view tests/test-push-r @ 2474:1e32e2fe8a67

Fix cold cache diff performance

cold cache diff performance has regressed in two ways.  localrepo.changes
has optimizations for diffing against the working dir parent that expect
node1 to be None.  commands.revpair() usage means that commands.dodiff()
never sends node1 == None.  This is fixed in localrepo.changes by checking
against the dirstate parents.

In the non-dirstate parents case, localrepo.changes does a loop comparing
files without first sorting the file names, leading to random access
across the disk.

#!/bin/sh

hg init test
cd test
cat >>afile <<EOF
0
EOF
hg add afile
hg commit -m "0.0"
cat >>afile <<EOF
1
EOF
hg commit -m "0.1"
cat >>afile <<EOF
2
EOF
hg commit -m "0.2"
cat >>afile <<EOF
3
EOF
hg commit -m "0.3"
hg update -C 0
cat >>afile <<EOF
1
EOF
hg commit -m "1.1"
cat >>afile <<EOF
2
EOF
hg commit -m "1.2"
cat >fred <<EOF
a line
EOF
cat >>afile <<EOF
3
EOF
hg add fred
hg commit -m "1.3"
hg mv afile adifferentfile
hg commit -m "1.3m"
hg update -C 3
hg mv afile anotherfile
hg commit -m "0.3m"
hg debugindex .hg/data/afile.i
hg debugindex .hg/data/adifferentfile.i
hg debugindex .hg/data/anotherfile.i
hg debugindex .hg/data/fred.i
hg debugindex .hg/00manifest.i
hg verify
cd ..
for i in 0 1 2 3 4 5 6 7 8; do
   mkdir test-"$i"
   hg --cwd test-"$i" init
   hg -R test push -r "$i" test-"$i"
   cd test-"$i"
   hg verify
   cd ..
done
cd test-8
hg pull ../test-7
hg verify