Mercurial > hg > mercurial-crew-with-dirclash
view tests/test-bheads @ 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 | 8e503fa54d2d |
children |
line wrap: on
line source
#!/bin/sh hg init a cd a echo 'root' >root hg add root hg commit -d '0 0' -u test -m "Adding root node" hg heads echo '-------' hg heads . echo '=======' echo 'a' >a hg add a hg branch a hg commit -d '1 0' -u test -m "Adding a branch" hg heads echo '-------' hg heads . echo '=======' hg update -C 0 echo 'b' >b hg add b hg branch b hg commit -d '2 0' -u test -m "Adding b branch" hg heads echo '-------' hg heads . echo '=======' echo 'bh1' >bh1 hg add bh1 hg commit -d '3 0' -u test -m "Adding b branch head 1" hg heads echo '-------' hg heads . echo '=======' hg update -C 2 echo 'bh2' >bh2 hg add bh2 hg commit -d '4 0' -u test -m "Adding b branch head 2" hg heads echo '-------' hg heads . echo '=======' hg update -C 2 echo 'bh3' >bh3 hg add bh3 hg commit -d '5 0' -u test -m "Adding b branch head 3" hg heads echo '-------' hg heads . echo '=======' hg merge 4 hg commit -d '6 0' -u test -m "Merging b branch head 2 and b branch head 3" hg heads echo '-------' hg heads . echo '=======' echo 'c' >c hg add c hg branch c hg commit -d '7 0' -u test -m "Adding c branch" hg heads echo '-------' hg heads . echo '=======' hg heads -r 3 . echo $? echo '-------' hg heads -r 2 . echo $? echo '-------' hg update -C 4 echo $? echo '-------' hg heads -r 3 . echo $? echo '-------' hg heads -r 2 . echo $? echo '-------' hg heads -r 7 . echo $? echo '=======' for i in 0 1 2 3 4 5 6 7; do hg update -C "$i" hg heads echo '-------' hg heads . echo '-------' done echo '=======' for i in a b c z; do hg heads "$i" echo '-------' done echo '=======' hg heads 0 1 2 3 4 5 6 7