Article View: borland.public.delphi.nativeapi
Article #12152Re: QueryPerformanceFrequency
From: William Meyer
Date: Fri, 22 Nov 2002 16:53
Date: Fri, 22 Nov 2002 16:53
18 lines
1432 bytes
1432 bytes
John Leavey wrote: > On most PCs, the high speed timer is designed so that the lower 32 > bits roll over every hour. > > 2^32 / 3600 = 1193046.47111... On many PCs, the frequency is 3579545 Hz, as I lately found out. For performance measures, though, RDTSC is the better thing to use. -- Bill A society of sheep must in time beget a government of wolves. - Bertrand de Juvenal <url:http://www.borland.com/newsgroups/> Borland newsgroup descriptions <url:http://www.borland.com/newsgroups/netiquette.html> netiquette Posted with XanaNews Version 1.12.3.2
Technical Details
Message-ID:
<3dde611f@newsgroups.borland.com>Path:
arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!sn-xit-02!sn-xit-05!sn-xit-06!sn-xit-08!supernews.com!newsfeed.news2me.com!fu-berlin.de!news.uni-x.net!newsgroups.borland.com!not-for-mailReferences:
<3dddc45c@newsgroups.borland.com> <ha0stuk5f8isgsi777lr94gsumngrtpo3d@4ax.com>Show Full Headers
Complete Article Headers
X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f94dd,64862bd85e1470d9 X-Google-Attributes: gidf94dd,public X-Google-ArrivalTime: 2002-11-22 09:15:39 PST From: "William Meyer" <bill_meyer@earthlink.net> Subject: Re: QueryPerformanceFrequency Newsgroups: borland.public.delphi.nativeapi References: <3dddc45c@newsgroups.borland.com> <ha0stuk5f8isgsi777lr94gsumngrtpo3d@4ax.com> Organization: Meyer User-Agent: XanaNews/1.12.3.2 NNTP-Posting-Host: 209.245.129.243 Message-ID: <3dde611f@newsgroups.borland.com> Date: 22 Nov 2002 08:53:51 -0800 X-Trace: newsgroups.borland.com 1037984031 209.245.129.243 (22 Nov 2002 08:53:51 -0800) Lines: 18 Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!sn-xit-02!sn-xit-05!sn-xit-06!sn-xit-08!supernews.com!newsfeed.news2me.com!fu-berlin.de!news.uni-x.net!newsgroups.borland.com!not-for-mail