diff options
Diffstat (limited to 'indra/llcommon/llfasttimer_class.cpp')
| -rw-r--r-- | indra/llcommon/llfasttimer_class.cpp | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/indra/llcommon/llfasttimer_class.cpp b/indra/llcommon/llfasttimer_class.cpp index fba8a3bb57..0828635881 100644 --- a/indra/llcommon/llfasttimer_class.cpp +++ b/indra/llcommon/llfasttimer_class.cpp @@ -64,6 +64,8 @@ BOOL LLFastTimer::sMetricLog = FALSE; LLMutex* LLFastTimer::sLogLock = NULL; std::queue<LLSD> LLFastTimer::sLogQueue; +#define USE_RDTSC 0 + #if LL_LINUX || LL_SOLARIS U64 LLFastTimer::sClockResolution = 1000000000; // Nanosecond resolution #else @@ -237,10 +239,23 @@ U64 LLFastTimer::countsPerSecond() // counts per second for the *32-bit* timer #else // windows or x86-mac or x86-linux or x86-solaris U64 LLFastTimer::countsPerSecond() // counts per second for the *32-bit* timer { +#if USE_RDTSC || !LL_WINDOWS //getCPUFrequency returns MHz and sCPUClockFrequency wants to be in Hz static U64 sCPUClockFrequency = U64(LLProcessorInfo().getCPUFrequency()*1000000.0); // we drop the low-order byte in our timers, so report a lower frequency +#else + // If we're not using RDTSC, each fasttimer tick is just a performance counter tick. + // Not redefining the clock frequency itself (in llprocessor.cpp/calculate_cpu_frequency()) + // since that would change displayed MHz stats for CPUs + static bool firstcall = true; + static U64 sCPUClockFrequency; + if (firstcall) + { + QueryPerformanceFrequency((LARGE_INTEGER*)&sCPUClockFrequency); + firstcall = false; + } +#endif return sCPUClockFrequency >> 8; } #endif @@ -497,7 +512,7 @@ void LLFastTimer::NamedTimer::resetFrame() llinfos << "elapsed sec " << ((F64)getCPUClockCount64())/((F64)LLProcessorInfo().getCPUFrequency()*1000000.0) << llendl; } call_count++; - + F64 iclock_freq = 1000.0 / countsPerSecond(); // good place to calculate clock frequency F64 total_time = 0; @@ -814,7 +829,7 @@ LLFastTimer::LLFastTimer(LLFastTimer::FrameState* state) // shift off lower 8 bits for lower resolution but longer term timing // on 1Ghz machine, a 32-bit word will hold ~1000 seconds of timing -#ifdef USE_RDTSC +#if USE_RDTSC U32 LLFastTimer::getCPUClockCount32() { U32 ret_val; |