| Profiling |
| ========= |
| |
| OpenSWR contains built-in profiling which can be enabled |
| at build time to provide insight into performance tuning. |
| |
| To enable this, uncomment the following line in ``rasterizer/core/knobs.h`` and rebuild: :: |
| |
| //#define KNOB_ENABLE_RDTSC |
| |
| Running an application will result in a ``rdtsc.txt`` file being |
| created in current working directory. This file contains profile |
| information captured between the ``KNOB_BUCKETS_START_FRAME`` and |
| ``KNOB_BUCKETS_END_FRAME`` (see knobs section). |
| |
| The resulting file will contain sections for each thread with a |
| hierarchical breakdown of the time spent in the various operations. |
| For example: :: |
| |
| Thread 0 (API) |
| %Tot %Par Cycles CPE NumEvent CPE2 NumEvent2 Bucket |
| 0.00 0.00 28370 2837 10 0 0 APIClearRenderTarget |
| 0.00 41.23 11698 1169 10 0 0 |-> APIDrawWakeAllThreads |
| 0.00 18.34 5202 520 10 0 0 |-> APIGetDrawContext |
| 98.72 98.72 12413773688 29957 414380 0 0 APIDraw |
| 0.36 0.36 44689364 107 414380 0 0 |-> APIDrawWakeAllThreads |
| 96.36 97.62 12117951562 9747 1243140 0 0 |-> APIGetDrawContext |
| 0.00 0.00 19904 995 20 0 0 APIStoreTiles |
| 0.00 7.88 1568 78 20 0 0 |-> APIDrawWakeAllThreads |
| 0.00 25.28 5032 251 20 0 0 |-> APIGetDrawContext |
| 1.28 1.28 161344902 64 2486370 0 0 APIGetDrawContext |
| 0.00 0.00 50368 2518 20 0 0 APISync |
| 0.00 2.70 1360 68 20 0 0 |-> APIDrawWakeAllThreads |
| 0.00 65.27 32876 1643 20 0 0 |-> APIGetDrawContext |
| |
| |
| Thread 1 (WORKER) |
| %Tot %Par Cycles CPE NumEvent CPE2 NumEvent2 Bucket |
| 83.92 83.92 13198987522 96411 136902 0 0 FEProcessDraw |
| 24.91 29.69 3918184840 167 23410158 0 0 |-> FEFetchShader |
| 11.17 13.31 1756972646 75 23410158 0 0 |-> FEVertexShader |
| 8.89 10.59 1397902996 59 23410161 0 0 |-> FEPAAssemble |
| 19.06 22.71 2997794710 384 7803387 0 0 |-> FEClipTriangles |
| 11.67 61.21 1834958176 235 7803387 0 0 |-> FEBinTriangles |
| 0.00 0.00 0 0 187258 0 0 |-> FECullZeroAreaAndBackface |
| 0.00 0.00 0 0 60051033 0 0 |-> FECullBetweenCenters |
| 0.11 0.11 17217556 2869592 6 0 0 FEProcessStoreTiles |
| 15.97 15.97 2511392576 73665 34092 0 0 WorkerWorkOnFifoBE |
| 14.04 87.95 2208687340 9187 240408 0 0 |-> WorkerFoundWork |
| 0.06 0.43 9390536 13263 708 0 0 |-> BELoadTiles |
| 0.00 0.01 293020 182 1609 0 0 |-> BEClear |
| 12.63 89.94 1986508990 949 2093014 0 0 |-> BERasterizeTriangle |
| 2.37 18.75 372374596 177 2093014 0 0 |-> BETriangleSetup |
| 0.42 3.35 66539016 31 2093014 0 0 |-> BEStepSetup |
| 0.00 0.00 0 0 21766 0 0 |-> BETrivialReject |
| 1.05 8.33 165410662 79 2071248 0 0 |-> BERasterizePartial |
| 6.06 48.02 953847796 1260 756783 0 0 |-> BEPixelBackend |
| 0.20 3.30 31521202 41 756783 0 0 |-> BESetup |
| 0.16 2.69 25624304 33 756783 0 0 |-> BEBarycentric |
| 0.18 2.92 27884986 36 756783 0 0 |-> BEEarlyDepthTest |
| 0.19 3.20 30564174 41 744058 0 0 |-> BEPixelShader |
| 0.26 4.30 41058646 55 744058 0 0 |-> BEOutputMerger |
| 1.27 20.94 199750822 32 6054264 0 0 |-> BEEndTile |
| 0.33 2.34 51758160 23687 2185 0 0 |-> BEStoreTiles |
| 0.20 60.22 31169500 28807 1082 0 0 |-> B8G8R8A8_UNORM |
| 0.00 0.00 302752 302752 1 0 0 WorkerWaitForThreadEvent |
| |
