Mercurial > hg
view tests/test-clone-uncompressed.t @ 42044:bb271ec2fbfb
compression: introduce a `storage.revlog.zstd.level` configuration
This option control the zstd compression level used when compressing revlog
chunk. The usage of zstd for revlog compression has not graduated from
experimental yet, but we intend to fix that soon.
The option name for the compression level is more straight forward to pick, so
this changesets comes first. Having a dedicated option for each compression
engine is useful because they don't support the same range of values.
I ran the same measurement as for the zlib compression level (in the parent
changesets). The variation in repository size is stay mostly in the same (small)
range. The "read/write" performance see smallish variation, but are overall much
better than zlib. Write performance show the same tend of having better write
performance for when reaching high-end compression.
Again, we don't intend to change the default zstd compression level (currently:
3) in this series. However this is worth investigating in the future.
The Performance comparison of zlib vs zstd is quite impressive. The repository
size stay in the same range, but the performance are much better in all
situations.
Comparison summary
==================
We are looking at:
- performance range for zlib
- performance range for zstd
- comparison of default zstd (level-3) to default zlib (level 6)
- comparison of the slowest zstd time to the fastest zlib time
Read performance:
-----------------
| zlib | zstd | cmp | f2s
mercurial | 0.170159 - 0.189219 | 0.144127 - 0.149624 | 80% | 88%
pypy | 2.679217 - 2.768691 | 1.532317 - 1.705044 | 60% | 63%
netbeans | 122.477027 - 141.620281 | 72.996346 - 89.731560 | 58% | 73%
mozilla | 147.867662 - 170.572118 | 91.700995 - 105.853099 | 56% | 71%
Write performance:
------------------
| zlib | zstd | cmp | f2s
mercurial | 53.250304 - 56.2936129 | 40.877025 - 45.677286 | 75% | 86%
pypy | 460.721984 - 476.589918 | 270.545409 - 301.002219 | 63% | 65%
netbeans | 520.560316 - 715.930400 | 370.356311 - 428.329652 | 55% | 82%
mozilla | 739.803002 - 987.056093 | 505.152906 - 591.930683 | 57% | 80%
Raw data
--------
repo alg lvl .hg/store size 00manifest.d read write
mercurial zlib 1 49,402,813 5,963,475 0.170159 53.250304
mercurial zlib 6 47,197,397 5,875,730 0.182820 56.264320
mercurial zlib 9 47,121,596 5,849,781 0.189219 56.293612
mercurial zstd 1 49,737,084 5,966,355 0.144127 40.877025
mercurial zstd 3 48,961,867 5,895,208 0.146376 42.268142
mercurial zstd 5 48,200,592 5,938,676 0.149624 43.162875
mercurial zstd 10 47,833,520 5,913,353 0.145185 44.012489
mercurial zstd 15 47,314,604 5,728,679 0.147686 45.677286
mercurial zstd 20 47,330,502 5,830,539 0.145789 45.025407
mercurial zstd 22 47,330,076 5,830,539 0.143996 44.690460
pypy zlib 1 370,830,572 28,462,425 2.679217 460.721984
pypy zlib 6 340,112,317 27,648,747 2.768691 467.537158
pypy zlib 9 338,360,736 27,639,003 2.763495 476.589918
pypy zstd 1 362,377,479 27,916,214 1.532317 270.545409
pypy zstd 3 354,137,693 27,905,988 1.686718 294.951509
pypy zstd 5 342,640,043 27,655,774 1.705044 301.002219
pypy zstd 10 334,224,327 27,164,493 1.567287 285.186239
pypy zstd 15 329,000,363 26,645,965 1.637729 299.561332
pypy zstd 20 324,534,039 26,199,547 1.526813 302.149827
pypy zstd 22 324,530,595 26,198,932 1.525718 307.821218
netbeans zlib 1 1,281,847,810 165,495,457 122.477027 520.560316
netbeans zlib 6 1,205,284,353 159,161,207 139.876147 715.930400
netbeans zlib 9 1,197,135,671 155,034,586 141.620281 678.297064
netbeans zstd 1 1,259,581,737 160,840,613 72.996346 370.356311
netbeans zstd 3 1,232,978,122 157,691,551 81.622317 396.733087
netbeans zstd 5 1,208,034,075 160,246,880 83.080549 364.342626
netbeans zstd 10 1,188,624,176 156,083,417 79.323935 403.594602
netbeans zstd 15 1,176,973,589 153,859,477 89.731560 428.329652
netbeans zstd 20 1,162,958,258 151,147,535 82.842667 392.335349
