Mercurial > hg > mercurial-crew-with-dirclash
view tests/test-convert-hg-source @ 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 | 22ddde515fda |
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 bar' -d '0 0' echo >> foo hg ci -m 'change foo' -d '1 0' hg up -qC 0 hg copy --after --force foo bar hg copy foo baz hg ci -m 'make bar and baz copies of foo' -d '2 0' hg merge hg ci -m 'merge local copy' -d '3 0' hg up -C 1 hg merge 2 hg ci -m 'merge remote copy' -d '4 0' cd .. hg convert --datesort orig new 2>&1 | grep -v 'subversion python bindings could not be loaded' cd new hg out ../orig true