mirror of
https://github.com/facebook/sapling.git
synced 2024-10-12 01:39:21 +03:00
66f2e5f45e
Summary:
This hardcodes several perftweaks configs that have been enabled for major FB
repos for months:
[perftweaks]
disablebranchcache = True
disablebranchcache2 = True
disableresolvingbranches = True
disableupdatebranchcacheoncommit = True
Practically, this means the branchmap is now just `{'default': heads}`. (i.e.
there are no named branches other than `default`), and branchcache is removed
(i.e. `.hg/cache` does not exist without clindex or in-repo tags).
This diff only makes easy-to-verify logic changes by assuming the configs and
removing dead code. Things can be further cleaned up. They will be done by
upcoming changes.
Most test changes are due to the fact that `.hg/cache` is no longer created.
Reviewed By: singhsrb
Differential Revision: D14179858
fbshipit-source-id: 479f7427168eb1d9614a973e273a229e50f5620a
336 lines
7.6 KiB
Perl
336 lines
7.6 KiB
Perl
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#require hardlink
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$ cat > nlinks.py <<EOF
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> from __future__ import print_function
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> import sys
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> from edenscm.mercurial import util
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> for f in sorted(sys.stdin.readlines()):
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> f = f[:-1]
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> print(util.nlinks(f), f)
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> EOF
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$ nlinksdir()
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> {
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> find "$@" -type f | $PYTHON $TESTTMP/nlinks.py
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> }
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Some implementations of cp can't create hardlinks (replaces 'cp -al' on Linux):
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$ cat > linkcp.py <<EOF
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> from __future__ import absolute_import
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> import sys
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> from edenscm.mercurial import util
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> util.copyfiles(sys.argv[1], sys.argv[2], hardlink=True)
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> EOF
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$ linkcp()
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> {
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> $PYTHON $TESTTMP/linkcp.py $1 $2
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> }
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Prepare repo r1:
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$ hg init r1
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$ cd r1
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$ echo c1 > f1
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$ hg add f1
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$ hg ci -m0
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$ mkdir d1
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$ cd d1
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$ echo c2 > f2
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$ hg add f2
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$ hg ci -m1
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$ cd ../..
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$ nlinksdir r1/.hg/store
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1 r1/.hg/store/00changelog.i
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1 r1/.hg/store/00manifest.i
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1 r1/.hg/store/data/d1/f2.i
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1 r1/.hg/store/data/f1.i
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1 r1/.hg/store/fncache
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1 r1/.hg/store/phaseroots
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1 r1/.hg/store/requires
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1 r1/.hg/store/undo
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1 r1/.hg/store/undo.backup.fncache
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1 r1/.hg/store/undo.backupfiles
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1 r1/.hg/store/undo.phaseroots
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Create hardlinked clone r2:
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$ hg clone -U --debug r1 r2 --config progress.debug=true
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progress: linking: 1
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progress: linking: 2
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progress: linking: 3
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progress: linking: 4
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progress: linking: 5
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progress: linking: 6
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progress: linking: 7
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progress: linking (end)
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linked 7 files
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Create non-hardlinked clone r3:
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$ hg clone --pull r1 r3
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requesting all changes
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adding changesets
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adding manifests
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adding file changes
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added 2 changesets with 2 changes to 2 files
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new changesets 40d85e9847f2:7069c422939c
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updating to branch default
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2 files updated, 0 files merged, 0 files removed, 0 files unresolved
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Repos r1 and r2 should now contain hardlinked files:
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$ nlinksdir r1/.hg/store
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2 r1/.hg/store/00changelog.i
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2 r1/.hg/store/00manifest.i
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2 r1/.hg/store/data/d1/f2.i
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2 r1/.hg/store/data/f1.i
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2 r1/.hg/store/fncache
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1 r1/.hg/store/phaseroots
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1 r1/.hg/store/requires
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1 r1/.hg/store/undo
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1 r1/.hg/store/undo.backup.fncache
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1 r1/.hg/store/undo.backupfiles
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1 r1/.hg/store/undo.phaseroots
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$ nlinksdir r2/.hg/store
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2 r2/.hg/store/00changelog.i
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2 r2/.hg/store/00manifest.i
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2 r2/.hg/store/data/d1/f2.i
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2 r2/.hg/store/data/f1.i
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2 r2/.hg/store/fncache
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Repo r3 should not be hardlinked:
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$ nlinksdir r3/.hg/store
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1 r3/.hg/store/00changelog.i
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1 r3/.hg/store/00manifest.i
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1 r3/.hg/store/data/d1/f2.i
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1 r3/.hg/store/data/f1.i
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1 r3/.hg/store/fncache
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1 r3/.hg/store/phaseroots
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1 r3/.hg/store/requires
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1 r3/.hg/store/undo
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1 r3/.hg/store/undo.backupfiles
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1 r3/.hg/store/undo.phaseroots
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Create a non-inlined filelog in r3:
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$ cd r3/d1
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>>> f = open('data1', 'wb')
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>>> for x in range(10000):
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... f.write("%s\n" % str(x))
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>>> f.close()
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$ for j in 0 1 2 3 4 5 6 7 8 9; do
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> cat data1 >> f2
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> hg commit -m$j
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> done
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$ cd ../..
