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From: Jeff King <peff@peff.net>
To: Geert Jansen <gerardu@amazon.com>
Cc: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
	"Junio C Hamano" <gitster@pobox.com>,
	"git@vger.kernel.org" <git@vger.kernel.org>,
	"René Scharfe" <l.s.r@web.de>,
	"Takuto Ikuta" <tikuta@chromium.org>
Subject: [PATCH 0/9] caching loose objects
Date: Mon, 12 Nov 2018 09:46:28 -0500	[thread overview]
Message-ID: <20181112144627.GA2478@sigill.intra.peff.net> (raw)
In-Reply-To: <20181108120256.GA29432@sigill.intra.peff.net>

Here's the series I mentioned earlier in the thread to cache loose
objects when answering has_object_file(..., OBJECT_INFO_QUICK). For
those just joining us, this makes operations that look up a lot of
missing objects (like "index-pack" looking for collisions) faster. This
is mostly targeted at systems where stat() is slow, like over NFS, but
it seems to give a 2% speedup indexing a full git.git packfile into an
empty repository (i.e., what you'd see on a clone).

I'm adding René Scharfe and Takuto Ikuta to the cc for their previous
work in loose-object caching.

The interesting bit is patch 8. The rest of it is cleanup to let us
treat alternates and the main object directory similarly.

  [1/9]: fsck: do not reuse child_process structs
  [2/9]: submodule--helper: prefer strip_suffix() to ends_with()
  [3/9]: rename "alternate_object_database" to "object_directory"
  [4/9]: sha1_file_name(): overwrite buffer instead of appending
  [5/9]: handle alternates paths the same as the main object dir
  [6/9]: sha1-file: use an object_directory for the main object dir
  [7/9]: object-store: provide helpers for loose_objects_cache
  [8/9]: sha1-file: use loose object cache for quick existence check
  [9/9]: fetch-pack: drop custom loose object cache

 builtin/count-objects.c     |   4 +-
 builtin/fsck.c              |  35 +++---
 builtin/grep.c              |   2 +-
 builtin/submodule--helper.c |   9 +-
 commit-graph.c              |  13 +--
 environment.c               |   4 +-
 fetch-pack.c                |  39 +------
 http-walker.c               |   2 +-
 http.c                      |   4 +-
 object-store.h              |  60 +++++------
 object.c                    |  26 ++---
 packfile.c                  |  20 ++--
 path.c                      |   2 +-
 repository.c                |   8 +-
 sha1-file.c                 | 210 ++++++++++++++++++------------------
 sha1-name.c                 |  42 ++------
 transport.c                 |   2 +-
 17 files changed, 209 insertions(+), 273 deletions(-)

-Peff

  parent reply	other threads:[~2018-11-12 14:46 UTC|newest]

