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view tests/test-wireproto-exchangev2-shallow.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 | 3ed77780f4a6 |
children | 775224e26d74 |
line wrap: on
line source
#require sqlite Tests for wire protocol version 2 exchange. Tests in this file should be folded into existing tests once protocol v2 has enough features that it can be enabled via #testcase in existing tests. $ . $TESTDIR/wireprotohelpers.sh $ enablehttpv2client $ cat >> $HGRCPATH << EOF > [extensions] > sqlitestore = > pullext = $TESTDIR/pullext.py > [storage] > new-repo-backend=sqlite > EOF Configure a server $ hg init server-basic $ enablehttpv2 server-basic $ cd server-basic $ mkdir dir0 dir1 $ echo a0 > a $ echo b0 > b $ hg -q commit -A -m 'commit 0' $ echo c0 > dir0/c $ echo d0 > dir0/d $ hg -q commit -A -m 'commit 1' $ echo e0 > dir1/e $ echo f0 > dir1/f $ hg -q commit -A -m 'commit 2' $ echo c1 > dir0/c $ echo e1 > dir1/e $ hg commit -m 'commit 3' $ echo c2 > dir0/c $ echo e2 > dir1/e $ echo f1 > dir1/f $ hg commit -m 'commit 4' $ echo a1 > a $ echo b1 > b $ hg commit -m 'commit 5' $ hg log -G -T '{node} {desc}' @ 93a8bd067ed2840d9aa810ad598168383a3a2c3a commit 5 | o dc666cf9ecf3d94e6b830f30e5f1272e2a9164d9 commit 4 | o 97765fc3cd624fd1fa0176932c21ffd16adf432e commit 3 | o 47fe012ab237a8c7fc0c78f9f26d5866eef3f825 commit 2 | o b709380892b193c1091d3a817f706052e346821b commit 1 | o 3390ef850073fbc2f0dfff2244342c8e9229013a commit 0 $ hg serve -p $HGPORT -d --pid-file hg.pid -E error.log $ cat hg.pid > $DAEMON_PIDS $ cd .. Shallow clone pulls down latest revision of every file $ hg --debug clone --depth 1 http://localhost:$HGPORT client-shallow-1 using http://localhost:$HGPORT/ sending capabilities command query 1; heads sending 2 commands sending command heads: {} sending command known: { 'nodes': [] } received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos) received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=22; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos) received frame(size=11; request=3; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=1; request=3; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=3; stream=2; streamflags=; type=command-response; flags=eos) sending 1 commands sending command changesetdata: { 'fields': set([ 'bookmarks', 'parents', 'phase', 'revision' ]), 'revisions': [ { 'heads': [ '\x93\xa8\xbd\x06~\xd2\x84\r\x9a\xa8\x10\xadY\x81h8::,:' ], 'roots': [], 'type': 'changesetdagrange' } ] } received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos) received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=1170; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos) add changeset 3390ef850073 add changeset b709380892b1 add changeset 47fe012ab237 add changeset 97765fc3cd62 add changeset dc666cf9ecf3 add changeset 93a8bd067ed2 checking for updated bookmarks sending 1 commands sending command manifestdata: { 'fields': set([ 'parents', 'revision' ]), 'haveparents': True, 'nodes': [ '\x99/Gy\x02\x9a=\xf8\xd0fm\x00\xbb\x92OicN&A', '|2 \x1a\xa3\xa1R\xa9\xe6\xa9"+?\xa8\xd0\xe3\x0f\xc2V\xe8', '\x8d\xd0W<\x7f\xaf\xe2\x04F\xcc\xea\xac\x05N\xea\xa4x\x91M\xdb', '113\x85\xf2!