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$ nlinksdir r3/.hg/store
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1 r3/.hg/store/00changelog.i
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1 r3/.hg/store/00manifest.i
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1 r3/.hg/store/data/d1/f2.d
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1 r3/.hg/store/data/d1/f2.i
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1 r3/.hg/store/data/f1.i
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1 r3/.hg/store/fncache
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1 r3/.hg/store/phaseroots
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1 r3/.hg/store/requires
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1 r3/.hg/store/undo
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1 r3/.hg/store/undo.backup.fncache
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1 r3/.hg/store/undo.backup.phaseroots
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1 r3/.hg/store/undo.backupfiles
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1 r3/.hg/store/undo.phaseroots
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Push to repo r1 should break up most hardlinks in r2:
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$ hg -R r2 verify
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checking changesets
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checking manifests
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crosschecking files in changesets and manifests
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checking files
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2 files, 2 changesets, 2 total revisions
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$ cd r3
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$ hg push
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pushing to $TESTTMP/r1
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searching for changes
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adding changesets
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adding manifests
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adding file changes
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added 10 changesets with 10 changes to 1 files
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$ cd ..
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$ nlinksdir r2/.hg/store
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1 r2/.hg/store/00changelog.i
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1 r2/.hg/store/00manifest.i
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1 r2/.hg/store/data/d1/f2.i
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2 r2/.hg/store/data/f1.i
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[12] r2/\.hg/store/fncache (re)
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#if hardlink-whitelisted
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$ nlinksdir r2/.hg/store/fncache
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2 r2/.hg/store/fncache
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#endif
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$ hg -R r2 verify
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checking changesets
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checking manifests
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crosschecking files in changesets and manifests
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checking files
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2 files, 2 changesets, 2 total revisions
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$ cd r1
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$ hg up
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1 files updated, 0 files merged, 0 files removed, 0 files unresolved
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Committing a change to f1 in r1 must break up hardlink f1.i in r2:
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$ echo c1c1 >> f1
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$ hg ci -m00
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$ cd ..
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$ nlinksdir r2/.hg/store
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1 r2/.hg/store/00changelog.i
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1 r2/.hg/store/00manifest.i
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1 r2/.hg/store/data/d1/f2.i
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1 r2/.hg/store/data/f1.i
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[12] r2/\.hg/store/fncache (re)
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#if hardlink-whitelisted
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$ nlinksdir r2/.hg/store/fncache
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2 r2/.hg/store/fncache
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#endif
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Create a file which exec permissions we will change
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$ cd r3
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$ echo "echo hello world" > f3
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$ hg add f3
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$ hg ci -mf3
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$ cd ..
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$ cd r3
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$ hg tip --template '{rev}:{node|short}\n'
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12:d3b77733a28a
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$ echo bla > f1
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$ chmod +x f3
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$ hg ci -m1
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$ cd ..
