Re: Spinlocks, yet again: analysis and proposed patches - Mailing list pgsql-hackers

* Tom Lane (tgl@sss.pgh.pa.us) wrote:
> Stephen Frost <sfrost@snowman.net> writes:
> > * Tom Lane (tgl@sss.pgh.pa.us) wrote:
> >> Er, which (or both) of the two patches did you apply here?
>
> > Applied both, sorry that wasn't clear.
>
> Thanks.  If you've got the time, could you try the two patches
> separately and see what you get?

Sure.

CVS Head:

N, runtime:    1 31s    2 47s    4 86s    8 159s

With just slock-no-cmpb.patch:

N, runtime:    1 32s    2 39s    4 82s    8 167s

With just spin-delay.patch

N, runtime:    1 32s    2 52s    4 94s    8 164s

With both:

N, runtime:    1 32s    2 53s    4 90s    8 169s
Hope that helps,
    Stephen