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Re: How de-duplicate similar repositories with alternates

From
Derrick Stolee <stolee@gmail.com>
Date
Dec 4, 2018, 14:17 UTC
Message-ID
<c8a2b2c7-e8f1-3da2-cb39-5f7bd22d1818@gmail.com>
In-Reply-To
<87sgzdv2gz.fsf@evledraar.gmail.com>
On 12/4/2018 8:35 AM, Ævar Arnfjörð Bjarmason wrote:
>   The leftover space
> spent is the commit-grah (not de-duped like objects are), and...

The commit-graph could be shared, as the commits in each enlistment can be parsed from local with GENERATION_NUMBER_INFINITY, giving us similar speedups.

The issue is: who updates the file? As the commit-graph gets behind, performance will degrade. But it seems like you'd need similar maintenance on the alternate object store, anyway.

Thanks, -Stolee

Previous: Ævar Arnfjörð Bjarmason
Message 29 of 29 in “How de-duplicate similar repositories with alternates”
  1. Ævar Arnfjörð BjarmasonNov 29, 2018
  2. Ævar Arnfjörð BjarmasonNov 29, 2018
  3. Stefan BellerNov 29, 2018
  4. Ævar Arnfjörð BjarmasonNov 29, 2018
  5. Duy NguyenNov 29, 2018
  6. Jeff KingDec 4, 2018
  7. Derrick StoleeDec 4, 2018
  8. Jeff KingDec 4, 2018
  9. Ævar Arnfjörð BjarmasonDec 4, 2018
  10. 1/3 sha1-file: test the error behavior of alt_odb_usable()Ævar Arnfjörð Bjarmason, Dec 4, 2018
  11. sha1-file: test the error behavior of alt_odb_usable()Ævar Arnfjörð Bjarmason, Mar 28, 2019
  12. Jeff KingMar 29, 2019
  13. Ævar Arnfjörð BjarmasonMar 29, 2019
  14. Ævar Arnfjörð BjarmasonApr 8, 2019
  15. Junio C HamanoApr 9, 2019
  16. Ævar Arnfjörð BjarmasonApr 9, 2019
  17. Junio C HamanoApr 9, 2019
  18. Jeff KingApr 9, 2019
  19. Junio C HamanoApr 9, 2019
  20. 0/3 sha1-file: warn if alternate is a git repo (not object dir)Ævar Arnfjörð Bjarmason, Dec 4, 2018
  21. 2/3 sha1-file: emit error if an alternate looks like a repositoryÆvar Arnfjörð Bjarmason, Dec 4, 2018
  22. Junio C HamanoDec 5, 2018
  23. Jeff KingDec 5, 2018
  24. 3/3 sha1-file: change alternate "error:" message to "warning:"Ævar Arnfjörð Bjarmason, Dec 4, 2018
  25. Junio C HamanoDec 5, 2018
  26. Jeff KingDec 5, 2018
  27. Junio C HamanoDec 5, 2018
  28. Ævar Arnfjörð BjarmasonDec 4, 2018
  29. Derrick StoleeDec 4, 2018

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