netbeans zstd 22 1,162,707,029 151,150,220 82.565695 402.840655
mozilla zlib 1 2,775,497,186 298,527,987 147.867662 751.263721
mozilla zlib 6 2,596,856,420 286,597,671 170.572118 987.056093
mozilla zlib 9 2,587,542,494 287,018,264 163.622338 739.803002
mozilla zstd 1 2,723,159,348 286,617,532 91.700995 570.042751
mozilla zstd 3 2,665,055,001 286,152,013 95.240155 561.412805
mozilla zstd 5 2,607,819,817 288,060,030 101.978048 505.152906
mozilla zstd 10 2,558,761,085 283,967,648 104.113481 497.771202
mozilla zstd 15 2,526,216,060 275,581,300 105.853099 591.930683
mozilla zstd 20 2,485,114,806 266,478,859 95.268795 576.515389
mozilla zstd 22 2,484,869,080 266,456,505 94.429282 572.785537
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Wed, 27 Mar 2019 18:35:59 +0100 |
parents | 42f59d3f714d |
children | 34a46d48d24e |
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#require serve no-reposimplestore no-chg #testcases stream-legacy stream-bundle2 #if stream-legacy $ cat << EOF >> $HGRCPATH > [server] > bundle2.stream = no > EOF #endif Initialize repository the status call is to check for issue5130 $ hg init server $ cd server $ touch foo $ hg -q commit -A -m initial >>> for i in range(1024): ... with open(str(i), 'wb') as fh: ... fh.write(b"%d" % i) and None $ hg -q commit -A -m 'add a lot of files' $ hg st $ hg --config server.uncompressed=false serve -p $HGPORT -d --pid-file=hg.pid $ cat hg.pid > $DAEMON_PIDS $ cd .. Cannot stream clone when server.uncompressed is set $ get-with-headers.py $LOCALIP:$HGPORT '?cmd=stream_out' 200 Script output follows 1 #if stream-legacy $ hg debugcapabilities http://localhost:$HGPORT Main capabilities: batch branchmap $USUAL_BUNDLE2_CAPS_SERVER$ changegroupsubset compression=$BUNDLE2_COMPRESSIONS$ getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash Bundle2 capabilities: HG20 bookmarks changegroup 01 02 digests md5 sha1 sha512 error abort unsupportedcontent pushraced pushkey hgtagsfnodes listkeys phases heads pushkey remote-changegroup http https rev-branch-cache $ hg clone --stream -U http://localhost:$HGPORT server-disabled warning: stream clone requested but server has them disabled requesting all changes adding changesets adding manifests adding file changes added 2 changesets with 1025 changes to 1025 files new changesets 96ee1d7354c4:c17445101a72 $ get-with-headers.py $LOCALIP:$HGPORT '?cmd=getbundle' content-type --bodyfile body --hgproto 0.2 --requestheader "x-hgarg-1=bundlecaps=HG20%2Cbundle2%3DHG20%250Abookmarks%250Achangegroup%253D01%252C02%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Aphases%253Dheads%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps&cg=0&common=0000000000000000000000000000000000000000&heads=c17445101a72edac06facd130d14808dfbd5c7c2&stream=1" 200 Script output follows content-type: application/mercurial-0.2 $ f --size body --hexdump --bytes 100 body: size=232 0000: 04 6e 6f 6e 65 48 47 32 30 00 00 00 00 00 00 00 |.noneHG20.......| 0010: cf 0b 45 52 52 4f 52 3a 41 42 4f 52 54 00 00 00 |..ERROR:ABORT...| 0020: 00 01 01 07 3c 04 72 6d 65 73 73 61 67 65 73 74 |....<.rmessagest| 0030: 72 65 61 6d 20 64 61 74 61 20 72 65 71 75 65 73 |ream data reques| 0040: 74 65 64 20 62 75 74 20 73 65 72 76 65 72 20 64 |ted but server d| 0050: 6f 65 73 20 6e 6f 74 20 61 6c 6c 6f 77 20 74 68 |oes not allow th| 0060: 69 73 20 66 |is f| #endif #if stream-bundle2 $ hg debugcapabilities http://localhost:$HGPORT Main capabilities: batch branchmap $USUAL_BUNDLE2_CAPS_SERVER$ changegroupsubset compression=$BUNDLE2_COMPRESSIONS$ getbundle httpheader=1024 httpmediatype=0.1rx,0.1tx,0.2tx known lookup pushkey unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash Bundle2 capabilities: HG20 bookmarks changegroup 01 02 digests md5 sha1 sha512 error abort unsupportedcontent pushraced pushkey hgtagsfnodes listkeys phases heads pushkey remote-changegroup http https rev-branch-cache $ hg clone --stream -U http://localhost:$HGPORT server-disabled warning: stream