tags-cache: skip the filternode step if we are not going to use it
When warming the hgtagsfnodescache, we don't need the actual result, so we can
simply skip the part that "filter" fnode we read from the cache. So provide a
quite visible speed up to the top level `hg debugupdatecache` function.
### data-env-vars.name = mozilla-try-2023-03-22-zstd-sparse-revlog
# benchmark.name = hg.debug.debug-update-cache
# bin-env-vars.hg.flavor = default
# bin-env-vars.hg.py-re2-module = default
# benchmark.variants.pre-state = warm
before: 19.947581
after: 18.916804 (-5.17%, -1.03)
In this test, we want to test LFS bundle application on both LFS and non-LFS
repos.
To make it more interesting, the file revisions will contain hg filelog
metadata ('\1\n'). The bundle will have 1 file revision overlapping with the
destination repo.
# rev 1 2 3
# repo: yes yes no
# bundle: no (base) yes yes (deltabase: 2 if possible)
It is interesting because rev 2 could have been stored as LFS in the repo, and
non-LFS in the bundle; or vice-versa.
Init
$ cat >> $HGRCPATH << EOF
> [extensions]
> lfs=
> drawdag=$TESTDIR/drawdag.py
> [lfs]
> url=file:$TESTTMP/lfs-remote
> EOF
Helper functions
$ commitxy() {
> hg debugdrawdag "$@" <<'EOS'
> Y # Y/X=\1\nAAAA\nE\nF
> | # Y/Y=\1\nAAAA\nG\nH
> X # X/X=\1\nAAAA\nC\n
> # X/Y=\1\nAAAA\nD\n
> EOS
> }
$ commitz() {
> hg debugdrawdag "$@" <<'EOS'
> Z # Z/X=\1\nAAAA\nI\n
> | # Z/Y=\1\nAAAA\nJ\n
> | # Z/Z=\1\nZ
> Y
> EOS
> }
$ enablelfs() {
> cat >> .hg/hgrc <<EOF
> [lfs]
> track=all()
> EOF
> }
Generate bundles
$ for i in normal lfs; do
> NAME=src-$i
> hg init $TESTTMP/$NAME
> cd $TESTTMP/$NAME
> [ $i = lfs ] && enablelfs
> commitxy
> commitz
> hg bundle -q --base X -r Y+Z $TESTTMP/$NAME.bundle
> SRCNAMES="$SRCNAMES $NAME"
> done
Prepare destination repos
$ for i in normal lfs; do
> NAME=dst-$i
> hg init $TESTTMP/$NAME
> cd $TESTTMP/$NAME
> [ $i = lfs ] && enablelfs
> commitxy
> DSTNAMES="$DSTNAMES $NAME"
> done
Apply bundles
$ for i in $SRCNAMES; do
> for j in $DSTNAMES; do
> echo ---- Applying $i.bundle to $j ----
> cp -R $TESTTMP/$j $TESTTMP/tmp-$i-$j
> cd $TESTTMP/tmp-$i-$j
> if hg unbundle $TESTTMP/$i.bundle -q 2>/dev/null; then
> hg verify -q && echo OK
> else
> echo CRASHED
> fi
> done
> done
---- Applying src-normal.bundle to dst-normal ----
OK
---- Applying src-normal.bundle to dst-lfs ----
OK
---- Applying src-lfs.bundle to dst-normal ----
OK
---- Applying src-lfs.bundle to dst-lfs ----
OK
Hint if the cache location cannot be inferred from the environment
#if windows
$ unset LOCALAPPDATA
$ unset APPDATA
$ HGRCPATH= hg config lfs --source
abort: unknown lfs usercache location
(define LOCALAPPDATA or APPDATA in the environment, or set lfs.usercache)
[255]
#endif
#if osx
$ unset HOME
$ HGRCPATH= hg config lfs --source
abort: unknown lfs usercache location
(define HOME in the environment, or set lfs.usercache)
[255]
#endif
#if no-windows no-osx
$ unset XDG_CACHE_HOME
$ unset HOME
$ HGRCPATH= hg config lfs --source
abort: unknown lfs usercache location
(define XDG_CACHE_HOME or HOME in the environment, or set lfs.usercache)
[255]
#endif