Mercurial > hg > mercurial-crew-with-dirclash
view tests/test-flags @ 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 | 0ac7fee4f024 |
| children |
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#!/bin/sh -e umask 027 mkdir test1 cd test1 hg init touch a b hg add a b hg ci -m "added a b" -d "1000000 0" cd .. hg clone test1 test3 mkdir test2 cd test2 hg init hg pull ../test1 hg co chmod +x a hg ci -m "chmod +x a" -d "1000000 0" echo % the changelog should mention file a: hg tip --template '#files#\n' cd ../test1 echo 123 >>a hg ci -m "a updated" -d "1000000 0" hg pull ../test2 hg heads hg history hg -v merge cd ../test3 echo 123 >>b hg ci -m "b updated" -d "1000000 0" hg pull ../test2 hg heads hg history hg -v merge ls -l ../test[123]/a > foo cut -b 1-10 < foo hg debugindex .hg/store/data/a.i hg debugindex ../test2/.hg/store/data/a.i hg debugindex ../test1/.hg/store/data/a.i