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Optimization records #138

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lhmouse opened this issue Nov 9, 2023 · 3 comments
Open
1 of 3 tasks

Optimization records #138

lhmouse opened this issue Nov 9, 2023 · 3 comments
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category:enhancement priority:low status:pending

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lhmouse commented Nov 9, 2023 •
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callgrind

Some obvious issues:

  • 1. Memory allocation of stacks and contexts also costs very much, but it can be mitigated by linking against tcmalloc.
  • 2. The cost of construction (17.28%) and destruction (10.52%) of an Executive_Context for a function call is too high.
  • 3. There are too many (2.5x plain calculation) name lookups for local variables, and the cost (18.00%) is non-negligible.
@lhmouse lhmouse self-assigned this Nov 9, 2023
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lhmouse commented Nov 16, 2023

callgrind

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lhmouse commented Nov 25, 2023

vtune20231125204824

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lhmouse commented Dec 3, 2023 •
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Looks like we can save ~10% by making all reference counts non-atomic. Replacing all of them is of course impractical, but can we replace some of them?

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