Mercurial > hg
view contrib/memory.py @ 47682:78f7f0d490ee
dirstate-v2: Move fixed-size tree metadata into the docket file
Before this changeset, the dirstate-v2 data file contained not only nodes
and paths that may be reused when appending to an existing file,
but also some fixed-size metadata that applies to the entire tree
and was added at the end of the data file for every append.
This moves that metadata into the docket file, so that repeated "append"
operations without meaningful changes don’t actually need to grow any file.
Differential Revision: https://phab.mercurial-scm.org/D11098
author | Simon Sapin <simon.sapin@octobus.net> |
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date | Thu, 15 Jul 2021 23:02:17 +0200 |
parents | d4ba4d51f85f |
children | 6000f5b25c9b |
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# memory.py - track memory usage # # Copyright 2009 Olivia Mackall <olivia@selenic.com> and others # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. '''helper extension to measure memory usage Reads current and peak memory usage from ``/proc/self/status`` and prints it to ``stderr`` on exit. ''' from __future__ import absolute_import def memusage(ui): """Report memory usage of the current process.""" result = {'peak': 0, 'rss': 0} with open('/proc/self/status', 'r') as status: # This will only work on systems with a /proc file system # (like Linux). for line in status: parts = line.split() key = parts[0][2:-1].lower() if key in result: result[key] = int(parts[1]) ui.write_err( ", ".join( ["%s: %.1f MiB" % (k, v / 1024.0) for k, v in result.iteritems()] ) + "\n" ) def extsetup(ui): ui.atexit(memusage, ui)