git/list[1] front-page[2] threads[3] people[4] search[5] about
 

Re: [PATCH 00/17] [RFC] Commit-graph: Write incremental files

From
Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Date
May 8, 2019, 19:27 UTC
Message-ID
<87r298hhlc.fsf@evledraar.gmail.com>
In-Reply-To
<pull.184.git.gitgitgadget@gmail.com>
On Wed, May 08 2019, Derrick Stolee via GitGitGadget wrote:
> This patch series is marked as RFC quality because it is missing some key
> features and tests, but hopefully starts a concrete discussion of how the
> incremental commit-graph writes can work. If this is a good direction, then
> it would replace ds/commit-graph-format-v2.
I have some comments on 12/17 that I'll put there.

I think it would be best to start by submitting 1-11 for inclusion so we can get minor cleanups/refactoring out of the way. I've only skimmed those patches, but they seem to be obviously correct, although the diff move detection (and with -w) doesn't help much with them.

This next bit sounds petty, but I honestly don't mean it that way :)

One minor thing I want to note is 04/17. The change itself I 100% agree on (in-tree docs are bad places for TODO lists), but the commit message *still* says that a "verify" is just as slow as "write", even though I noted a ~40% difference in [1].

Do I care about that tiny isolated thing? Nope. But I *do* think it's indicative of a general thing that could be improved in these RFC iterations that I found a bit frustrating in reading through it. I.e. you're getting some of the "C[comments]", but then there's re-rolled patches that don't address those things.

What we say in the commit message for 4/17 obviously doesn't matter much at all. But there's other outstanding feedback on the last iteration that from reading this one still mostly/entirely applies.

So I'll just leave this reply at "I have a lot of comments", but that they're still sitting there.

