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view tests/test-verify.t @ 38781:0a57945aaf7f
manifest: persist the manifestfulltext cache
Reconstructing the manifest from the revlog takes time, so much so that there
already is a LRU cache to avoid having to load a manifest multiple times.
This patch persists that LRU cache in the .hg/cache directory, so we can re-use
this cache across hg commands. Commit benchmark (run on Macos 10.13 on a
2017-model Macbook Pro with Core i7 2.9GHz and flash drive), testing without
and with patch run 5 times, baseline is r2a227782e754:
* committing to an existing file, against the mozilla-central repository.
Baseline real time average 1.9692, with patch 1.3786.
A new debugcommand "hg debugmanifestfulltextcache" lets you inspect the cache,
clear it, or add specific manifest nodeids to it. When calling
repo.updatecaches(), the manifest(s) for the working copy parents are added to
the cache.
The hg perfmanifest command has an additional --clear-disk switch to clear this
cache when testing manifest loading performance.
Using this command to test performance on the firefox repository for revision
f947d902ed91, whose manifest has a delta chain length of 60540, we see:
$ hg perfmanifest f947d902ed91 --clear-disk
! wall 0.972253 comb 0.970000 user 0.850000 sys 0.120000 (best of 10)
$ hg debugmanifestfulltextcache -a `hg log --debug -r f947d902ed91 | grep manifest | cut -d: -f3`
Cache contains 1 manifest entries, in order of most to least recent:
id: 0294517df4aad07c70701db43bc7ff24c3ce7dbc, size 25.6 MB
Total cache data size 25.6 MB, on-disk 0 bytes
$ hg perfmanifest f947d902ed91
! wall 0.036748 comb 0.040000 user 0.020000 sys 0.020000 (best of 100)
Worst-case scenario: a manifest text loaded from a single delta; in the firefox
repository manifest node 9a1246ff762e is the chain base for the manifest
attached to revision f947d902ed91. Loading this from a full cache file is just
as fast as without the cache; the extra node ids ensure a big full cache:
$ for node in 9a1246ff762e 1a1922c14a3e 54a31d11a36a 0294517df4aa; do
> hgd debugmanifestfulltextcache -a $node > /dev/null
> done
$ hgd perfmanifest -m 9a1246ff762e
! wall 0.077513 comb 0.080000 user 0.030000 sys 0.050000 (best of 100)
$ hgd perfmanifest -m 9a1246ff762e --clear-disk
! wall 0.078547 comb 0.080000 user 0.070000 sys 0.010000 (best of 100)
author | Martijn Pieters <mj@zopatista.com> |
---|---|
date | Tue, 31 Jul 2018 19:37:54 +0200 |
parents | 52bb6c1224ae |
children | f1186c292d03 |
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#require reporevlogstore prepare repo $ hg init a $ cd a $ echo "some text" > FOO.txt $ echo "another text" > bar.txt $ echo "more text" > QUICK.txt $ hg add adding FOO.txt adding QUICK.txt adding bar.txt $ hg ci -mtest1 verify $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files 3 files, 1 changesets, 3 total revisions verify with journal $ touch .hg/store/journal $ hg verify abandoned transaction found - run hg recover checking changesets checking manifests crosschecking files in changesets and manifests checking files 3 files, 1 changesets, 3 total revisions $ rm .hg/store/journal introduce some bugs in repo $ cd .hg/store/data $ mv _f_o_o.txt.i X_f_o_o.txt.i $ mv bar.txt.i xbar.txt.i $ rm _q_u_i_c_k.txt.i $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files warning: revlog 'data/FOO.txt.i' not in fncache! 0: empty or missing FOO.txt FOO.txt@0: manifest refers to unknown revision f62022d3d590 warning: revlog 'data/QUICK.txt.i' not in fncache! 0: empty or missing QUICK.txt QUICK.txt@0: manifest refers to unknown revision 88b857db8eba warning: revlog 'data/bar.txt.i' not in fncache! 