Gary DeSorbo <[EMAIL PROTECTED]> writes:
> Postgres is configured as follows:

> sort_mem = 128672
> shared_buffers = 60800
> fsync = false

Yipes.  Back off that sort_mem setting --- that's 128M *per sort*,
which will undoubtedly run you out of memory (or at least into serious
swapping) as soon as several processes try to do concurrent sorts.
Something in the vicinity of 5 or 10 meg is probably more reasonable.

If you have multiple drives consider relocating the WAL (pg_xlog/)
onto a different drive, preferably one that normally doesn't touch
anything but WAL.

                        regards, tom lane

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