Mercurial > hg
view tests/test-journal.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 | 31750413f8d7 |
children | dea771e63c3c |
line wrap: on
line source
Tests for the journal extension; records bookmark locations. $ cat >> testmocks.py << EOF > # mock out procutil.getuser() and util.makedate() to supply testable values > import os > from mercurial import util, pycompat > from mercurial.utils import dateutil, procutil > def mockgetuser(): > return b'foobar' > > def mockmakedate(): > filename = os.path.join(os.environ['TESTTMP'], 'testtime') > try: > with open(filename, 'rb') as timef: > time = float(timef.read()) + 1 > except IOError: > time = 0.0 > with open(filename, 'wb') as timef: > timef.write(pycompat.bytestr(time)) > return (time, 0) > > procutil.getuser = mockgetuser > dateutil.makedate = mockmakedate > EOF $ cat >> $HGRCPATH << EOF > [extensions] > journal= > testmocks=`pwd`/testmocks.py > EOF Setup repo $ hg init repo $ cd repo Test empty journal $ hg journal previous locations of '.': no recorded locations $ hg journal foo previous locations of 'foo': no recorded locations Test that working copy changes are tracked $ echo a > a $ hg commit -Aqm a $ hg journal previous locations of '.': cb9a9f314b8b commit -Aqm a $ echo b > a $ hg commit -Aqm b $ hg journal previous locations of '.': 1e6c11564562 commit -Aqm b cb9a9f314b8b commit -Aqm a $ hg up 0 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg journal previous locations of '.': cb9a9f314b8b up 0 1e6c11564562 commit -Aqm b cb9a9f314b8b commit -Aqm a Test that bookmarks are tracked $ hg book -r tip bar $ hg journal bar previous locations of 'bar': 1e6c11564562 book -r tip bar $ hg book -f bar $ hg journal bar previous locations of 'bar': cb9a9f314b8b book -f bar 1e6c11564562 book -r tip bar $ hg up 1 files updated, 0 files merged, 0 files removed, 0 files unresolved updating bookmark bar $ hg journal bar previous locations of 'bar': 1e6c11564562 up cb9a9f314b8b book -f bar 1e6c11564562 book -r tip bar Test that bookmarks and working copy tracking is not mixed $ hg journal previous locations of '.': 1e6c11564562 up cb9a9f314b8b up 0 1e6c11564562 commit -Aqm b cb9a9f314b8b commit -Aqm a Test that you can list all entries as well as limit the list or filter on them $ hg book -r tip baz $ hg journal --all previous locations of the working copy and bookmarks: 1e6c11564562 baz book -r tip baz 1e6c11564562 bar up 1e6c11564562 . up cb9a9f314b8b bar book -f bar 1e6c11564562 bar book -r tip bar cb9a9f314b8b . up 0 1e6c11564562 . commit -Aqm b cb9a9f314b8b . commit -Aqm a $ hg journal --limit 2 previous locations of '.': 1e6c11564562 up cb9a9f314b8b up 0 $ hg journal bar previous locations of 'bar': 1e6c11564562 up cb9a9f314b8b book -f bar 1e6c11564562 book -r tip bar $ hg journal foo previous locations of 'foo': no recorded locations $ hg journal . previous locations of '.': 1e6c11564562 up cb9a9f314b8b up 0 1e6c11564562 commit -Aqm b cb9a9f314b8b commit -Aqm a $ hg journal "re:ba." previous locations of 're:ba.': 1e6c11564562 baz book -r tip baz 1e6c11564562 bar up cb9a9f314b8b bar book -f bar 1e6c11564562 bar book -r tip bar Test that verbose, JSON, template and commit output work $ hg journal --verbose --all previous locations of the working copy and bookmarks: 000000000000 -> 1e6c11564562 foobar baz 1970-01-01 00:00 +0000 book -r tip baz cb9a9f314b8b -> 1e6c11564562 foobar bar 1970-01-01 00:00 +0000 up cb9a9f314b8b -> 1e6c11564562 foobar . 1970-01-01 00:00 +0000 up 1e6c11564562 -> cb9a9f314b8b foobar bar 1970-01-01 00:00 +0000 book -f bar 000000000000 -> 1e6c11564562 foobar bar 1970-01-01 00:00 +0000 book -r tip bar 1e6c11564562 -> cb9a9f314b8b foobar . 1970-01-01 00:00 +0000 up 0 cb9a9f314b8b -> 1e6c11564562 foobar . 1970-01-01 00:00 +0000 commit -Aqm b 000000000000 -> cb9a9f314b8b foobar . 1970-01-01 00:00 +0000 commit -Aqm a $ hg journal --verbose -Tjson [ { "command": "up", "date": [5, 0], "name": ".", "newhashes": ["1e6c11564562b4ed919baca798bc4338bd299d6a"], "oldhashes": ["cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b"], "user": "foobar" }, { "command": "up 0", "date": [2, 0], "name": ".", "newhashes": ["cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b"], "oldhashes": ["1e6c11564562b4ed919baca798bc4338bd299d6a"], "user": "foobar" }, { "command": "commit -Aqm b", "date": [1, 0], "name": ".", "newhashes": ["1e6c11564562b4ed919baca798bc4338bd299d6a"], "oldhashes": ["cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b"], "user": "foobar" }, { "command": "commit -Aqm a", "date": [0, 0], "name": ".", "newhashes": ["cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b"], "oldhashes": ["0000000000000000000000000000000000000000"], "user": "foobar" } ] $ cat <<EOF >> $HGRCPATH > [templates] > j = "{oldhashes % '{node|upper}'} -> {newhashes % '{node|upper}'} > - user: {user} > - command: {command} > - date: {date|rfc3339date} > - newhashes: {newhashes} > - oldhashes: {oldhashes} > " > EOF $ hg journal -Tj -l1 previous locations of '.': CB9A9F314B8B07BA71012FCDBC544B5A4D82FF5B -> 1E6C11564562B4ED919BACA798BC4338BD299D6A - user: foobar - command: up - date: 1970-01-01T00:00:05+00:00 - newhashes: 1e6c11564562b4ed919baca798bc4338bd299d6a - oldhashes: cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b $ hg journal --commit previous locations of '.': 1e6c11564562 up changeset: 1:1e6c11564562 bookmark: bar bookmark: baz tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: b cb9a9f314b8b up 0 changeset: 0:cb9a9f314b8b user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: a 1e6c11564562 commit -Aqm b changeset: 1:1e6c11564562 bookmark: bar bookmark: baz tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: b cb9a9f314b8b commit -Aqm a changeset: 0:cb9a9f314b8b user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: a Test for behaviour on unexpected storage version information $ printf '42\0' > .hg/namejournal $ hg journal previous locations of '.': abort: unknown journal file version '42' [255] $ hg book -r tip doomed unsupported journal file version '42'