1. https://public-inbox.org/git/87o94mql0a.fsf@evledraar.gmail.com/
Previous: Derrick StoleeNext: Derrick Stolee via GitGitGadget
Message 31 of 136 in “[RFC] Commit-graph: Write incremental files”
  1. 00/17 [RFC] Commit-graph: Write incremental filesDerrick Stolee via GitGitGadget, May 8, 2019
  2. 01/17 commit-graph: fix the_repository referenceDerrick Stolee via GitGitGadget, May 8, 2019
  3. 02/17 commit-graph: return with errors during writeDerrick Stolee via GitGitGadget, May 8, 2019
  4. 03/17 commit-graph: collapse parameters into flagsDerrick Stolee via GitGitGadget, May 8, 2019
  5. 04/17 commit-graph: remove Future Work sectionDerrick Stolee via GitGitGadget, May 8, 2019
  6. 06/17 commit-graph: extract fill_oids_from_packs()Derrick Stolee via GitGitGadget, May 8, 2019
  7. 08/17 commit-graph: extract fill_oids_from_all_packs()Derrick Stolee via GitGitGadget, May 8, 2019
  8. 10/17 commit-graph: extract copy_oids_to_commits()Derrick Stolee via GitGitGadget, May 8, 2019
  9. 09/17 commit-graph: extract count_distinct_commits()Derrick Stolee via GitGitGadget, May 8, 2019
  10. 07/17 commit-graph: extract fill_oids_from_commit_hex()Derrick Stolee via GitGitGadget, May 8, 2019
  11. 05/17 commit-graph: create write_commit_graph_contextDerrick Stolee via GitGitGadget, May 8, 2019
  12. 14/17 commit-graph: load split commit-graph filesDerrick Stolee via GitGitGadget, May 8, 2019
  13. 11/17 commit-graph: extract write_commit_graph_file()Derrick Stolee via GitGitGadget, May 8, 2019
  14. 13/17 commit-graph: lay groundwork for incremental filesDerrick Stolee via GitGitGadget, May 8, 2019
  15. 12/17 Documentation: describe split commit-graphsDerrick Stolee via GitGitGadget, May 8, 2019
  16. SZEDER GáborMay 8, 2019
  17. Derrick StoleeMay 8, 2019
  18. Ævar Arnfjörð BjarmasonMay 8, 2019
  19. Junio C HamanoMay 9, 2019
  20. Derrick StoleeMay 9, 2019
  21. Derrick StoleeMay 9, 2019
  22. Ævar Arnfjörð BjarmasonMay 9, 2019
  23. Derrick StoleeMay 9, 2019
  24. Ævar Arnfjörð BjarmasonMay 9, 2019
  25. Derrick StoleeMay 10, 2019
  26. 16/17 commit-graph: add --split optionDerrick Stolee via GitGitGadget, May 8, 2019
  27. 15/17 commit-graph: write split commit-graph filesDerrick Stolee via GitGitGadget, May 8, 2019
  28. 17/17 fetch: add fetch.writeCommitGraph config settingDerrick Stolee via GitGitGadget, May 8, 2019
  29. Ævar Arnfjörð BjarmasonMay 9, 2019
  30. Derrick StoleeMay 9, 2019
  31. Ævar Arnfjörð BjarmasonMay 8, 2019
  32. 00/11 [RFC] Commit-graph: Write incremental filesDerrick Stolee via GitGitGadget, May 22, 2019
  33. 01/11 commit-graph: document commit-graph chainsDerrick Stolee via GitGitGadget, May 22, 2019
  34. 02/11 commit-graph: prepare for commit-graph chainsDerrick Stolee via GitGitGadget, May 22, 2019
  35. 03/11 commit-graph: rename commit_compare to oid_compareDerrick Stolee via GitGitGadget, May 22, 2019
  36. 04/11 commit-graph: load commit-graph chainsDerrick Stolee via GitGitGadget, May 22, 2019
  37. 05/11 commit-graph: add base graphs chunkDerrick Stolee via GitGitGadget, May 22, 2019
  38. 06/11 commit-graph: rearrange chunk count logicDerrick Stolee via GitGitGadget, May 22, 2019
  39. 08/11 commit-graph: add --split option to builtinDerrick Stolee via GitGitGadget, May 22, 2019
  40. SZEDER GáborMay 27, 2019
  41. 07/11 commit-graph: write commit-graph chainsDerrick Stolee via GitGitGadget, May 22, 2019
  42. 10/11 commit-graph: allow cross-alternate chainsDerrick Stolee via GitGitGadget, May 22, 2019
  43. 09/11 commit-graph: merge commit-graph chainsDerrick Stolee via GitGitGadget, May 22, 2019
  44. Ævar Arnfjörð BjarmasonMay 23, 2019
  45. Derrick StoleeMay 23, 2019
  46. 11/11 commit-graph: expire commit-graph filesDerrick Stolee via GitGitGadget, May 22, 2019
  47. 00/14 Commit-graph: Write incremental filesDerrick Stolee via GitGitGadget, Jun 3, 2019
  48. 01/14 commit-graph: document commit-graph chainsDerrick Stolee via GitGitGadget, Jun 3, 2019