Thread overview: 99+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-25 18:38 [RFC PATCH] index-pack: improve performance on NFS Jansen, Geert
2018-10-26  0:21 ` Junio C Hamano
2018-10-26 20:38   ` Ævar Arnfjörð Bjarmason
2018-10-27  7:26     ` Junio C Hamano
2018-10-27  9:33       ` Jeff King
2018-10-27 11:22         ` Ævar Arnfjörð Bjarmason
2018-10-28 22:50           ` [PATCH 0/4] index-pack: optionally turn off SHA-1 collision checking Ævar Arnfjörð Bjarmason
2018-10-30  2:49             ` Geert Jansen
2018-10-30  9:04               ` Junio C Hamano
2018-10-30 18:43             ` [PATCH v2 0/3] index-pack: test updates Ævar Arnfjörð Bjarmason
2018-11-13 20:19               ` [PATCH v3] index-pack: add ability to disable SHA-1 collision check Ævar Arnfjörð Bjarmason
2018-11-14  7:09                 ` Junio C Hamano
2018-11-14 12:40                   ` Ævar Arnfjörð Bjarmason
2018-10-30 18:43             ` [PATCH v2 1/3] pack-objects test: modernize style Ævar Arnfjörð Bjarmason
2018-10-30 18:43             ` [PATCH v2 2/3] pack-objects tests: don't leave test .git corrupt at end Ævar Arnfjörð Bjarmason
2018-10-30 18:43             ` [PATCH v2 3/3] index-pack tests: don't leave test repo dirty " Ævar Arnfjörð Bjarmason
2018-10-28 22:50           ` [PATCH 1/4] pack-objects test: modernize style Ævar Arnfjörð Bjarmason
2018-10-28 22:50           ` [PATCH 2/4] pack-objects tests: don't leave test .git corrupt at end Ævar Arnfjörð Bjarmason
2018-10-28 22:50           ` [PATCH 3/4] index-pack tests: don't leave test repo dirty " Ævar Arnfjörð Bjarmason
2018-10-28 22:50           ` [PATCH 4/4] index-pack: add ability to disable SHA-1 collision check Ævar Arnfjörð Bjarmason
2018-10-29 15:04           ` [RFC PATCH] index-pack: improve performance on NFS Jeff King
2018-10-29 15:09             ` Jeff King
2018-10-29 19:36             ` Ævar Arnfjörð Bjarmason
2018-10-29 23:27               ` Jeff King
2018-11-07 22:55                 ` Geert Jansen
2018-11-08 12:02                   ` Jeff King
2018-11-08 20:58                     ` Geert Jansen
2018-11-08 21:18                       ` Jeff King
2018-11-08 21:55                         ` Geert Jansen
2018-11-08 22:20                     ` Ævar Arnfjörð Bjarmason
2018-11-09 10:11                       ` Ævar Arnfjörð Bjarmason
2018-11-12 14:31                       ` Jeff King
2018-11-12 14:46                     ` Jeff King [this message]
2018-11-12 14:46                       ` [PATCH 1/9] fsck: do not reuse child_process structs Jeff King
2018-11-12 15:26                         ` Derrick Stolee
2018-11-12 14:47                       ` [PATCH 2/9] submodule--helper: prefer strip_suffix() to ends_with() Jeff King
2018-11-12 18:23                         ` Stefan Beller
2018-11-12 14:48                       ` [PATCH 3/9] rename "alternate_object_database" to "object_directory" Jeff King
2018-11-12 15:30                         ` Derrick Stolee
2018-11-12 15:36                           ` Jeff King
2018-11-12 19:41                             ` Ramsay Jones
2018-11-12 14:48                       ` [PATCH 4/9] sha1_file_name(): overwrite buffer instead of appending Jeff King
2018-11-12 15:32                         ` Derrick Stolee
2018-11-12 14:49                       ` [PATCH 5/9] handle alternates paths the same as the main object dir Jeff King
2018-11-12 15:38                         ` Derrick Stolee
2018-11-12 15:46                           ` Jeff King
2018-11-12 15:50                             ` Derrick Stolee
2018-11-12 14:50                       ` [PATCH 6/9] sha1-file: use an object_directory for " Jeff King
2018-11-12 15:48                         ` Derrick Stolee
2018-11-12 16:09                           ` Jeff King
2018-11-12 19:04                             ` Stefan Beller
2018-11-22 17:42                               ` Jeff King
2018-11-12 18:48                           ` Stefan Beller
2018-11-12 14:50                       ` [PATCH 7/9] object-store: provide helpers for loose_objects_cache Jeff King
2018-11-12 19:24                         ` René Scharfe
2018-11-12 20:16                           ` Jeff King
2018-11-12 14:54                       ` [PATCH 8/9] sha1-file: use loose object cache for quick existence check Jeff King
2018-11-12 16:00                         ` Derrick Stolee
2018-11-12 16:01                         ` Ævar Arnfjörð Bjarmason
2018-11-12 16:21                           ` Jeff King
2018-11-12 22:18                             ` Ævar Arnfjörð Bjarmason
2018-11-12 22:30                               ` Ævar Arnfjörð Bjarmason
2018-11-13 10:02                                 ` Ævar Arnfjörð Bjarmason
2018-11-14 18:21                                   ` René Scharfe
2018-12-02 10:52                                   ` René Scharfe
2018-12-03 22:04                                     ` Jeff King
2018-12-04 21:45                                       ` René Scharfe
2018-12-05  4:46                                         ` Jeff King
2018-12-05  6:02                                           ` René Scharfe
2018-12-05  6:51                                             ` Jeff King
2018-12-05  8:15                                               ` Jeff King
2018-12-05 18:41                                                 ` René Scharfe
2018-12-05 20:17                                                   ` Jeff King
2018-11-12 22:44                             ` Geert Jansen
2018-11-27 20:48                         ` René Scharfe
2018-12-01 19:49                           ` Jeff King
2018-11-12 14:55                       ` [PATCH 9/9] fetch-pack: drop custom loose object cache Jeff King
2018-11-12 19:25                         ` René Scharfe
2018-11-12 19:32                           ` Ævar Arnfjörð Bjarmason
2018-11-12 20:07                             ` Jeff King
2018-11-12 20:13                             ` René Scharfe
2018-11-12 16:02                       ` [PATCH 0/9] caching loose objects Derrick Stolee
2018-11-12 19:10                         ` Stefan Beller
2018-11-09 13:43                   ` [RFC PATCH] index-pack: improve performance on NFS Ævar Arnfjörð Bjarmason
2018-11-09 16:08                     ` Duy Nguyen
2018-11-10 14:04                       ` Ævar Arnfjörð Bjarmason
2018-11-12 14:34                         ` Jeff King
2018-11-12 22:58                     ` Geert Jansen
2018-10-27 14:04         ` Duy Nguyen
2018-10-29 15:18           ` Jeff King
2018-10-29  0:48         ` Junio C Hamano
2018-10-29 15:20           ` Jeff King
2018-10-29 18:43             ` Ævar Arnfjörð Bjarmason
2018-10-29 21:34           ` Geert Jansen
2018-10-29 21:50             ` Jeff King
2018-10-29 22:21               ` Geert Jansen
2018-10-29 22:27             ` Jeff King
2018-10-29 22:35               ` Stefan Beller
2018-10-29 23:29                 ` Jeff King

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