Mercurial > hg > mercurial-crew-with-dirclash
view tests/test-convert-hg-sink @ 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 | 2dbd750b3ddd |
children |
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#!/bin/sh echo "[extensions]" >> $HGRCPATH echo "hgext.convert=" >> $HGRCPATH hg init orig cd orig echo foo > foo echo bar > bar hg ci -qAm 'add foo and bar' -d '0 0' hg rm foo hg ci -m 'remove foo' -d '0 0' mkdir foo echo file > foo/file hg ci -qAm 'add foo/file' -d '0 0' hg tag -d '0 0' some-tag hg log cd .. hg convert orig new 2>&1 | grep -v 'subversion python bindings could not be loaded' cd new hg out ../orig echo '% dirstate should be empty:' hg debugstate hg parents -q hg up -C hg copy bar baz echo '% put something in the dirstate:' hg debugstate > debugstate grep baz debugstate echo '% add a new revision in the original repo' cd ../orig echo baz > baz hg ci -qAm 'add baz' cd .. hg convert orig new 2>&1 | grep -v 'subversion python bindings could not be loaded' cd new hg out ../orig echo '% dirstate should be the same (no output below):' hg debugstate > new-debugstate diff debugstate new-debugstate echo '% no copies' hg up -C hg debugrename baz