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Create hardlinked copy r4 of r3 (on Linux, we would call 'cp -al'):
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$ linkcp r3 r4
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'checklink' is produced by hardlinking a symlink, which is undefined whether
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the symlink should be followed or not. It does behave differently on Linux and
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BSD. Just remove it so the test pass on both platforms.
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$ rm -f r4/.hg/cache/checklink
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r4 has hardlinks in the working dir (not just inside .hg):
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$ nlinksdir r4 | grep -v check
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2 r4/.hg/00changelog.i
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2 r4/.hg/branch
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2 r4/.hg/dirstate
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2 r4/.hg/hgrc
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2 r4/.hg/last-message.txt
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2 r4/.hg/requires
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2 r4/.hg/store/00changelog.i
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2 r4/.hg/store/00manifest.i
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2 r4/.hg/store/data/d1/f2.d
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2 r4/.hg/store/data/d1/f2.i
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2 r4/.hg/store/data/f1.i
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2 r4/.hg/store/data/f3.i
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2 r4/.hg/store/fncache
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2 r4/.hg/store/phaseroots
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2 r4/.hg/store/requires
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2 r4/.hg/store/undo
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2 r4/.hg/store/undo.backup.fncache
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2 r4/.hg/store/undo.backup.phaseroots
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2 r4/.hg/store/undo.backupfiles
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2 r4/.hg/store/undo.phaseroots
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2 r4/.hg/treestate/* (glob)
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[24] r4/\.hg/undo\.backup\.dirstate (re)
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2 r4/.hg/undo.bookmarks
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2 r4/.hg/undo.branch
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2 r4/.hg/undo.desc
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[24] r4/\.hg/undo\.dirstate (re)
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2 r4/d1/data1
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2 r4/d1/f2
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2 r4/f1
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2 r4/f3
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Update back to revision 12 in r4 should break hardlink of file f1 and f3:
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#if hardlink-whitelisted
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$ nlinksdir r4/.hg/undo.backup.dirstate r4/.hg/undo.dirstate
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4 r4/.hg/undo.backup.dirstate
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4 r4/.hg/undo.dirstate
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#endif
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$ hg -R r4 up 12
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2 files updated, 0 files merged, 0 files removed, 0 files unresolved (execbit !)
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1 files updated, 0 files merged, 0 files removed, 0 files unresolved (no-execbit !)
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$ nlinksdir r4 | grep -v check
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2 r4/.hg/00changelog.i
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1 r4/.hg/branch
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1 r4/.hg/dirstate
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2 r4/.hg/hgrc
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2 r4/.hg/last-message.txt
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2 r4/.hg/requires
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2 r4/.hg/store/00changelog.i
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2 r4/.hg/store/00manifest.i
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2 r4/.hg/store/data/d1/f2.d
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2 r4/.hg/store/data/d1/f2.i
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2 r4/.hg/store/data/f1.i
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2 r4/.hg/store/data/f3.i
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2 r4/.hg/store/fncache
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2 r4/.hg/store/phaseroots
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2 r4/.hg/store/requires
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2 r4/.hg/store/undo
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2 r4/.hg/store/undo.backup.fncache
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2 r4/.hg/store/undo.backup.phaseroots
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2 r4/.hg/store/undo.backupfiles
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2 r4/.hg/store/undo.phaseroots
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2 r4/.hg/treestate/* (glob)
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[24] r4/\.hg/undo\.backup\.dirstate (re)
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2 r4/.hg/undo.bookmarks
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2 r4/.hg/undo.branch
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2 r4/.hg/undo.desc
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[24] r4/\.hg/undo\.dirstate (re)
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2 r4/d1/data1
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2 r4/d1/f2
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1 r4/f1
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1 r4/f3 (execbit !)
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2 r4/f3 (no-execbit !)
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#if hardlink-whitelisted
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$ nlinksdir r4/.hg/undo.backup.dirstate r4/.hg/undo.dirstate
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4 r4/.hg/undo.backup.dirstate
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4 r4/.hg/undo.dirstate
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#endif
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Test hardlinking outside hg:
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$ mkdir x
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$ echo foo > x/a
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$ linkcp x y
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$ echo bar >> y/a
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No diff if hardlink:
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$ diff x/a y/a
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