perf: clear vfs audit_cache before each run
When generating a stream clone, we spend a large amount of time auditing path.
Before this changes, the first run was warming the vfs cache for the other
runs, leading to a large runtime difference and a "faulty" reported timing for
the operation.
We now clear this important cache between run to get a more realistic timing.
Below are some example of median time change when clearing these cases. The
maximum time for a run did not changed significantly.
### data-env-vars.name = mozilla-central-2018-08-01-zstd-sparse-revlog
# benchmark.name = hg.perf.exchange.stream.generate
# bin-env-vars.hg.flavor = default
# bin-env-vars.hg.py-re2-module = default
# benchmark.variants.version = latest
no-clearing: 17.289905
cache-clearing: 21.587965 (+24.86%, +4.30)
## data-env-vars.name = mozilla-central-2024-03-22-zstd-sparse-revlog
no-clearing: 32.670748
cache-clearing: 40.467095 (+23.86%, +7.80)
## data-env-vars.name = mozilla-try-2019-02-18-zstd-sparse-revlog
no-clearing: 37.838858
cache-clearing: 46.072749 (+21.76%, +8.23)
## data-env-vars.name = mozilla-unified-2024-03-22-zstd-sparse-revlog
no-clearing: 32.969395
cache-clearing: 39.646209 (+20.25%, +6.68)
In addition, this significantly reduce the timing difference between the
performance command, from the perf extensions and a `real `hg bundle` call
producing a stream bundle. Some significant differences remain especially on
the "mozilla-try" repositories, but they are now smaller.
Note that some of that difference will actually not be
attributable to the stream generation (like maybe phases or branch map
computation).
Below are some benchmarks done on a currently draft changeset fixing some
unrelated slowness in `hg bundle` (34a78972af409d1ff37c29e60f6ca811ad1a457d)
### data-env-vars.name = mozilla-central-2018-08-01-zstd-sparse-revlog
# bin-env-vars.hg.flavor = default
# bin-env-vars.hg.py-re2-module = default
hg.perf.exchange.stream.generate: 21.587965
hg.command.bundle: 24.301799 (+12.57%, +2.71)
## data-env-vars.name = mozilla-central-2024-03-22-zstd-sparse-revlog
hg.perf.exchange.stream.generate: 40.467095
hg.command.bundle: 44.831317 (+10.78%, +4.36)
## data-env-vars.name = mozilla-unified-2024-03-22-zstd-sparse-revlog
hg.perf.exchange.stream.generate: 39.646209
hg.command.bundle: 45.395258 (+14.50%, +5.75)
## data-env-vars.name = mozilla-try-2019-02-18-zstd-sparse-revlog
hg.perf.exchange.stream.generate: 46.072749
hg.command.bundle: 55.882608 (+21.29%, +9.81)
## data-env-vars.name = mozilla-try-2023-03-22-zlib-general-delta
hg.perf.exchange.stream.generate: 334.716708
hg.command.bundle: 377.856767 (+12.89%, +43.14)
## data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog
hg.perf.exchange.stream.generate: 302.972301
hg.command.bundle: 326.098755 (+7.63%, +23.13)
# record.py
#
# Copyright 2007 Bryan O'Sullivan <bos@serpentine.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
'''commands to interactively select changes for commit/qrefresh (DEPRECATED)
The feature provided by this extension has been moved into core Mercurial as
:hg:`commit --interactive`.'''
from mercurial.i18n import _
from mercurial import (
cmdutil,
commands,
error,
extensions,
registrar,
)
cmdtable = {}
command = registrar.command(cmdtable)
# Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
# extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
# be specifying the version(s) of Mercurial they are tested with, or
# leave the attribute unspecified.
testedwith = b'ships-with-hg-core'
@command(
b"record",
# same options as commit + white space diff options
[c for c in commands.table[b'commit|ci'][1][:] if c[1] != b"interactive"]
+ cmdutil.diffwsopts,
_(b'hg record [OPTION]... [FILE]...'),
helpcategory=command.CATEGORY_COMMITTING,
)
def record(ui, repo, *pats, **opts):
"""interactively select changes to commit
If a list of files is omitted, all changes reported by :hg:`status`
will be candidates for recording.