clone requested but server has them disabled requesting all changes adding changesets adding manifests adding file changes added 2 changesets with 1025 changes to 1025 files new changesets 96ee1d7354c4:c17445101a72 $ get-with-headers.py $LOCALIP:$HGPORT '?cmd=getbundle' content-type --bodyfile body --hgproto 0.2 --requestheader "x-hgarg-1=bundlecaps=HG20%2Cbundle2%3DHG20%250Abookmarks%250Achangegroup%253D01%252C02%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Aphases%253Dheads%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps&cg=0&common=0000000000000000000000000000000000000000&heads=c17445101a72edac06facd130d14808dfbd5c7c2&stream=1" 200 Script output follows content-type: application/mercurial-0.2 $ f --size body --hexdump --bytes 100 body: size=232 0000: 04 6e 6f 6e 65 48 47 32 30 00 00 00 00 00 00 00 |.noneHG20.......| 0010: cf 0b 45 52 52 4f 52 3a 41 42 4f 52 54 00 00 00 |..ERROR:ABORT...| 0020: 00 01 01 07 3c 04 72 6d 65 73 73 61 67 65 73 74 |....<.rmessagest| 0030: 72 65 61 6d 20 64 61 74 61 20 72 65 71 75 65 73 |ream data reques| 0040: 74 65 64 20 62 75 74 20 73 65 72 76 65 72 20 64 |ted but server d| 0050: 6f 65 73 20 6e 6f 74 20 61 6c 6c 6f 77 20 74 68 |oes not allow th| 0060: 69 73 20 66 |is f| #endif $ killdaemons.py $ cd server $ hg serve -p $HGPORT -d --pid-file=hg.pid $ cat hg.pid > $DAEMON_PIDS $ cd .. Basic clone #if stream-legacy $ hg clone --stream -U http://localhost:$HGPORT clone1 streaming all changes 1027 files to transfer, 96.3 KB of data transferred 96.3 KB in * seconds (*/sec) (glob) searching for changes no changes found #endif #if stream-bundle2 $ hg clone --stream -U http://localhost:$HGPORT clone1 streaming all changes 1030 files to transfer, 96.5 KB of data transferred 96.5 KB in * seconds (* */sec) (glob) $ ls -1 clone1/.hg/cache branch2-served rbc-names-v1 rbc-revs-v1 #endif getbundle requests with stream=1 are uncompressed $ get-with-headers.py $LOCALIP:$HGPORT '?cmd=getbundle' content-type --bodyfile body --hgproto '0.1 0.2 comp=zlib,none' --requestheader "x-hgarg-1=bundlecaps=HG20%2Cbundle2%3DHG20%250Abookmarks%250Achangegroup%253D01%252C02%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Aphases%253Dheads%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps&cg=0&common=0000000000000000000000000000000000000000&heads=c17445101a72edac06facd130d14808dfbd5c7c2&stream=1" 200 Script output follows content-type: application/mercurial-0.2 $ f --size --hex --bytes 256 body body: size=112262 0000: 04 6e 6f 6e 65 48 47 32 30 00 00 00 00 00 00 00 |.noneHG20.......| 0010: 7f 07 53 54 52 45 41 4d 32 00 00 00 00 03 00 09 |..STREAM2.......| 0020: 05 09 04 0c 44 62 79 74 65 63 6f 75 6e 74 39 38 |....Dbytecount98| 0030: 37 37 35 66 69 6c 65 63 6f 75 6e 74 31 30 33 30 |775filecount1030| 0040: 72 65 71 75 69 72 65 6d 65 6e 74 73 64 6f 74 65 |requirementsdote| 0050: 6e 63 6f 64 65 25 32 43 66 6e 63 61 63 68 65 25 |ncode%2Cfncache%| 0060: 32 43 67 65 6e 65 72 61 6c 64 65 6c 74 61 25 32 |2Cgeneraldelta%2| 0070: 43 72 65 76 6c 6f 67 76 31 25 32 43 73 70 61 72 |Crevlogv1%2Cspar| 0080: 73 65 72 65 76 6c 6f 67 25 32 43 73 74 6f 72 65 |serevlog%2Cstore| 0090: 00 00 80 00 73 08 42 64 61 74 61 2f 30 2e 69 00 |....s.Bdata/0.i.| 00a0: 03 00 01 00 00 00 00 00 00 00 02 00 00 00 01 00 |................| 00b0: 00 00 00 00 00 00 01 ff ff ff ff ff ff ff ff 80 |................| 00c0: 29 63 a0 49 d3 23 87 bf ce fe 56 67 92 67 2c 69 |)c.I.#....Vg.g,i| 00d0: d1 ec 39 00 00 00 00 00 00 00 00 00 00 00 00 75 |..9............u| 00e0: 30 73 08 42 64 61 74 61 2f 31 2e 69 00 03 00 01 |0s.Bdata/1.i....| 00f0: 00 00 00 00 00 00 00 02 00 00 00 01 00 00 00 00 |................