Mercurial > hg
view tests/test-remote-hidden.t @ 42743:8c9a6adec67a
rust-discovery: using the children cache in add_missing
The DAG range computation often needs to get back to very old
revisions, and turns out to be disproportionately long, given
that the end goal is to remove the descendents of the given
missing revisons from the undecided set.
The fast iteration capabilities available in the Rust case make
it possible to avoid the DAG range entirely, at the cost of
precomputing the children cache, and to simply iterate on
children of the given missing revisions.
This is a case where staying on the same side of the interface
between the two languages has clear benefits.
On discoveries with initial undecided sets
small enough to bypass sampling entirely, the total cost of
computing the children cache and the subsequent iteration
becomes better than the Python + C counterpart, which relies on
reachableroots2.
For example, on a repo with more than one million revisions with
an initial undecided set of 11 elements, we get these figures:
Rust version with simple iteration
addcommons: 57.287us
first undecided computation: 184.278334ms
first children cache computation: 131.056us
addmissings iteration: 42.766us
first addinfo total: 185.24 ms
Python + C version
first addcommons: 0.29 ms
addcommons 0.21 ms
first undecided computation 191.35 ms
addmissings 45.75 ms
first addinfo total: 237.77 ms
On discoveries with large undecided sets, the initial price paid
makes the first addinfo slower than the Python + C version,
but that's more than compensated by the gain in sampling and
subsequent iterations.
Here's an extreme example with an undecided set of a million revisions:
Rust version:
first undecided computation: 293.842629ms
first children cache computation: 407.911297ms
addmissings iteration: 34.312869ms
first addinfo total: 776.02 ms
taking initial sample
query 2: sampling time: 1318.38 ms
query 2; still undecided: 1005013, sample size is: 200
addmissings: 143.062us
Python + C version:
first undecided computation 298.13 ms
addmissings 80.13 ms
first addinfo total: 399.62 ms
taking initial sample
query 2: sampling time: 3957.23 ms
query 2; still undecided: 1005013, sample size is: 200
addmissings 52.88 ms
Differential Revision: https://phab.mercurial-scm.org/D6428
author | Georges Racinet <georges.racinet@octobus.net> |
---|---|
date | Tue, 16 Apr 2019 01:16:39 +0200 |
parents | 70b71421fd33 |
children | 34a46d48d24e |
line wrap: on
line source
======================================================== Test the ability to access a hidden revision on a server ======================================================== #require serve $ . $TESTDIR/testlib/obsmarker-common.sh $ cat >> $HGRCPATH << EOF > [phases] > # public changeset are not obsolete > publish=false > [experimental] > evolution=all > [ui] > logtemplate='{rev}:{node|short} {desc} [{phase}]\n' > EOF Setup a simple repository with some hidden revisions ---------------------------------------------------- Testing the `served.hidden` view $ hg init repo-with-hidden $ cd repo-with-hidden $ echo 0 > a $ hg ci -qAm "c_Public" $ hg phase --public $ echo 1 > a $ hg ci -m "c_Amend_Old" $ echo 2 > a $ hg ci -m "c_Amend_New" --amend $ hg up ".^" 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo 3 > a $ hg ci -m "c_Pruned" created new head $ hg debugobsolete --record-parents `getid 'desc("c_Pruned")'` -d '0 0' obsoleted 1 changesets $ hg up ".^" 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo 4 > a $ hg ci -m "c_Secret" --secret created new head $ echo 5 > a $ hg ci -m "c_Secret_Pruned" --secret $ hg debugobsolete --record-parents `getid 'desc("c_Secret_Pruned")'` -d '0 0' obsoleted 1 changesets $ hg up null 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg log -G -T '{rev}:{node|short} {desc} [{phase}]\n' --hidden x 5:8d28cbe335f3 c_Secret_Pruned [secret] | o 4:1c6afd79eb66 c_Secret [secret] | | x 3:5d1575e42c25 c_Pruned [draft] |/ | o 2:c33affeb3f6b c_Amend_New [draft] |/ | x 1:be215fbb8c50 c_Amend_Old [draft] |/ o 0:5f354f46e585 c_Public [public] $ hg debugobsolete be215fbb8c5090028b00154c1fe877ad1b376c61 c33affeb3f6b4e9621d1839d6175ddc07708807c 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '9', 'operation': 'amend', 'user': 'test'} 5d1575e42c25b7f2db75cd4e0b881b1c35158fae 0 {5f354f46e5853535841ec7a128423e991ca4d59b} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'} 8d28cbe335f311bc89332d7bbe8a07889b6914a0 0 {1c6afd79eb6663275bbe30097e162b1c24ced0f0} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'} $ cd .. Test the feature ================ Check cache pre-warm -------------------- $ ls -1 repo-with-hidden/.hg/cache branch2 branch2-base branch2-served branch2-served.hidden branch2-visible rbc-names-v1 rbc-revs-v1 tags2 tags2-visible Check that the `served.hidden` repoview --------------------------------------- $ hg -R repo-with-hidden serve -p $HGPORT -d --pid-file hg.pid --config web.view=served.hidden $ cat hg.pid >> $DAEMON_PIDS changesets in secret and higher phases are not visible through hgweb $ hg -R repo-with-hidden log --template "revision: {rev}\\n" --rev "reverse(not secret())" revision: 2 revision: 0 $ hg -R repo-with-hidden log --template "revision: {rev}\\n" --rev "reverse(not secret())" --hidden revision: 3 revision: 2 revision: 1 revision: 0 $ get-with-headers.py localhost:$HGPORT 'log?style=raw' | grep revision: revision: 3 revision: 2 revision: 1 revision: 0 $ killdaemons.py