0: empty or missing bar.txt bar.txt@0: manifest refers to unknown revision 256559129457 3 files, 1 changesets, 0 total revisions 3 warnings encountered! hint: run "hg debugrebuildfncache" to recover from corrupt fncache 6 integrity errors encountered! (first damaged changeset appears to be 0) [1] $ cd ../../.. $ cd .. Set up a repo for testing missing revlog entries $ hg init missing-entries $ cd missing-entries $ echo 0 > file $ hg ci -Aqm0 $ cp -R .hg/store .hg/store-partial $ echo 1 > file $ hg ci -Aqm1 $ cp -R .hg/store .hg/store-full Entire changelog missing $ rm .hg/store/00changelog.* $ hg verify -q 0: empty or missing changelog manifest@0: d0b6632564d4 not in changesets manifest@1: 941fc4534185 not in changesets 3 integrity errors encountered! (first damaged changeset appears to be 0) [1] $ cp -R .hg/store-full/. .hg/store Entire manifest log missing $ rm .hg/store/00manifest.* $ hg verify -q 0: empty or missing manifest 1 integrity errors encountered! (first damaged changeset appears to be 0) [1] $ cp -R .hg/store-full/. .hg/store Entire filelog missing $ rm .hg/store/data/file.* $ hg verify -q warning: revlog 'data/file.i' not in fncache! 0: empty or missing file file@0: manifest refers to unknown revision 362fef284ce2 file@1: manifest refers to unknown revision c10f2164107d 1 warnings encountered! hint: run "hg debugrebuildfncache" to recover from corrupt fncache 3 integrity errors encountered! (first damaged changeset appears to be 0) [1] $ cp -R .hg/store-full/. .hg/store Entire changelog and manifest log missing $ rm .hg/store/00changelog.* $ rm .hg/store/00manifest.* $ hg verify -q warning: orphan data file 'data/file.i' 1 warnings encountered! $ cp -R .hg/store-full/. .hg/store Entire changelog and filelog missing $ rm .hg/store/00changelog.* $ rm .hg/store/data/file.* $ hg verify -q 0: empty or missing changelog manifest@0: d0b6632564d4 not in changesets manifest@1: 941fc4534185 not in changesets warning: revlog 'data/file.i' not in fncache! ?: empty or missing file file@0: manifest refers to unknown revision 362fef284ce2 file@1: manifest refers to unknown revision c10f2164107d 1 warnings encountered! hint: run "hg debugrebuildfncache" to recover from corrupt fncache 6 integrity errors encountered! (first damaged changeset appears to be 0) [1] $ cp -R .hg/store-full/. .hg/store Entire manifest log and filelog missing $ rm .hg/store/00manifest.* $ rm .hg/store/data/file.* $ hg verify -q 0: empty or missing manifest warning: revlog 'data/file.i' not in fncache! 0: empty or missing file 1 warnings encountered! hint: run "hg debugrebuildfncache" to recover from corrupt fncache 2 integrity errors encountered! (first damaged changeset appears to be 0) [1] $ cp -R .hg/store-full/. .hg/store Changelog missing entry $ cp -f .hg/store-partial/00changelog.* .hg/store $ hg verify -q manifest@?: rev 1 points to nonexistent changeset 1 manifest@?: 941fc4534185 not in changesets file@?: rev 1 points to nonexistent changeset 1 (expected 0) 1 warnings encountered! 3 integrity errors encountered! [1] $ cp -R .hg/store-full/. .hg/store Manifest log missing entry $ cp -f .hg/store-partial/00manifest.* .hg/store $ hg verify -q manifest@1: changeset refers to unknown revision 941fc4534185 file@1: c10f2164107d not in manifests 2 integrity errors encountered! (first damaged changeset appears to be 1) [1] $ cp -R .hg/store-full/. .hg/store Filelog missing entry $ cp -f .hg/store-partial/data/file.* .hg/store/data $ hg verify -q file@1: manifest refers to unknown revision c10f2164107d 1 integrity errors encountered! (first damaged changeset appears to be 1) [1] $ cp -R .hg/store-full/. .hg/store Changelog and manifest log missing entry $ cp -f .hg/store-partial/00changelog.* .hg/store $ cp -f .hg/store-partial/00manifest.* .hg/store $ hg verify -q file@?: rev 1 points to nonexistent changeset 1 (expected 0) file@?: c10f2164107d not in manifests 1 warnings encountered! 2 integrity errors encountered! [1] $ cp -R .hg/store-full/. .hg/store Changelog and filelog missing entry $ cp -f .hg/store-partial/00changelog.