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Re: [PATCH 0/5] A series of performance enhancements in the memihash and name-cache area

From
Jeff King <peff@peff.net>
Date
Feb 15, 2017, 16:44 UTC
Message-ID
<20170215164416.tekykkzhm6qlj2h2@sigill.intra.peff.net>
In-Reply-To
<16b1259c-4cdc-8f4d-db47-d724386a3d2b@jeffhostetler.com>
On Wed, Feb 15, 2017 at 09:27:53AM -0500, Jeff Hostetler wrote:
Show 5 quoted lines
> I have some informal numbers in a spreadsheet.  I was seeing
> a 8-9% speed up on a status on my gigantic repo.
> 
> I'll try to put together a before/after perf-test to better
> demonstrate this.

Thanks. What I'm mostly curious about is how much each individual step buys. Sometimes when doing a long optimization series, I find that some of the optimizations make other ones somewhat redundant (e.g., if patch 2 causes us to call the optimized code from patch 3 less often).

-Peff
Previous: Jeff HostetlerNext: Junio C Hamano
Message 15 of 25 in “A series of performance enhancements in the memihash and name-cache area”
  1. 0/5 A series of performance enhancements in the memihash and name-cache areaJohannes Schindelin, Feb 14, 2017
  2. 5/5 name-hash: remember previous dir_entry during lazy_init_name_hashJohannes Schindelin, Feb 14, 2017
  3. 3/5 name-hash: precompute hash values during preload-indexJohannes Schindelin, Feb 14, 2017
  4. Junio C HamanoFeb 18, 2017
  5. Jeff HostetlerFeb 19, 2017
  6. Junio C HamanoFeb 19, 2017
  7. 1/5 name-hash: eliminate duplicate memihash callJohannes Schindelin, Feb 14, 2017
  8. 2/5 hashmap: allow memihash computation to be continuedJohannes Schindelin, Feb 14, 2017
  9. Junio C HamanoFeb 18, 2017
  10. Johannes SchindelinFeb 20, 2017
  11. Junio C HamanoFeb 20, 2017
  12. 4/5 name-hash: specify initial size for istate.dir_hash tableJohannes Schindelin, Feb 14, 2017
  13. Jeff KingFeb 14, 2017
  14. Jeff HostetlerFeb 15, 2017
  15. Jeff KingFeb 15, 2017
  16. Junio C HamanoFeb 18, 2017
  17. Jeff HostetlerFeb 19, 2017
  18. Junio C HamanoFeb 18, 2017
  19. Jeff KingFeb 18, 2017
  20. Junio C HamanoFeb 18, 2017
  21. Jeff HostetlerFeb 18, 2017
  22. Junio C HamanoFeb 19, 2017
  23. Junio C HamanoMar 2, 2017
  24. Jeff HostetlerMar 2, 2017
  25. Junio C HamanoMar 2, 2017

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