Vivek, > I did a bunch of testing with different RAID levels on a 14 disk > array. I finally settled on this: RAID5 across 14 disks for the > data, the OS (including syslog directory) and WAL on a RAID1 pair on > the other channel of the same controller (I didn't want to spring for > dual RAID controllers). The biggest bumps in performance came from > increasing the checkpoint_buffers since my DB is heavily written to, > and increasing sort_mem.
With large RAID, have you found that having WAL on a seperate array actually boosts performance? The empirical tests we've seen so far don't seem to support this. -- -Josh Berkus Aglio Database Solutions San Francisco ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
