5 ms·

Optick: C++ Profiler for Games

56 points by generichuman 5y ago

simfoo 5y ago
Very interesting, but seems to be focussed on games / frame-based simulations. Does anyone know a similar generic graphical profiler for Linux that also provides system context (other threads, syscalls, preemptions)? I'm only aware of VTune.
- interroboink 5y ago
  Check out Tracy[1]. If you run it as root, it provides a lot of "extra" information, such as when your threads get moved between CPUs. Actually, I saw this post and thought "why should I bother when I already have Tracy?" If anyone has an answer to that, I'm curious to know (: Tracy is still a frame-based profiler, though. If you want general system-wide profiling more focused on throughput rather than latency, then I've had a good experience generating flame graphs[2] using plain Linux perf. [1] https://github.com/wolfpld/tracy https://github.com/wolfpld/tracy [2] https://www.brendangregg.com/FlameGraphs/cpuflamegraphs.html https://www.brendangregg.com/FlameGraphs/cpuflamegraphs.html
  - simfoo 5y ago
    Oh wow thanks, looks like exactly what I'm after. I've been using perf+flame graphs when I didn't have access to VTune, but will try using Tracy instead.
  - b20000 5y ago
    i’m using tracy too. it’s awesome. i looked at optick first but then settled for tracy. can’t remember the reason.
- jcelerier 5y ago
  Hotspot (https://www.kdab.com/hotspot-video/ https://www.kdab.com/hotspot-video/) :)
ensiferum 5y ago
Nice, but it only supports Vulkan? I did something similar in a few macros myself by creating nested scopes which record the current time on enter and exit. However I'm leveraging the UI built into chromium for the visualization. https://github.com/ensisoft/gamestudio/blob/master/base/trace.h https://github.com/ensisoft/gamestudio/blob/master/base/trac...
- erwincoumans 5y ago
  Yes, Chrome about://tracing is great to visualize your custom timing data. Happy used for the last 5 years in Bullet and recent physics engines, including events across tracing multiple threads: https://github.com/google-research/tiny-differentiable-simulator/blob/master/src/visualizer/opengl/utils/tiny_chrome_trace_util.cpp https://github.com/google-research/tiny-differentiable-simul...
bogwog 5y ago
Does this only work on Windows? Theres a table that mentions platform support, but it’s not clear if that’s for the visualizer or the capture library.

56 points by generichuman 5y ago

Very interesting, but seems to be focussed on games / frame-based simulations. Does anyone know a similar generic graphical profiler for Linux that also provides system context (other threads, syscalls, preemptions)? I'm only aware of VTune.

interroboink 5y ago
Check out Tracy[1]. If you run it as root, it provides a lot of "extra" information, such as when your threads get moved between CPUs. Actually, I saw this post and thought "why should I bother when I already have Tracy?" If anyone has an answer to that, I'm curious to know (: Tracy is still a frame-based profiler, though. If you want general system-wide profiling more focused on throughput rather than latency, then I've had a good experience generating flame graphs[2] using plain Linux perf. [1] https://github.com/wolfpld/tracy https://github.com/wolfpld/tracy [2] https://www.brendangregg.com/FlameGraphs/cpuflamegraphs.html https://www.brendangregg.com/FlameGraphs/cpuflamegraphs.html
- simfoo 5y ago
  Oh wow thanks, looks like exactly what I'm after. I've been using perf+flame graphs when I didn't have access to VTune, but will try using Tracy instead.
- b20000 5y ago
  i’m using tracy too. it’s awesome. i looked at optick first but then settled for tracy. can’t remember the reason.
jcelerier 5y ago
Hotspot (https://www.kdab.com/hotspot-video/ https://www.kdab.com/hotspot-video/) :)

ensiferum 5y ago

Nice, but it only supports Vulkan? I did something similar in a few macros myself by creating nested scopes which record the current time on enter and exit. However I'm leveraging the UI built into chromium for the visualization. https://github.com/ensisoft/gamestudio/blob/master/base/trace.h https://github.com/ensisoft/gamestudio/blob/master/base/trac...

erwincoumans 5y ago
Yes, Chrome about://tracing is great to visualize your custom timing data. Happy used for the last 5 years in Bullet and recent physics engines, including events across tracing multiple threads: https://github.com/google-research/tiny-differentiable-simulator/blob/master/src/visualizer/opengl/utils/tiny_chrome_trace_util.cpp https://github.com/google-research/tiny-differentiable-simul...

bogwog 5y ago

Does this only work on Windows? Theres a table that mentions platform support, but it’s not clear if that’s for the visualizer or the capture library.