drive - the drive is 100% utilized, i.e. it's a bottleneck. You need to find out what is writing the data - try iotop or something like that. And it's probably the reason why the bonnie results were so poor. Tomas -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
