Mercurial > hg
view tests/test-changelog-exec.t @ 30289:1f92056c4066
revlog: optimize _chunkraw when startrev==endrev
In many cases, _chunkraw() is called with startrev==endrev. When
this is true, we can avoid an extra index lookup and some other
minor operations.
On the mozilla-unified repo, `hg perfrevlogchunks -c` says this
has the following impact:
! read w/ reused fd
! wall 0.371846 comb 0.370000 user 0.350000 sys 0.020000 (best of 27)
! wall 0.337930 comb 0.330000 user 0.300000 sys 0.030000 (best of 30)
! read batch w/ reused fd
! wall 0.014952 comb 0.020000 user 0.000000 sys 0.020000 (best of 197)
! wall 0.014866 comb 0.010000 user 0.000000 sys 0.010000 (best of 196)
So, we've gone from ~25x slower than batch to ~22.5x slower.
At this point, there's probably not much else we can do except
implement an optimized function in the index itself, including in C.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Sun, 23 Oct 2016 10:40:33 -0700 |
parents | e6e7ef68c879 |
children | 009d0283de5f |
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#require execbit b51a8138292a introduced a regression where we would mention in the changelog executable files added by the second parent of a merge. Test that that doesn't happen anymore $ hg init repo $ cd repo $ echo foo > foo $ hg ci -qAm 'add foo' $ echo bar > bar $ chmod +x bar $ hg ci -qAm 'add bar' manifest of p2: $ hg manifest bar foo $ hg up -qC 0 $ echo >> foo $ hg ci -m 'change foo' created new head manifest of p1: $ hg manifest foo $ hg merge 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ chmod +x foo $ hg ci -m 'merge' this should not mention bar but should mention foo: $ hg tip -v changeset: 3:c53d17ff3380 tag: tip parent: 2:ed1b79f46b9a parent: 1:d394a8db219b user: test date: Thu Jan 01 00:00:00 1970 +0000 files: foo description: merge $ hg debugindex bar rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 5 ..... 1 b004912a8510 000000000000 000000000000 (re) $ cd ..