See :hg:`help dates` for a list of formats valid for -d/--date.
If using the text interface (see :hg:`help config`),
you will be prompted for whether to record changes to each
modified file, and for files with multiple changes, for each
change to use. For each query, the following responses are
possible::
y - record this change
n - skip this change
e - edit this change manually
s - skip remaining changes to this file
f - record remaining changes to this file
d - done, skip remaining changes and files
a - record all changes to all remaining files
q - quit, recording no changes
? - display help
This command is not available when committing a merge."""
if not ui.interactive():
raise error.Abort(
_(b'running non-interactively, use %s instead') % b'commit'
)
opts["interactive"] = True
overrides = {(b'experimental', b'crecord'): False}
with ui.configoverride(overrides, b'record'):
return commands.commit(ui, repo, *pats, **opts)
def qrefresh(origfn, ui, repo, *pats, **opts):
if not opts['interactive']:
return origfn(ui, repo, *pats, **opts)
mq = extensions.find(b'mq')
def committomq(ui, repo, *pats, **opts):
# At this point the working copy contains only changes that
# were accepted. All other changes were reverted.
# We can't pass *pats here since qrefresh will undo all other
# changed files in the patch that aren't in pats.
mq.refresh(ui, repo, **opts)
# backup all changed files
cmdutil.dorecord(
ui, repo, committomq, None, True, cmdutil.recordfilter, *pats, **opts
)
# This command registration is replaced during uisetup().
@command(
b'qrecord',
[],
_(b'hg qrecord [OPTION]... PATCH [FILE]...'),
helpcategory=command.CATEGORY_COMMITTING,
inferrepo=True,
)
def qrecord(ui, repo, patch, *pats, **opts):
"""interactively record a new patch
See :hg:`help qnew` & :hg:`help record` for more information and
usage.
"""
return _qrecord(b'qnew', ui, repo, patch, *pats, **opts)
def _qrecord(cmdsuggest, ui, repo, patch, *pats, **opts):
try:
mq = extensions.find(b'mq')
except KeyError:
raise error.Abort(_(b"'mq' extension not loaded"))
repo.mq.checkpatchname(patch)
def committomq(ui, repo, *pats, **opts):
opts['checkname'] = False
mq.new(ui, repo, patch, *pats, **opts)
overrides = {(b'experimental', b'crecord'): False}
with ui.configoverride(overrides, b'record'):
cmdutil.checkunfinished(repo)
cmdutil.dorecord(
ui,
repo,
committomq,
cmdsuggest,
False,
cmdutil.recordfilter,
*pats,
**opts
)
def qnew(origfn, ui, repo, patch, *args, **opts):
if opts['interactive']:
return _qrecord(None, ui, repo, patch, *args, **opts)
return origfn(ui, repo, patch, *args, **opts)
def uisetup(ui):
try:
mq = extensions.find(b'mq')
except KeyError:
return
cmdtable[b"qrecord"] = (
qrecord,
# same options as qnew, but copy them so we don't get
# -i/--interactive for qrecord and add white space diff options
mq.cmdtable[b'qnew'][1][:] + cmdutil.diffwsopts,
_(b'hg qrecord [OPTION]... PATCH [FILE]...'),
)
_wrapcmd(b'qnew', mq.cmdtable, qnew, _(b"interactively record a new patch"))
_wrapcmd(
b'qrefresh',
mq.cmdtable,
qrefresh,
_(b"interactively select changes to refresh"),
)
def _wrapcmd(cmd, table, wrapfn, msg):
entry = extensions.wrapcommand(table, cmd, wrapfn)
entry[1].append((b'i', b'interactive', None, msg))