revlog: allow tuning of the chunk cache size (via format.chunkcachesize)
Running perfmoonwalk on the Mercurial repo (with almost 20,000 changesets) on
Mac OS X with an SSD, before this change:
$ hg --config format.chunkcachesize=1024 perfmoonwalk
! wall 2.022021 comb 2.030000 user 1.970000 sys 0.060000 (best of 5)
(16,154 cache hits, 3,840 misses.)
$ hg --config format.chunkcachesize=4096 perfmoonwalk
! wall 1.901006 comb 1.900000 user 1.880000 sys 0.020000 (best of 6)
(19,003 hits, 991 misses.)
$ hg --config format.chunkcachesize=16384 perfmoonwalk
! wall 1.802775 comb 1.800000 user 1.800000 sys 0.000000 (best of 6)
(19,746 hits, 248 misses.)
$ hg --config format.chunkcachesize=32768 perfmoonwalk
! wall 1.818545 comb 1.810000 user 1.810000 sys 0.000000 (best of 6)
(19,870 hits, 124 misses.)
$ hg --config format.chunkcachesize=65536 perfmoonwalk
! wall 1.801350 comb 1.810000 user 1.800000 sys 0.010000 (best of 6)
(19,932 hits, 62 misses.)
$ hg --config format.chunkcachesize=131072 perfmoonwalk
! wall 1.805879 comb 1.820000 user 1.810000 sys 0.010000 (best of 6)
(19,963 hits, 31 misses.)
We may want to change the default size in the future based on testing and
user feedback.
This test tries to exercise the ssh functionality with a dummy script
$ checknewrepo()
> {
> name=$1
> if [ -d "$name"/.hg/store ]; then
> echo store created
> fi
> if [ -f "$name"/.hg/00changelog.i ]; then
> echo 00changelog.i created
> fi
> cat "$name"/.hg/requires
> }
creating 'local'
$ hg init local
$ checknewrepo local
store created
00changelog.i created
dotencode
fncache
revlogv1
store
$ echo this > local/foo
$ hg ci --cwd local -A -m "init"
adding foo
test custom revlog chunk cache sizes
$ hg --config format.chunkcachesize=0 log -R local -pv
abort: revlog chunk cache size 0 is not greater than 0!
[255]
$ hg --config format.chunkcachesize=1023 log -R local -pv
abort: revlog chunk cache size 1023 is not a power of 2!
[255]
$ hg --config format.chunkcachesize=1024 log -R local -pv
changeset: 0:08b9e9f63b32
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
files: foo
description:
init
diff -r 000000000000 -r 08b9e9f63b32 foo
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/foo Thu Jan 01 00:00:00 1970 +0000
@@ -0,0 +1,1 @@
+this
creating repo with format.usestore=false
$ hg --config format.usestore=false init old
$ checknewrepo old
revlogv1
creating repo with format.usefncache=false
$ hg --config format.usefncache=false init old2
$ checknewrepo old2
store created
00changelog.i created
revlogv1
store
creating repo with format.dotencode=false
$ hg --config format.dotencode=false init old3
$ checknewrepo old3
store created
00changelog.i created
fncache
revlogv1
store
test failure
$ hg init local
abort: repository local already exists!
[255]
init+push to remote2
$ hg init -e "python \"$TESTDIR/dummyssh\"" ssh://user@dummy/remote2
$ hg incoming -R remote2 local
comparing with local
changeset: 0:08b9e9f63b32
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: init
$ hg push -R local -e "python \"$TESTDIR/dummyssh\"" ssh://user@dummy/remote2
pushing to ssh://user@dummy/remote2
searching for changes
remote: adding changesets
remote: adding manifests
remote: adding file changes
remote: added 1 changesets with 1 changes to 1 files
clone to remote1
$ hg clone -e "python \"$TESTDIR/dummyssh\"" local ssh://user@dummy/remote1
searching for changes
remote: adding changesets
remote: adding manifests
remote: adding file changes
remote: added 1 changesets with 1 changes to 1 files
init to existing repo
$ hg init -e "python \"$TESTDIR/dummyssh\"" ssh://user@dummy/remote1
abort: repository remote1 already exists!
abort: could not create remote repo!
[255]
clone to existing repo
$ hg clone -e "python \"$TESTDIR/dummyssh\"" local ssh://user@dummy/remote1
abort: repository remote1 already exists!
abort: could not create remote repo!
[255]
output of dummyssh
$ cat dummylog
Got arguments 1:user@dummy 2:hg init remote2
Got arguments 1:user@dummy 2:hg -R remote2 serve --stdio
Got arguments 1:user@dummy 2:hg -R remote2 serve --stdio
Got arguments 1:user@dummy 2:hg init remote1
Got arguments 1:user@dummy 2:hg -R remote1 serve --stdio
Got arguments 1:user@dummy 2:hg init remote1
Got arguments 1:user@dummy 2:hg init remote1
comparing repositories
$ hg tip -q -R local
0:08b9e9f63b32
$ hg tip -q -R remote1
0:08b9e9f63b32
$ hg tip -q -R remote2
0:08b9e9f63b32
check names for repositories (clashes with URL schemes, special chars)
$ for i in bundle file hg http https old-http ssh static-http "with space"; do
> printf "hg init \"$i\"... "
> hg init "$i"
> test -d "$i" -a -d "$i/.hg" && echo "ok" || echo "failed"
> done
hg init "bundle"... ok
hg init "file"... ok
hg init "hg"... ok
hg init "http"... ok
hg init "https"... ok
hg init "old-http"... ok
hg init "ssh"... ok
hg init "static-http"... ok
hg init "with space"... ok
#if eol-in-paths
/* " " is not a valid name for a directory on Windows */
$ hg init " "
$ test -d " "
$ test -d " /.hg"
#endif
creating 'local/sub/repo'
$ hg init local/sub/repo
$ checknewrepo local/sub/repo
store created
00changelog.i created
dotencode
fncache
revlogv1
store
prepare test of init of url configured from paths
$ echo '[paths]' >> $HGRCPATH
$ echo "somewhere = `pwd`/url from paths" >> $HGRCPATH
$ echo "elsewhere = `pwd`/another paths url" >> $HGRCPATH
init should (for consistency with clone) expand the url
$ hg init somewhere
$ checknewrepo "url from paths"
store created
00changelog.i created
dotencode
fncache
revlogv1
store
verify that clone also expand urls
$ hg clone somewhere elsewhere
updating to branch default
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ checknewrepo "another paths url"
store created
00changelog.i created
dotencode
fncache
revlogv1
store
clone bookmarks
$ hg -R local bookmark test
$ hg -R local bookmarks
* test 0:08b9e9f63b32
$ hg clone -e "python \"$TESTDIR/dummyssh\"" local ssh://user@dummy/remote-bookmarks
searching for changes
remote: adding changesets
remote: adding manifests
remote: adding file changes
remote: added 1 changesets with 1 changes to 1 files
$ hg -R remote-bookmarks bookmarks
test 0:08b9e9f63b32