"Kevin Grittner" <Kevin.Grittner@xxxxxxxxxxxx> wrote: > Jesper Krogh <jesper@xxxxxxxx> wrote: > >> Sorry if it is obvious.. but what filesystem/OS are you using and >> do you have BBU-writeback on the main data catalog also? > File system is xfs noatime,nobarrier for all data; OS is on ext3. > I *think* the pg_xlog mirrored pair is hanging off the same > BBU-writeback controller as the big RAID, but I'd have to track > down the hardware tech to confirm Another example of why I shouldn't trust my memory. Per the hardware tech: OS: /dev/sda is RAID1 - 2 x 2.5" 15k SAS disk pg_xlog: /dev/sdb is RAID1 - 2 x 2.5" 15k SAS disk These reside on a ServeRAID-MR10k controller with 256MB BB cache. data: /dev/sdc is RAID5 - 30 x 3.5" 15k SAS disk These reside on the DS3200 disk subsystem with 512MB BB cache per controller and redundant drive loops. At least I had the file systems and options right. ;-) -Kevin -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