\x8b\x08^\xb2Z\x821\x1e*\xdd\x0e\xeb\x8c3', 'H]O\xc2`\xef\\\xb9\xc0p6\x88K\x00k\x11\x0ej\xdby', '\xd9;\xc4\x0b\x0e*GMp\xee\xf7}^\x91/f\x7fSd\x83' ], 'tree': '' } received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos) received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=1515; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos) sending 1 commands sending command filesdata: { 'fields': set([ 'linknode', 'parents', 'revision' ]), 'haveparents': False, 'revisions': [ { 'nodes': [ '\x93\xa8\xbd\x06~\xd2\x84\r\x9a\xa8\x10\xadY\x81h8::,:' ], 'type': 'changesetexplicit' } ] } received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos) received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=1005; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos) updating the branch cache new changesets 3390ef850073:93a8bd067ed2 updating to branch default resolving manifests branchmerge: False, force: False, partial: False ancestor: 000000000000, local: 000000000000+, remote: 93a8bd067ed2 a: remote created -> g getting a b: remote created -> g getting b dir0/c: remote created -> g getting dir0/c dir0/d: remote created -> g getting dir0/d dir1/e: remote created -> g getting dir1/e dir1/f: remote created -> g getting dir1/f 6 files updated, 0 files merged, 0 files removed, 0 files unresolved (sent 5 HTTP requests and * bytes; received * bytes in responses) (glob) $ sqlite3 -line client-shallow-1/.hg/store/db.sqlite << EOF > SELECT id, path, revnum, node, p1rev, p2rev, linkrev, flags FROM filedata ORDER BY id ASC; > EOF id = 1 path = a revnum = 0 node = \x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xcc (esc) p1rev = -1 p2rev = -1 linkrev = 5 flags = 2 id = 2 path = b revnum = 0 node = \xb1zk\xd3g=\x9a\xb8\xce\xd5\x81\xa2 \xf6/=\xa5\xccEx (esc) p1rev = -1 p2rev = -1 linkrev = 5 flags = 2 id = 3 path = dir0/c revnum = 0 node = I\x1d\xa1\xbb\x89\xeax\xc0\xc0\xa2s[\x16\xce}\x93\x1d\xc8\xe2\r (esc) p1rev = -1 p2rev = -1 linkrev = 5 flags = 2 id = 4 path = dir0/d revnum = 0 node = S\x82\x06\xdc\x97\x1eR\x15@\xd6\x84:\xbf\xe6\xd1`2\xf6\xd4& (esc) p1rev = -1 p2rev = -1 linkrev = 5 flags = 0 id = 5 path = dir1/e revnum = 0 node = ]\xf3\xac\xd8\xd0\xc7\xfaP\x98\xd0'\x9a\x044\xc3\x02\x9e+x\xe1 (esc) p1rev = -1 p2rev = -1 linkrev = 5 flags = 2 id = 6 path = dir1/f revnum = 0 node = (\xc7v\xae\x08\xd0\xd5^\xb4\x06H\xb4\x01\xb9\x0f\xf5DH4\x8e (esc) p1rev = -1 p2rev = -1 linkrev = 5 flags = 2 Test a shallow clone with only some files $ hg --debug clone --depth 1 --include dir0/ http://localhost:$HGPORT client-shallow-narrow-1 using http://localhost:$HGPORT/ sending capabilities command query 1; heads sending 2 commands sending command heads: {} sending command known: { 'nodes': [] } received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos) received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=22; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos) received frame(size=11; request=3; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=1; request=3; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=3; stream=2; streamflags=; type=command-response; flags=eos) sending 1 commands sending command changesetdata: { 'fields': set([ 'bookmarks', 'parents', 'phase', 'revision' ]), 'revisions': [ { 'heads': [ '\x93\xa8\xbd\x06~\xd2\x84\r\x9a\xa8\x10\xadY\x81h8::,:' ], 'roots': [], 'type': 'changesetdagrange' } ] } received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos) received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=1170; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos) add changeset 3390ef850073 add changeset b709380892b1 add changeset 47fe012ab237 add changeset 97765fc3cd62 add changeset dc666cf9ecf3 add changeset 93a8bd067ed2 checking for updated bookmarks sending 1 commands sending command manifestdata: { 'fields': set([ 'parents', 'revision' ]), 'haveparents': True, 'nodes': [ '\x99/Gy\x02\x9a=\xf8\xd0fm\x00\xbb\x92OicN&A', '|2 \x1a\xa3\xa1R\xa9\xe6\xa9"+?\xa8\xd0\xe3\x0f\xc2V\xe8', '\x8d\xd0W<\x7f\xaf\xe2\x04F\xcc\xea\xac\x05N\xea\xa4x\x91M\xdb', '113\x85\xf2!