| --uncompressed is an alias to --stream #if stream-legacy $ hg clone --uncompressed -U http://localhost:$HGPORT clone1-uncompressed streaming all changes 1027 files to transfer, 96.3 KB of data transferred 96.3 KB in * seconds (*/sec) (glob) searching for changes no changes found #endif #if stream-bundle2 $ hg clone --uncompressed -U http://localhost:$HGPORT clone1-uncompressed streaming all changes 1030 files to transfer, 96.5 KB of data transferred 96.5 KB in * seconds (* */sec) (glob) #endif Clone with background file closing enabled #if stream-legacy $ hg --debug --config worker.backgroundclose=true --config worker.backgroundcloseminfilecount=1 clone --stream -U http://localhost:$HGPORT clone-background | grep -v adding using http://localhost:$HGPORT/ sending capabilities command sending branchmap command streaming all changes sending stream_out command 1027 files to transfer, 96.3 KB of data starting 4 threads for background file closing updating the branch cache transferred 96.3 KB in * seconds (*/sec) (glob) query 1; heads sending batch command searching for changes all remote heads known locally no changes found sending getbundle command bundle2-input-bundle: with-transaction bundle2-input-part: "listkeys" (params: 1 mandatory) supported bundle2-input-part: "phase-heads" supported bundle2-input-part: total payload size 24 bundle2-input-bundle: 1 parts total checking for updated bookmarks (sent 5 HTTP requests and * bytes; received * bytes in responses) (glob) #endif #if stream-bundle2 $ hg --debug --config worker.backgroundclose=true --config worker.backgroundcloseminfilecount=1 clone --stream -U http://localhost:$HGPORT clone-background | grep -v adding using http://localhost:$HGPORT/ sending capabilities command query 1; heads sending batch command streaming all changes sending getbundle command bundle2-input-bundle: with-transaction bundle2-input-part: "stream2" (params: 3 mandatory) supported applying stream bundle 1030 files to transfer, 96.5 KB of data starting 4 threads for background file closing starting 4 threads for background file closing updating the branch cache transferred 96.5 KB in * seconds (* */sec) (glob) bundle2-input-part: total payload size 112094 bundle2-input-part: "listkeys" (params: 1 mandatory) supported bundle2-input-bundle: 1 parts total checking for updated bookmarks (sent 3 HTTP requests and * bytes; received * bytes in responses) (glob) #endif Cannot stream clone when there are secret changesets $ hg -R server phase --force --secret -r tip $ hg clone --stream -U http://localhost:$HGPORT secret-denied warning: stream clone requested but server has them disabled requesting all changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files new changesets 96ee1d7354c4 $ killdaemons.py Streaming of secrets can be overridden by server config $ cd server $ hg serve --config server.uncompressedallowsecret=true -p $HGPORT -d --pid-file=hg.pid $ cat hg.pid > $DAEMON_PIDS $ cd .. #if stream-legacy $ hg clone --stream -U http://localhost:$HGPORT secret-allowed streaming all changes 1027 files to transfer, 96.3 KB of data transferred 96.3 KB in * seconds (*/sec) (glob) searching for changes no changes found #endif #if stream-bundle2 $ hg clone --stream -U http://localhost:$HGPORT secret-allowed streaming all changes 1030 files to transfer, 96.5 KB of data transferred 96.5 KB in * seconds (* */sec) (glob) #endif $ killdaemons.py Verify interaction between preferuncompressed and secret presence $ cd server $ hg serve --config server.preferuncompressed=true -p $HGPORT -d --pid-file=hg.pid $ cat hg.pid > $DAEMON_PIDS $ cd .. $ hg clone -U http://localhost:$HGPORT preferuncompressed-secret requesting all changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files new changesets 96ee1d7354c4 $ killdaemons.py Clone not allowed when full bundles disabled and can't serve secrets $ cd server $ hg serve --config server.disablefullbundle=true -p $HGPORT -d --pid-file=hg.pid $ cat hg.pid > $DAEMON_PIDS $ cd .. $ hg clone --stream http://localhost:$HGPORT secret-full-disabled warning: stream clone requested but server has them disabled requesting all changes remote: abort: server has pull-based clones disabled abort: pull failed on remote (remove --pull if specified or upgrade