Mercurial > hg
diff contrib/perf.py @ 18304:9b6ae29d4801
perf: add perfbranchmap command
The command times the update of a branchmap from its nearest subset
or from scratch.
author | Pierre-Yves David <pierre-yves.david@logilab.fr> |
---|---|
date | Fri, 11 Jan 2013 18:39:43 +0100 |
parents | f5ed27c51995 |
children | 3e92772d5383 |
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--- a/contrib/perf.py Fri Jan 11 20:34:54 2013 +0100 +++ b/contrib/perf.py Fri Jan 11 18:39:43 2013 +0100 @@ -2,7 +2,7 @@ '''helper extension to measure performance''' from mercurial import cmdutil, scmutil, util, match, commands, obsolete -from mercurial import repoview +from mercurial import repoview, branchmap import time, os, sys cmdtable = {} @@ -309,3 +309,58 @@ for name in allfilter: timer(getfiltered(name), title=name) + +@command('perfbranchmap', + [('f', 'full', False, + 'Includes build time of subset'), + ]) +def perfbranchmap(ui, repo, full=False): + """benchmark the update of a branchmap + + This benchmarks the full repo.branchmap() call with read and write disabled + """ + def getbranchmap(filtername): + """generate a benchmark function for the filtername""" + if filtername is None: + view = repo + else: + view = repo.filtered(filtername) + def d(): + if full: + view._branchcaches.clear() + else: + view._branchcaches.pop(filtername, None) + view.branchmap() + return d + # add filter in smaller subset to bigger subset + possiblefilters = set(repoview.filtertable) + allfilters = [] + while possiblefilters: + for name in possiblefilters: + subset = repoview.subsettable.get(name) + if subset not in possiblefilters: + break + else: + assert False, 'subset cycle %s!' % possiblefilters + allfilters.append(name) + possiblefilters.remove(name) + + # warm the cache + if not full: + for name in allfilters: + repo.filtered(name).branchmap() + # add unfiltered + allfilters.append(None) + oldread = branchmap.read + oldwrite = branchmap.branchcache.write + try: + branchmap.read = lambda repo: None + branchmap.write = lambda repo: None + for name in allfilters: + timer(getbranchmap(name), title=str(name)) + finally: + branchmap.read = oldread + branchmap.branchcache.write = oldwrite + + +