s == [EMAIL PROTECTED] writes: s> What are you using to create your raid?
Hm. I didn't set this up. I'll have to check. s> You say it is "no doubt disk s> I/O" - does iostat confirm this? A lot of performance issues are related s> to the size of the stripe you chose for the striped portion of the s> array, the actual array configuration, etc. I am assuming you have s> looked at system variables such as autoup and the likes? What tweaks s> have you done? I've mainly been using Glance which shows a lot of queued requests for the disks in question. Here's currently what we have in /etc/system related to ufs: set ncsize = 257024 set autoup = 90 set bufhwm = 15000 set tune_t_fsflushr = 15 set ufs:ufs_HW = 16777216 set ufs:ufs_LW = 8388608 s> Also, are your pg_xlog and data directories separated onto separate s> volumes? Doing so will help immensely. No, they are on the same volume. s> What are you using to measure s> performance? Nothing too scientific other than the fact that since we have moved the DB, we consistenly see a large number of postmater processes (close to 100) where before we did not. -- Brandon ---------------------------(end of broadcast)--------------------------- TIP 7: don't forget to increase your free space map settings