\x8b\x08^\xb2Z\x821\x1e*\xdd\x0e\xeb\x8c3', 'H]O\xc2`\xef\\\xb9\xc0p6\x88K\x00k\x11\x0ej\xdby', '\xd9;\xc4\x0b\x0e*GMp\xee\xf7}^\x91/f\x7fSd\x83' ], 'tree': '' } received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos) received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=1515; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos) sending 1 commands sending command filesdata: { 'fields': set([ 'linknode', 'parents', 'revision' ]), 'haveparents': False, 'pathfilter': { 'include': [ 'path:dir0' ] }, 'revisions': [ { 'nodes': [ '\x93\xa8\xbd\x06~\xd2\x84\r\x9a\xa8\x10\xadY\x81h8::,:' ], 'type': 'changesetexplicit' } ] } received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos) received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=355; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos) updating the branch cache new changesets 3390ef850073:93a8bd067ed2 updating to branch default resolving manifests branchmerge: False, force: False, partial: False ancestor: 000000000000, local: 000000000000+, remote: 93a8bd067ed2 dir0/c: remote created -> g getting dir0/c dir0/d: remote created -> g getting dir0/d 2 files updated, 0 files merged, 0 files removed, 0 files unresolved (sent 5 HTTP requests and * bytes; received * bytes in responses) (glob) $ sqlite3 -line client-shallow-narrow-1/.hg/store/db.sqlite << EOF > SELECT id, path, revnum, node, p1rev, p2rev, linkrev, flags FROM filedata ORDER BY id ASC; > EOF id = 1 path = dir0/c revnum = 0 node = I\x1d\xa1\xbb\x89\xeax\xc0\xc0\xa2s[\x16\xce}\x93\x1d\xc8\xe2\r (esc) p1rev = -1 p2rev = -1 linkrev = 5 flags = 2 id = 2 path = dir0/d revnum = 0 node = S\x82\x06\xdc\x97\x1eR\x15@\xd6\x84:\xbf\xe6\xd1`2\xf6\xd4& (esc) p1rev = -1 p2rev = -1 linkrev = 5 flags = 0 Cloning an old revision with depth=1 works $ hg --debug clone --depth 1 -r 97765fc3cd624fd1fa0176932c21ffd16adf432e http://localhost:$HGPORT client-shallow-2 using http://localhost:$HGPORT/ sending capabilities command sending 1 commands sending command lookup: { 'key': '97765fc3cd624fd1fa0176932c21ffd16adf432e' } received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos) received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=21; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos) query 1; heads sending 2 commands sending command heads: {} sending command known: { 'nodes': [] } received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos) received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=22; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos) received frame(size=11; request=3; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=1; request=3; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=3; stream=2; streamflags=; type=command-response; flags=eos) sending 1 commands sending command changesetdata: { 'fields': set([ 'bookmarks', 'parents', 'phase', 'revision' ]), 'revisions': [ { 'heads': [ '\x97v_\xc3\xcdbO\xd1\xfa\x01v\x93,!\xff\xd1j\xdfC.' ], 'roots': [], 'type': 'changesetdagrange' } ] } received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos) received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=783; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos) add changeset 3390ef850073 add changeset b709380892b1 add changeset 47fe012ab237 add changeset 97765fc3cd62 checking for updated bookmarks sending 1 commands sending command manifestdata: { 'fields': set([ 'parents', 'revision' ]), 'haveparents': True, 'nodes': [ '\x99/Gy\x02\x9a=\xf8\xd0fm\x00\xbb\x92OicN&A', '|2 \x1a\xa3\xa1R\xa9\xe6\xa9"+?\xa8\xd0\xe3\x0f\xc2V\xe8', '\x8d\xd0W<\x7f\xaf\xe2\x04F\xcc\xea\xac\x05N\xea\xa4x\x91M\xdb', '113\x85\xf2!\x8b\x08^\xb2Z\x821\x1e*\xdd\x0e\xeb\x8c3' ], 'tree': '' } received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos) received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=967; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos) sending 1 commands sending command filesdata: { 'fields': set([ 'linknode', 'parents', 'revision' ]), 'haveparents': False, 'revisions': [ { 'nodes': [ '\x97v_\xc3\xcdbO\xd1\xfa\x01v\x93,!