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Coz: Causal Profiling

26 mentions on Hacker News by 24 people: 11 stories, 15 comments · first 2014-12-10 · latest 2026-10-07

Mentions per year 26 mentions · busiest year 2021 (5)
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  1. ▲ 1
    Coz: Causal Profiling
    story by gjvc · 2026-10-07 · 0 comments
  2. ▲ 1
    Coz: Causal profiling that measures optimization potential
    story by embedding-shape · 2026-04-08 · 0 comments
  3. …global performance utterly unchanged, everyone gets to "optimize" their own code. Something like https://github.com/plasma-umass/coz might be the way forward. https://www.youtube.com/watch?v=r-TLSBdHe1A
    comment by yencabulator · 2025-10-17 · in Can we know whether a profiler is accurate?
  4. …- Coz: A causal profiler that tells you where to optimize your code (C/C++/Rust/Swift/Java) - https://github.com/plasma-umass/coz - CSrankings: Ranks the world's CS departments - https://csrankings.org/ - CoverUp: Automatically generates…
    comment by pella · 2025-09-09 · in ATC/OSDI '25 Joint Keynote: Accelerating Software Dev: The LLM (R)Evolution [video]
  5. Obviously from the paths it's Linux. Running on Arch. Looks to be an open issue FWIW: https://github.com/plasma-umass/coz/issues/180 The project also sees very little meaningful maintenance activity which leads me to believe it failed to…
    comment by vlovich123 · 2024-04-21 · in Coz: Causal Profiling
  6. ▲ 89
    Coz: Causal Profiling
    story by keepamovin · 2024-04-19 · 17 comments
  7. ▲ 2
    Coz: Finding code that counts with causal profiling
    story by alecst · 2024-01-16 · 0 comments
  8. …Coz is pretty trivial to set up with Zig too. 1. https://m.youtube.com/watch?v=r-TLSBdHe1A 2. https://github.com/plasma-umass/coz
    comment by j-pb · 2023-06-17 · in Poop: Performance Optimizer Observation Platform
  9. ▲ 3
    Coz: Finding Code That Counts with Causal Profiling
    story by outworlder · 2022-10-17 · 0 comments
  10. ▲ 1
    Ask HN: Has anyone used Coz for casual profiling?
    story by dist1ll · 2022-07-19 · 0 comments
  11. For the impatient, the profiler is available at https://github.com/plasma-umass/coz
    comment by Tiberium · 2021-12-13 · in Show HN: 10-40% faster LZMA decoder using x86 CMOVcc
  12. Take a look at coz the causal profiler: https://github.com/plasma-umass/coz From what I know this is the closest project that fits your description.
    comment by efferifick · 2021-12-06 · in Tip: Time-Proportional Instruction Profiling [pdf]
  13. …is a technique which is relevant specifically because profiling can miss the forest for the trees: https://github.com/plasma-umass/coz It's really easy to write a benchmark which measures a different scenario from what your application is…
    comment by 6keZbCECT2uB · 2021-07-12 · in (Risp (In (Rust) (Lisp)))
  14. …And who knows, maybe they'd even be interested in using coz afterwards: https://github.com/plasma-umass/coz
    comment by vanderZwan · 2021-04-04 · in Prefix Trees in Action
  15. ▲ 2
    Coz: Finding Code That Counts with Causal Profiling
    story by harrisonbrewton · 2021-02-05 · 0 comments
  16. …2. https://www.youtube.com/watch?v=r-TLSBdHe1A 3. https://arxiv.org/pdf/1608.03676v1.pdf 4. https://github.com/plasma-umass/coz
    comment by moonchild · 2020-06-24 · in C performance mystery: delete unused string constant
  17. …to meet the user on their knowledge level so they can dig in as deep as they need to/want to. [1] https://github.com/plasma-umass/coz [2] https://arxiv.org/abs/1608.03676
    comment by vlovich123 · 2020-02-24 · in Reflections on Software Performance
  18. …strangeloop), which I highly recommend. Lots of really nice insight, even outside of this tool. [1] https://github.com/plasma-umass/coz [2] https://www.youtube.com/watch?v=r-TLSBdHe1A
    comment by jaybosamiya · 2020-01-19 · in Measure code execution time accurately in Python
  19. ▲ 1
    Coz: Causal Profiling
    story by toasted_flakes · 2019-12-04 · 0 comments
  20. …Video presentation: https://www.youtube.com/watch?v=jE0V-p1odPg&t=0m28s Coz: https://github.com/plasma-umass/coz JCoz (Java version): http://decave.github.io/JCoz/ and https://github.com/Decave/JCoz
    comment by richdougherty · 2019-12-03 · in Amazon CodeGuru – Preview
  21. …to raw flame graphs. If you have time to watch their talk, it's linked on the github readme. [1] https://github.com/plasma-umass/coz/blob/master/README.md
    comment by eyegor · 2019-11-11 · in Evaluation of CPU profiling tools: gperftools, Valgrind and gprof (2015)
  22. ▲ 1
    Coz: Finding Code That Counts with Causal Profiling
    story by eyegor · 2019-10-26 · 0 comments
  23. ▲ 1
    Coz: Finding Code That Counts with Causal Profiling
    story by taylodl · 2016-06-09 · 0 comments
  24. Better link for paper: https://github.com/plasma-umass/coz/blob/master/Coz-Curtsing...
    comment by emeryberger · 2015-11-03 · in A better way to profile multithreaded programs
  25. It is worth noting that the profiler is fully open-source: https://github.com/plasma-umass/coz . There is even a package for Arch Linux!
    comment by Jonhoo · 2015-10-15 · in COZ: Finding Code That Counts with Causal Profiling [pdf]
  26. ▲ 31
    Coz: Causal Profiling
    story by jsnell · 2014-12-10 · 3 comments