Mercurial > hg > mercurial-crew-with-dirclash
view tests/test-convert-cvs.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 | 6874368120dc |
| children |
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% create cvs repository % create source directory % import source directory N src/a N src/b/c No conflicts created by this import % checkout source directory U src/a U src/b/c % commit a new revision changing b/c checking in src/b/c,v % convert fresh repo initializing destination src-hg repository connecting to cvsrepo scanning source... sorting... converting... 2 Initial revision 1 import 0 ci0 updating tags a c c % convert fresh repo with --filemap initializing destination src-filemap repository connecting to cvsrepo scanning source... sorting... converting... 2 Initial revision 1 import rolling back last transaction 0 ci0 updating tags c c 2 update tags files: .hgtags 1 ci0 files: b/c 0 Initial revision files: b/c % commit new file revisions checking in src/a,v checking in src/b/c,v % convert again destination src-hg is a Mercurial repository connecting to cvsrepo scanning source... sorting... converting... 0 ci1 a a c c c % convert again with --filemap destination src-filemap is a Mercurial repository connecting to cvsrepo scanning source... sorting... converting... 0 ci1 c c c 3 ci1 files: b/c 2 update tags files: .hgtags 1 ci0 files: b/c 0 Initial revision files: b/c