\xff\xd1j\xdfC.' ], 'type': 'changesetexplicit' } ] } received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos) received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=1005; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos) updating the branch cache new changesets 3390ef850073:97765fc3cd62 updating to branch default resolving manifests branchmerge: False, force: False, partial: False ancestor: 000000000000, local: 000000000000+, remote: 97765fc3cd62 a: remote created -> g getting a b: remote created -> g getting b dir0/c: remote created -> g getting dir0/c dir0/d: remote created -> g getting dir0/d dir1/e: remote created -> g getting dir1/e dir1/f: remote created -> g getting dir1/f 6 files updated, 0 files merged, 0 files removed, 0 files unresolved (sent 6 HTTP requests and * bytes; received * bytes in responses) (glob) Incremental pull of shallow clone fetches new changesets $ hg --cwd client-shallow-2 --debug pull http://localhost:$HGPORT pulling from http://localhost:$HGPORT/ using http://localhost:$HGPORT/ sending capabilities command query 1; heads sending 2 commands sending command heads: {} sending command known: { 'nodes': [ '\x97v_\xc3\xcdbO\xd1\xfa\x01v\x93,!\xff\xd1j\xdfC.' ] } received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos) received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=22; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos) received frame(size=11; request=3; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=2; request=3; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=3; stream=2; streamflags=; type=command-response; flags=eos) searching for changes all local heads known remotely sending 1 commands sending command changesetdata: { 'fields': set([ 'bookmarks', 'parents', 'phase', 'revision' ]), 'revisions': [ { 'heads': [ '\x93\xa8\xbd\x06~\xd2\x84\r\x9a\xa8\x10\xadY\x81h8::,:' ], 'roots': [ '\x97v_\xc3\xcdbO\xd1\xfa\x01v\x93,!\xff\xd1j\xdfC.' ], 'type': 'changesetdagrange' } ] } received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos) received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=400; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos) add changeset dc666cf9ecf3 add changeset 93a8bd067ed2 checking for updated bookmarks sending 1 commands sending command manifestdata: { 'fields': set([ 'parents', 'revision' ]), 'haveparents': True, 'nodes': [ 'H]O\xc2`\xef\\\xb9\xc0p6\x88K\x00k\x11\x0ej\xdby', '\xd9;\xc4\x0b\x0e*GMp\xee\xf7}^\x91/f\x7fSd\x83' ], 'tree': '' } received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos) received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=561; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos) sending 1 commands sending command filesdata: { 'fields': set([ 'linknode', 'parents', 'revision' ]), 'haveparents': False, 'revisions': [ { 'nodes': [ '\xdcfl\xf9\xec\xf3\xd9Nk\x83\x0f0\xe5\xf1\'.*\x91d\xd9', '\x93\xa8\xbd\x06~\xd2\x84\r\x9a\xa8\x10\xadY\x81h8::,:' ], 'type': 'changesetexplicit' } ] } received frame(size=9; request=1; stream=2; streamflags=stream-begin; type=stream-settings; flags=eos) received frame(size=11; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=1373; request=1; stream=2; streamflags=encoded; type=command-response; flags=continuation) received frame(size=0; request=1; stream=2; streamflags=; type=command-response; flags=eos) updating the branch cache new changesets dc666cf9ecf3:93a8bd067ed2 (run 'hg update' to get a working copy) (sent 5 HTTP requests and * bytes; received * bytes in responses) (glob) $ hg --cwd client-shallow-2 up tip merging dir0/c merging dir1/e 3 files updated, 2 files merged, 0 files removed, 0 files unresolved