Re: [pgsql-hackers-win32] Help with tuning this query (with
Greg Stark <[email protected]>
| Newsgroups | gmane.comp.db.postgresql.performance,gmane.comp.db.postgresql.devel.win32 |
|---|---|
| Organization | The Emacs Conspiracy; member since 1992 |
| Message-ID | <[email protected]> |
John A Meinel <[email protected]> writes: > Then we would only be wrong for 256 gettimeofday calls. I agree it isn't > great, though. And probably better to just abstract (possibly just with > #ifdef) the calls for accurate timing, from the calls that actually need > the real time. What would be really neato would be to use the rtdsc (sp?) or equivalent assembly instruction where available. Most processors provide such a thing and it would give much lower overhead and much more accurate answers. The main problem I see with this would be on multi-processor machines. (QueryPerformanceCounter does work properly on multi-processor machines, right?) -- greg ---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq