Re: [PERFORM] Help with tuning this query (with explain analyze finally)

> -----Original Message-----
> From: Tom Lane [mailto:tgl(at)sss(dot)pgh(dot)pa(dot)us]
> Sent: Wednesday, March 02, 2005 4:30 PM
> To: Ken Egervari
> Cc: pgsql-performance(at)postgresql(dot)org;
> pgsql-hackers-win32(at)postgresql(dot)org
> Subject: Re: [PERFORM] Help with tuning this query (with
> explain analyze
> finally)
>
> [...]
> Well, what it suggests is that gettimeofday() is only
> returning a result good to the nearest millisecond. (Win32
> hackers, does that sound right?)

No. There's no such thing as gettimeofday() in Win32. So it
must be making some other call, or perhaps an emulation.

> [...]
> Most modern machines seem to have clocks that can count elapsed
> time down to near the microsecond level. Anyone know if it's
> possible to get such numbers out of Windows, or are we stuck with
> milliseconds?

QueryPerformanceCounter() is your friend.

http://lists.boost.org/MailArchives/boost/msg45626.php

__
David B. Held
Software Engineer/Array Services Group
200 14th Ave. East, Sartell, MN 56377
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