perf: add --clear-revlog flag to branchmapload
Having the changelog index already loaded when loading the branchmap can have a
large impact on performance.
Example runs (large private repository):
hg perfbranchmapload -f base
! wall 0.116722 comb 0.120000 user 0.110000 sys 0.010000 (best of 59)
hg perfbranchmapload -f base --clear-revlogs
! wall 0.258246 comb 0.230000 user 0.220000 sys 0.010000 (best of 31)
--- a/contrib/perf.py Fri Nov 23 06:32:28 2018 +0100
+++ b/contrib/perf.py Fri Nov 23 06:32:32 2018 +0100
@@ -2232,10 +2232,13 @@
@command(b'perfbranchmapload', [
(b'f', b'filter', b'', b'Specify repoview filter'),
(b'', b'list', False, b'List brachmap filter caches'),
+ (b'', b'clear-revlogs', False, b'refresh changelog and manifest'),
+
] + formatteropts)
def perfbranchmapload(ui, repo, filter=b'', list=False, **opts):
"""benchmark reading the branchmap"""
opts = _byteskwargs(opts)
+ clearrevlogs = opts[b'clear_revlogs']
if list:
for name, kind, st in repo.cachevfs.readdir(stat=True):
@@ -2253,9 +2256,12 @@
raise error.Abort(b'No branchmap cached for %s repo'
% (filter or b'unfiltered'))
timer, fm = gettimer(ui, opts)
+ def setup():
+ if clearrevlogs:
+ clearchangelog(repo)
def bench():
branchmap.read(repo)
- timer(bench)
+ timer(bench, setup=setup)
fm.end()
@command(b'perfloadmarkers')