  49. Junio C HamanoJun 5, 2019
  50. Derrick StoleeJun 5, 2019
  51. Philip OakleyJun 6, 2019
  52. Derrick StoleeJun 6, 2019
  53. Philip OakleyJun 6, 2019
  54. 02/14 commit-graph: prepare for commit-graph chainsDerrick Stolee via GitGitGadget, Jun 3, 2019
  55. 04/14 commit-graph: load commit-graph chainsDerrick Stolee via GitGitGadget, Jun 3, 2019
  56. 03/14 commit-graph: rename commit_compare to oid_compareDerrick Stolee via GitGitGadget, Jun 3, 2019
  57. 08/14 commit-graph: add --split option to builtinDerrick Stolee via GitGitGadget, Jun 3, 2019
  58. 06/14 commit-graph: rearrange chunk count logicDerrick Stolee via GitGitGadget, Jun 3, 2019
  59. 05/14 commit-graph: add base graphs chunkDerrick Stolee via GitGitGadget, Jun 3, 2019
  60. 07/14 commit-graph: write commit-graph chainsDerrick Stolee via GitGitGadget, Jun 3, 2019
  61. 10/14 commit-graph: allow cross-alternate chainsDerrick Stolee via GitGitGadget, Jun 3, 2019
  62. 11/14 commit-graph: expire commit-graph filesDerrick Stolee via GitGitGadget, Jun 3, 2019
  63. 09/14 commit-graph: merge commit-graph chainsDerrick Stolee via GitGitGadget, Jun 3, 2019
  64. 14/14 commit-graph: clean up chains after flattened writeDerrick Stolee via GitGitGadget, Jun 3, 2019
  65. 13/14 commit-graph: verify chains with --shallow modeDerrick Stolee via GitGitGadget, Jun 3, 2019
  66. 12/14 commit-graph: create options for split filesDerrick Stolee via GitGitGadget, Jun 3, 2019
  67. 00/14 Commit-graph: Write incremental filesDerrick Stolee via GitGitGadget, Jun 6, 2019
  68. 02/14 commit-graph: prepare for commit-graph chainsDerrick Stolee via GitGitGadget, Jun 6, 2019
  69. Philip OakleyJun 6, 2019
  70. Junio C HamanoJun 6, 2019
  71. Derrick StoleeJun 7, 2019
  72. 03/14 commit-graph: rename commit_compare to oid_compareDerrick Stolee via GitGitGadget, Jun 6, 2019
  73. 01/14 commit-graph: document commit-graph chainsDerrick Stolee via GitGitGadget, Jun 6, 2019
  74. 06/14 commit-graph: rearrange chunk count logicDerrick Stolee via GitGitGadget, Jun 6, 2019
  75. Junio C HamanoJun 7, 2019
  76. 04/14 commit-graph: load commit-graph chainsDerrick Stolee via GitGitGadget, Jun 6, 2019
  77. Junio C HamanoJun 6, 2019
  78. Derrick StoleeJun 7, 2019
  79. 07/14 commit-graph: write commit-graph chainsDerrick Stolee via GitGitGadget, Jun 6, 2019
  80. 05/14 commit-graph: add base graphs chunkDerrick Stolee via GitGitGadget, Jun 6, 2019
  81. Junio C HamanoJun 7, 2019
  82. 09/14 commit-graph: merge commit-graph chainsDerrick Stolee via GitGitGadget, Jun 6, 2019
  83. 11/14 commit-graph: expire commit-graph filesDerrick Stolee via GitGitGadget, Jun 6, 2019
  84. 10/14 commit-graph: allow cross-alternate chainsDerrick Stolee via GitGitGadget, Jun 6, 2019
  85. Philip OakleyJun 6, 2019
  86. 08/14 commit-graph: add --split option to builtinDerrick Stolee via GitGitGadget, Jun 6, 2019
  87. Junio C HamanoJun 7, 2019
  88. Derrick StoleeJun 11, 2019
  89. Junio C HamanoJun 11, 2019
  90. 12/14 commit-graph: create options for split filesDerrick Stolee via GitGitGadget, Jun 6, 2019
  91. Ramsay JonesJun 6, 2019
  92. 13/14 commit-graph: verify chains with --shallow modeDerrick Stolee via GitGitGadget, Jun 6, 2019
  93. 14/14 commit-graph: clean up chains after flattened writeDerrick Stolee via GitGitGadget, Jun 6, 2019
  94. Junio C HamanoJun 6, 2019
  95. Derrick StoleeJun 7, 2019
  96. 00/16 Commit-graph: Write incremental filesDerrick Stolee via GitGitGadget, Jun 7, 2019
  97. 01/16 commit-graph: document commit-graph chainsDerrick Stolee via GitGitGadget, Jun 7, 2019
  98. 02/16 commit-graph: prepare for commit-graph chainsDerrick Stolee via GitGitGadget, Jun 7, 2019
  99. 07/16 commit-graph: write commit-graph chainsDerrick Stolee via GitGitGadget, Jun 7, 2019
  100. 08/16 commit-graph: add --split option to builtinDerrick Stolee via GitGitGadget, Jun 7, 2019
