##// END OF EJS Templates
memory-usage: fix `hg log --follow --rev R F` space complexity...
memory-usage: fix `hg log --follow --rev R F` space complexity When running `hg log --follow --rev REVS FILES`, the log code will walk the history of all FILES starting from the file revisions that exists in each REVS. Before doing so, it looks if the files actually exists in the target revisions. To do so, it opens the manifest of each revision in REVS to look up if we find the associated items in FILES. Before this changeset this was done in a way that created a changectx for each target revision, keeping them in memory while we look into each file. If the set of REVS is large, this means keeping the manifest for each entry in REVS in memory. That can be largeā€¦ if REV is in the form `::X`, this can quickly become huge and saturate the memory. We have seen usage allocating 2GB per second until memory runs out. So this changeset invert the two loop so that only one revision is kept in memory during the operation. This solve the memory explosion issue.

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r37195:68ee6182 default
r50517:dcb2581e stable
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_compat.py
60 lines | 1.7 KiB | text/x-python | PythonLexer
##############################################################################
#
# Copyright (c) 2006 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""Basic components support
"""
from __future__ import absolute_import
import sys
import types
if sys.version_info[0] < 3:
def _normalize_name(name):
if isinstance(name, basestring):
return unicode(name)
raise TypeError("name must be a regular or unicode string")
CLASS_TYPES = (type, types.ClassType)
STRING_TYPES = (basestring,)
_BUILTINS = '__builtin__'
PYTHON3 = False
PYTHON2 = True
else:
def _normalize_name(name):
if isinstance(name, bytes):
name = str(name, 'ascii')
if isinstance(name, str):
return name
raise TypeError("name must be a string or ASCII-only bytes")
CLASS_TYPES = (type,)
STRING_TYPES = (str,)
_BUILTINS = 'builtins'
PYTHON3 = True
PYTHON2 = False
def _skip_under_py3k(test_method):
import unittest
return unittest.skipIf(sys.version_info[0] >= 3, "Only on Python 2")(test_method)
def _skip_under_py2(test_method):
import unittest
return unittest.skipIf(sys.version_info[0] < 3, "Only on Python 3")(test_method)