Re: Compression and on-disk sorting

"Jim C. Nasby" <jnasby@pervasive.com> writes:
> Something else worth mentioning is that sort performance is worse with
> larger work_mem for all cases except the old HEAD, prior to the
> tuplesort.c changes. It looks like whatever was done to fix that will
> need to be adjusted/rethought pending the outcome of using compression.

Please clarify.  What are you comparing here exactly, and what cases did
you test?
        regards, tom lane