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Last active May 29, 2022 19:45
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29 May 2022 Perfchat Show Notes
@chadbrewbaker
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Great discussion, thanks for all who attended! My biggest insight today was:

  • Need for eBPF and C/ASM macros to insert stream statistics - counters, ring buffers, t-digest, min-sketch .... identify constant and low cardinality data for specialization - make it easy to get more fine grain timings.
  • Need for a common timestamp log format. Flexible from L2 fetches up to global network latency.
  • Extending Berger's Coz/Stabilizer to more IO surfaces.
  • How useful it would be to tell the OS to slow down certain memory operations for Coz style profiling. Can we expose RAM DIMMS as some sort of RAID also?
  • From last time - extending SOUPER to act more like COZ/Stabilizer in slowing code down or modifying space.

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