On Sat, Nov 3, 2012 at 10:09 AM, Gunnar "Nick" Bluth
<gunnar(dot)bluth(at)pro-open(dot)de> wrote:
> Well, I'm pretty sure that having more work_mem is a good thing (tm)
> normally ;-)
In my experience when doing sorts in isolation, having more work_mem
is a bad thing, unless it enables you to remove a layer of
tape-merging. I always blamed it on the L1/L2 etc. levels of caching.
Cheers,
Jeff