Another round of pg win32 speedups

This is actually a bit old news, but I've been out of town.

About a week ago, we got a patch from Qingqing Zhou (and changed around in several different steps my me and Tom Lane) applied to PostgreSQL 8.1 that changes the way win32 polls for the "fake signals" used to emulate Unix behaviour and eliminates a kernel call in a very active codepath. The end result of this: Very nice speedups on Windows. In some isolated test-cases up to 40%25!!! In general cases, it's going to be much less than that of course, but it is still a significan speedup. It appears especially efficient in scenarios with lots of concurrent access, bringing win32 performance much closer to what we have on Linux.

Way to go Qingqing, and thanks also to Merlin and Andrew for quick testing work.

My own update from the Japan trip coming up in a bit...


Add comment

New comments can no longer be posted on this entry.

Conferences

I speak at and organize conferences around Open Source in general and PostgreSQL in particular.

Upcoming

PGConf.EU 2025
Oct 21-24, 2025
Riga, Latvia

Past

PGConf.dev 2025
May 13-16, 2025
Montreal, Canada
Nordic PGDay 2025
Mar 18, 2025
Copenhagen, Denmark
SCaLE 2024
Mar 6-9, 2025
Pasadena, USA
FOSDEM PGDay 2025
Jan 30-Feb 2, 2025
Brussels, Belgium
PGConf.EU 2024
Oct 22-25, 2024
Athens, Greece
More past conferences