Mercurial > hg > mercurial-crew-with-dirclash
view tests/test-convert-svn.out @ 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 | d7d395fb7cd5 |
| children | 91a522a69c13 |
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% initial svn import Adding t/a Committed revision 1. % update svn repository A t2/a Checked out revision 1. A b Sending a Adding b Transmitting file data .. Committed revision 2. % convert to hg once assuming destination trunk-hg initializing destination trunk-hg repository scanning source... sorting... converting... 1 init 0 changea % update svn repository again Sending a Sending b Transmitting file data .. Committed revision 3. % test incremental conversion assuming destination trunk-hg destination trunk-hg is a Mercurial repository scanning source... sorting... converting... 0 changeb % test filemap initializing destination fmap repository scanning source... sorting... converting... 2 init 1 changea 0 changeb o 1 changeb files: b | o 0 changea files: b