search for: queryperformancefrequency

Displaying 5 results from an estimated 5 matches for "queryperformancefrequency".

2006 May 11
9
world of warcraft doesnÄt work (sorry if double post)
if this is a doublepost please sorry bur the first post was blocked by spamfilter because of wrong timesettings on my local computer. i reaplyed to my original post and now im not shure if the mailserver thinks the message is corrupt because of reply to a non existing message. here is the originalmessage (again?) Hi everyone, thirst of all please forgive my bad english :) i have installed wine
2012 Jan 22
1
Timing related application crash
...lties by getting a "divide by 0 error". There are no other console messages (such as WINE FIXMEs) before this. After attaching a debugger (ollydbg) I found the following sequence seems to be the culprit (simplified to Cish code): (start @ 0x0041AF35) CPUID, RDTSC func CPUID, RDTSC func QueryPerformanceFrequency(&Frequency); QueryPerformanceCounter(&PerformanceCount1) CPUID, RDTSC func QueryPerformanceCounter(&PerformanceCount2) CPUID, RDTSC func do some math related to something blah = something * Frequency / (PerformanceCount2 - PerformanceCount1); The key issue being that PerformanceCount2...
2001 Oct 16
7
Performance tests
I did some testing of vorbis codec (Winamp plugin) on a Pentium 166 MMX, and found that the performance is pretty good. I got 3 % cpu utisization if I turned dithering off, and 5 % otherwise. This was with a 138 kbit song. It's pretty long to mp3 performance that was 0 to 1 % on that machine for a 128 kbit song. Also vorbis seems to have a larger working set, because if I play two songs at
2017 Nov 21
2
question about xray tls data initialization
...ires bitfields to be same type to pack them together( all types => uint32_t) FD int => HANDLE, most code logic still valid (-1 as invalid value), r/w API replaced with windows mprotect => VirtualProtect readTSC in xray_x86_64.inc also works for windows replace read tsc from proc with QueryPerformanceFrequency msvc can not compile such code void setupNewBuffer(int (*wall_clock_reader)(clockid_t, struct timespec *)); must use typedef first . xray use clock_gettime as default implementation , which is not friendly for windows .create a fake one based on...
2017 Nov 16
2
question about xray tls data initialization
I'm learning the xray library and try if it can be built on windows, in xray_fdr_logging_impl.h line 152 , comment written as // Using pthread_once(...) to initialize the thread-local data structures but at line 175, 183, code written as thread_local pthread_key_t key; // Ensure that we only actually ever do the pthread initialization once. thread_local bool UNUSED Unused = [] {