>>>>> "JA" == John Allgood <john@turbocorp.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.
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Vivek Khera, Ph.D. Khera Communications, Inc.
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