  101. 05/16 commit-graph: add base graphs chunkDerrick Stolee via GitGitGadget, Jun 7, 2019
  102. 04/16 commit-graph: load commit-graph chainsDerrick Stolee via GitGitGadget, Jun 7, 2019
  103. Junio C HamanoJun 10, 2019
  104. Derrick StoleeJun 10, 2019
  105. 03/16 commit-graph: rename commit_compare to oid_compareDerrick Stolee via GitGitGadget, Jun 7, 2019
  106. 10/16 commit-graph: allow cross-alternate chainsDerrick Stolee via GitGitGadget, Jun 7, 2019
  107. 09/16 commit-graph: merge commit-graph chainsDerrick Stolee via GitGitGadget, Jun 7, 2019
  108. 13/16 commit-graph: verify chains with --shallow modeDerrick Stolee via GitGitGadget, Jun 7, 2019
  109. 15/16 commit-graph: test octopus merges with --splitDerrick Stolee via GitGitGadget, Jun 7, 2019
  110. 16/16 commit-graph: test --split across alternate without --splitDerrick Stolee via GitGitGadget, Jun 7, 2019
  111. 14/16 commit-graph: clean up chains after flattened writeDerrick Stolee via GitGitGadget, Jun 7, 2019
  112. 12/16 commit-graph: create options for split filesDerrick Stolee via GitGitGadget, Jun 7, 2019
  113. 06/16 commit-graph: rearrange chunk count logicDerrick Stolee via GitGitGadget, Jun 7, 2019
  114. 11/16 commit-graph: expire commit-graph filesDerrick Stolee via GitGitGadget, Jun 7, 2019
  115. commit-graph: normalize commit-graph filenamesDerrick Stolee, Jun 17, 2019
  116. Derrick StoleeJun 17, 2019
  117. commit-graph: normalize commit-graph filenamesDerrick Stolee, Jun 17, 2019
  118. 00/18 Commit-graph: Write incremental filesDerrick Stolee via GitGitGadget, Jun 18, 2019
  119. 01/18 commit-graph: document commit-graph chainsDerrick Stolee via GitGitGadget, Jun 18, 2019
  120. 04/18 commit-graph: load commit-graph chainsDerrick Stolee via GitGitGadget, Jun 18, 2019
  121. 05/18 commit-graph: add base graphs chunkDerrick Stolee via GitGitGadget, Jun 18, 2019
  122. 03/18 commit-graph: rename commit_compare to oid_compareDerrick Stolee via GitGitGadget, Jun 18, 2019
  123. 08/18 commit-graph: add --split option to builtinDerrick Stolee via GitGitGadget, Jun 18, 2019
  124. 09/18 commit-graph: merge commit-graph chainsDerrick Stolee via GitGitGadget, Jun 18, 2019
  125. 06/18 commit-graph: rearrange chunk count logicDerrick Stolee via GitGitGadget, Jun 18, 2019
  126. 07/18 commit-graph: write commit-graph chainsDerrick Stolee via GitGitGadget, Jun 18, 2019
  127. 10/18 commit-graph: allow cross-alternate chainsDerrick Stolee via GitGitGadget, Jun 18, 2019
  128. 02/18 commit-graph: prepare for commit-graph chainsDerrick Stolee via GitGitGadget, Jun 18, 2019
  129. 14/18 commit-graph: clean up chains after flattened writeDerrick Stolee via GitGitGadget, Jun 18, 2019
  130. 15/18 commit-graph: test octopus merges with --splitDerrick Stolee via GitGitGadget, Jun 18, 2019
  131. 18/18 commit-graph: test verify across alternatesDerrick Stolee via GitGitGadget, Jun 18, 2019
  132. 11/18 commit-graph: expire commit-graph filesDerrick Stolee via GitGitGadget, Jun 18, 2019
  133. 13/18 commit-graph: verify chains with --shallow modeDerrick Stolee via GitGitGadget, Jun 18, 2019
  134. 12/18 commit-graph: create options for split filesDerrick Stolee via GitGitGadget, Jun 18, 2019
  135. 16/18 commit-graph: test --split across alternate without --splitDerrick Stolee via GitGitGadget, Jun 18, 2019
  136. 17/18 commit-graph: normalize commit-graph filenamesDerrick Stolee via GitGitGadget, Jun 18, 2019

Read the whole thread, see it on lore, or plain text.

$ cat FOOTERMessages come from the public archive at lore.kernel.org/git, fetched every hour. The front page is chosen and written each morning by an AI editor and can be wrong; the threads themselves are the record. About and API. For agents: an MCP server at https://gitlist.dev/mcp, and any thread, story or person page as Markdown by adding .md to its URL (or sending Accept: text/markdown). Details in /llms.txt.