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  1. Nov 21, 2023
  2. Nov 07, 2023
  3. Nov 06, 2023
  4. Nov 01, 2023
  5. Oct 18, 2023
    • Raphaël Gomès's avatar
      rust-matchers: fix quadratic complexity in `FileMatcher` · 687e192d
      Raphaël Gomès authored
      Concretely, this command:
      
      ```
      $ echo hg up -r <nodeid>; time hg revert dir1 dir2 -r <othernode> --debug
      hg up -r <nodeid>
      
      real	0m14.690s
      user	0m14.766s
      sys	0m5.430s
      ```
      
      was much slower despite using 16 cores before this change.
      The approach taken here is the same one used in match.py, in exactmatcher.
      
      This changeset was originally written by Valentin Gatien-Baron in a private
      repository.
      I have redacted the commit message and did a minor clean up of the code.
      687e192d
  6. Oct 27, 2023
    • Pierre-Yves David's avatar
      revlog: add a small cache of unfiltered chunk · 0250e450
      Pierre-Yves David authored
      This can provides a massive boost to the reading of multiple revision and the
      computation of a valid delta chain.
      
      This greatly help operation like `hg log --patch`, delta computation (helping
      pull/unbundle), linkrev adjustment (helping copy tracing).
      
      A first round of benchmark for `hg log --patch --limit 1000` shows improvement
      in the 10-20% range on "small" repository like pypy or mercurial and large
      improvements (about 33%) for more complex ones like netbeans and mozilla's.
      
      These speeds up are consistent with the improvement to `hg pull` (from a server
      sending poor deltas) I saw benchmarking this last year. Further benchmark will
      be run during the freeze.
      
      I added some configuration in the experimental space to be able to further test
      the effect of various tuning for now. This feature should fit well in the
      "usage/resource profile" configuration that we should land next cycle.
      
      When it does not provides a benefit the overhead of the cache seem to be around
      2%, a small price for the big improvement. In addition I believe we could shave
      most of this overhead with a more efficent lru implementation.
      0250e450
    • Pierre-Yves David's avatar
      revlog: minor refactor in the chunk gather process · c2d2e5b6
      Pierre-Yves David authored
      We will introduce some caching in this method in the next changeset, we make
      some of the most "disruptive" change first as touching this could break (and
      maybe did during the development process).
      c2d2e5b6
  7. Oct 24, 2023
    • Pierre-Yves David's avatar
      changelog-delay: move the delay/divert logic inside the (inner) revlog · d83d7885
      Pierre-Yves David authored
      Instead of hacking throught the vfs/opener, we implement the delay/divert logic
      inside the `_InnerRevlog` and `randomaccessfile` object. This will allow to an
      alternative implementation of the `_InnerRevlog` that does not need to use Python details.
      
      As a result, the new implementation can use the transaction less agressively
      and avoid some extra output since no data had been written yet. That seems like
      a good side effect.
      d83d7885
  8. Oct 26, 2023
  9. Oct 20, 2023
  10. Oct 25, 2023
  11. Oct 24, 2023
  12. Oct 19, 2023
  13. Oct 25, 2023
  14. Oct 19, 2023
    • Pierre-Yves David's avatar
      revlog: move the `_chunk` method on the inner object · 9c8df10e
      Pierre-Yves David authored
      This is a necessary step before being able to move more logic around restoring
      a revision content there.
      
      For now, we do a simple patch for the perf extension logic, when the
      implementation of the inner object changes, we will likely need some evolution
      of the API. However this is true of many things in the perf extension. So we
      will see this later.
      9c8df10e
  15. Oct 25, 2023
    • Pierre-Yves David's avatar
      revlog: move the compression/decompression logic on the inner object · a8270490
      Pierre-Yves David authored
      This is a necessary step before being able to move more logic around restoring
      a revision content there.
      
      For now, we do a simple patch for the perf extension logic, when the
      implementation of the inner object changes, we will likely need some evolution
      of the API. However this is true of many things in the perf extension. So we
      will see this later.
      a8270490
  16. Oct 23, 2023
  17. Oct 24, 2023
  18. Oct 18, 2023
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