Mercurial > hg > mercurial-crew-with-dirclash
view tests/test-impexp-branch @ 5451:0a43875677b1
revlog: break up compression of large deltas
Python's zlib apparently makes an internal copy of strings passed to
compress(). To avoid this, compress strings 1M at a time, then join
them at the end if the result would be smaller than the original.
For initial commits of large but compressible files, this cuts peak
memory usage nearly in half.
author | Matt Mackall <mpm@selenic.com> |
---|---|
date | Thu, 11 Oct 2007 00:46:54 -0500 |
parents | 32ea809e5bd1 |
children |
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#!/bin/sh cat >findbranch.py <<EOF import re, sys head_re = re.compile('^#(?:(?:\\s+([A-Za-z][A-Za-z0-9_]*)(?:\\s.*)?)|(?:\\s*))$') for line in sys.stdin: hmatch = head_re.match(line) if not hmatch: sys.exit(1) if hmatch.group(1) == 'Branch': sys.exit(0) sys.exit(1) EOF hg init a cd a echo "Rev 1" >rev hg add rev hg commit -m "No branch." hg branch abranch echo "Rev 2" >rev hg commit -m "With branch." if hg export 0 | python ../findbranch.py; then echo "Export of default branch revision has Branch header" 1>&2 exit 1 fi if hg export 1 | python ../findbranch.py; then : # Do nothing else echo "Export of branch revision is missing Branch header" 1>&2 exit 1 fi # Make sure import still works with branch information in patches. cd .. hg init b cd b hg -R ../a export 0 | hg import - hg -R ../a export 1 | hg import - cd .. rm -rf b hg init b cd b hg -R ../a export 0 | hg import --exact - hg -R ../a export 1 | hg import --exact -