Re: Database Server Tuning

>>>>> "JA" == John Allgood <john(at)turbocorp(dot)com> writes:

JA> I am planning on separating the OS, Data, WAL on to separate drives
JA> which will be mirrored. I am looking for input on setting kernel parameters,
JA> and Postgres server runtime parameters and other settings relating to

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.

--
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Vivek Khera, Ph.D. Khera Communications, Inc.
Internet: khera(at)kciLink(dot)com Rockville, MD +1-301-869-4449 x806
AIM: vivekkhera Y!: vivek_khera http://www.khera.org/~vivek/