Mercurial > hg
view tests/test-empty-file.t @ 25191:08d1ef09ed37
revset: optimize not public revset
This patvh speeds up the computation of the not public() changeset
and incidentally speed up the computation of divergents() changeset on our big
repo by 100x from 50% to 0.5% of the time spent in smartlog with evolve.
In this patch we optimize not public() to _notpublic() (new revset) and use
the work on phaseset (from the previous commit) to be able to compute
_notpublic() quickly.
We use a non-lazy approach making the assumption the number of notpublic
change will not be in the order of magnitude of the repo size. Adopting a
lazy approach gives a speedup of 5x (vs 100x) only due to the overhead of the
code for lazy generation.
author | Laurent Charignon <lcharignon@fb.com> |
---|---|
date | Fri, 24 Apr 2015 14:30:30 -0700 |
parents | f2719b387380 |
children |
line wrap: on
line source
$ hg init a $ cd a $ touch empty1 $ hg add empty1 $ hg commit -m 'add empty1' $ touch empty2 $ hg add empty2 $ hg commit -m 'add empty2' $ hg up -C 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ touch empty3 $ hg add empty3 $ hg commit -m 'add empty3' created new head $ hg heads changeset: 2:a1cb177e0d44 tag: tip parent: 0:1e1d9c4e5b64 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: add empty3 changeset: 1:097d2b0e17f6 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: add empty2 $ hg merge 1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) Before changeset 05257fd28591, we didn't notice the empty file that came from rev 1: $ hg status M empty2 $ hg commit -m merge $ hg manifest --debug tip b80de5d138758541c5f05265ad144ab9fa86d1db 644 empty1 b80de5d138758541c5f05265ad144ab9fa86d1db 644 empty2 b80de5d138758541c5f05265ad144ab9fa86d1db 644 empty3 $ cd ..