* .hg/store $ cp -f .hg/store-partial/data/file.* .hg/store/data $ hg verify -q manifest@?: rev 1 points to nonexistent changeset 1 manifest@?: 941fc4534185 not in changesets file@?: manifest refers to unknown revision c10f2164107d 3 integrity errors encountered! [1] $ cp -R .hg/store-full/. .hg/store Manifest and filelog missing entry $ cp -f .hg/store-partial/00manifest.* .hg/store $ cp -f .hg/store-partial/data/file.* .hg/store/data $ hg verify -q manifest@1: changeset refers to unknown revision 941fc4534185 1 integrity errors encountered! (first damaged changeset appears to be 1) [1] $ cp -R .hg/store-full/. .hg/store Corrupt changelog base node to cause failure to read revision $ printf abcd | dd conv=notrunc of=.hg/store/00changelog.i bs=1 seek=16 \ > 2> /dev/null $ hg verify -q 0: unpacking changeset 08b1860757c2: * (glob) manifest@?: rev 0 points to unexpected changeset 0 manifest@?: d0b6632564d4 not in changesets file@?: rev 0 points to unexpected changeset 0 (expected 1) 1 warnings encountered! 4 integrity errors encountered! (first damaged changeset appears to be 0) [1] $ cp -R .hg/store-full/. .hg/store Corrupt manifest log base node to cause failure to read revision $ printf abcd | dd conv=notrunc of=.hg/store/00manifest.i bs=1 seek=16 \ > 2> /dev/null $ hg verify -q manifest@0: reading delta d0b6632564d4: * (glob) file@0: 362fef284ce2 not in manifests 2 integrity errors encountered! (first damaged changeset appears to be 0) [1] $ cp -R .hg/store-full/. .hg/store Corrupt filelog base node to cause failure to read revision $ printf abcd | dd conv=notrunc of=.hg/store/data/file.i bs=1 seek=16 \ > 2> /dev/null $ hg verify -q file@0: unpacking 362fef284ce2: * (glob) 1 integrity errors encountered! (first damaged changeset appears to be 0) [1] $ cp -R .hg/store-full/. .hg/store $ cd .. test changelog without a manifest $ hg init b $ cd b $ hg branch foo marked working directory as branch foo (branches are permanent and global, did you want a bookmark?) $ hg ci -m branchfoo $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files 0 files, 1 changesets, 0 total revisions test revlog corruption $ touch a $ hg add a $ hg ci -m a $ echo 'corrupted' > b $ dd if=.hg/store/data/a.i of=start bs=1 count=20 2>/dev/null $ cat start b > .hg/store/data/a.i $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files a@1: broken revlog! (index data/a.i is corrupted) warning: orphan data file 'data/a.i' 1 files, 2 changesets, 0 total revisions 1 warnings encountered! 1 integrity errors encountered! (first damaged changeset appears to be 1) [1] $ cd .. test revlog format 0 $ revlog-formatv0.py $ cd formatv0 $ hg verify repository uses revlog format 0 checking changesets checking manifests crosschecking files in changesets and manifests checking files 1 files, 1 changesets, 1 total revisions $ cd .. test flag processor and skipflags $ hg init skipflags $ cd skipflags $ cat >> .hg/hgrc <<EOF > [extensions] > flagprocessor=$RUNTESTDIR/flagprocessorext.py > EOF $ echo '[BASE64]content' > base64 $ hg commit -Aqm 'flag processor content' base64 $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files 1 files, 1 changesets, 1 total revisions $ cat >> $TESTTMP/break-base64.py <<EOF > from __future__ import absolute_import > import base64 > base64.b64decode=lambda x: x > EOF $ cat >> .hg/hgrc <<EOF > breakbase64=$TESTTMP/break-base64.py > EOF $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files base64@0: unpacking 794cee7777cb: integrity check failed on data/base64.i:0 1 files, 1 changesets, 1 total revisions 1 integrity errors encountered! (first damaged changeset appears to be 0) [1] $ hg verify --config verify.skipflags=2147483647 checking changesets checking manifests crosschecking files in changesets and manifests checking files 1 files, 1 changesets, 1 total revisions