Mercurial > hg
view contrib/memory.py @ 26399:1f0e78f8f55f
bundlerepo: let bundle repo look in the _mancache
When looking up a base revision, we were ignoring the contents that were already
available in the manifest's _mancache. This patch allows us to use that data
instead of reading from the revlog.
This is useful in our pushrebase extension (which allows rebasing on the server
side during a push) because it allows us to prefetch the bundle base manifest
before aquiring the repo lock (1 second saving), which means doing less work inside the lock,
which means a 20% higher commit rate.
author | Durham Goode <durham@fb.com> |
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date | Mon, 28 Sep 2015 10:27:36 -0700 |
parents | 08a0f04b56bd |
children | 3e0d27d298b7 |
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# memory.py - track memory usage # # Copyright 2009 Matt Mackall <mpm@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. ''' import atexit def memusage(ui): """Report memory usage of the current process.""" status = None result = {'peak': 0, 'rss': 0} try: # This will only work on systems with a /proc file system # (like Linux). status = open('/proc/self/status', 'r') for line in status: parts = line.split() key = parts[0][2:-1].lower() if key in result: result[key] = int(parts[1]) finally: if status is not None: status.close() ui.write_err(", ".join(["%s: %.1f MiB" % (key, value / 1024.0) for key, value in result.iteritems()]) + "\n") def extsetup(ui): atexit.register(memusage, ui)