Mercurial) [255] Local stream clone with secrets involved (This is just a test over behavior: if you have access to the repo's files, there is no security so it isn't important to prevent a clone here.) $ hg clone -U --stream server local-secret warning: stream clone requested but server has them disabled requesting all changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files new changesets 96ee1d7354c4 Stream clone while repo is changing: $ mkdir changing $ cd changing extension for delaying the server process so we reliably can modify the repo while cloning $ cat > delayer.py <<EOF > import time > from mercurial import extensions, vfs > def __call__(orig, self, path, *args, **kwargs): > if path == 'data/f1.i': > time.sleep(2) > return orig(self, path, *args, **kwargs) > extensions.wrapfunction(vfs.vfs, '__call__', __call__) > EOF prepare repo with small and big file to cover both code paths in emitrevlogdata $ hg init repo $ touch repo/f1 $ $TESTDIR/seq.py 50000 > repo/f2 $ hg -R repo ci -Aqm "0" $ hg serve -R repo -p $HGPORT1 -d --pid-file=hg.pid --config extensions.delayer=delayer.py $ cat hg.pid >> $DAEMON_PIDS clone while modifying the repo between stating file with write lock and actually serving file content $ hg clone -q --stream -U http://localhost:$HGPORT1 clone & $ sleep 1 $ echo >> repo/f1 $ echo >> repo/f2 $ hg -R repo ci -m "1" $ wait $ hg -R clone id 000000000000 $ cd .. Stream repository with bookmarks -------------------------------- (revert introduction of secret changeset) $ hg -R server phase --draft 'secret()' add a bookmark $ hg -R server bookmark -r tip some-bookmark clone it #if stream-legacy $ hg clone --stream http://localhost:$HGPORT with-bookmarks streaming all changes 1027 files to transfer, 96.3 KB of data transferred 96.3 KB in * seconds (*) (glob) searching for changes no changes found updating to branch default 1025 files updated, 0 files merged, 0 files removed, 0 files unresolved #endif #if stream-bundle2 $ hg clone --stream http://localhost:$HGPORT with-bookmarks streaming all changes 1033 files to transfer, 96.6 KB of data transferred 96.6 KB in * seconds (* */sec) (glob) updating to branch default 1025 files updated, 0 files merged, 0 files removed, 0 files unresolved #endif $ hg -R with-bookmarks bookmarks some-bookmark 1:c17445101a72 Stream repository with phases ----------------------------- Clone as publishing $ hg -R server phase -r 'all()' 0: draft 1: draft #if stream-legacy $ hg clone --stream http://localhost:$HGPORT phase-publish streaming all changes 1027 files to transfer, 96.3 KB of data transferred 96.3 KB in * seconds (*) (glob) searching for changes no changes found updating to branch default 1025 files updated, 0 files merged, 0 files removed, 0 files unresolved #endif #if stream-bundle2 $ hg clone --stream http://localhost:$HGPORT phase-publish streaming all changes 1033 files to transfer, 96.6 KB of data transferred 96.6 KB in * seconds (* */sec) (glob) updating to branch default 1025 files updated, 0 files merged, 0 files removed, 0 files unresolved #endif $ hg -R phase-publish phase -r 'all()' 0: public 1: public Clone as non publishing $ cat << EOF >> server/.hg/hgrc > [phases] > publish = False > EOF $ killdaemons.py $ hg -R server serve -p $HGPORT -d --pid-file=hg.pid $ cat hg.pid > $DAEMON_PIDS #if stream-legacy With v1 of the stream protocol, changeset are always cloned as public. It make stream v1 unsuitable for non-publishing repository. $ hg clone --stream http://localhost:$HGPORT phase-no-publish streaming all changes 1027 files to transfer, 96.3 KB of data transferred 96.3 KB in * seconds (*) (glob) searching for changes no changes found updating to branch default 1025 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg -R phase-no-publish phase -r 'all()' 0: public 1: public #endif #if stream-bundle2 $ hg clone --stream http://localhost:$HGPORT phase-no-publish streaming all changes 1034 files to transfer, 96.7 KB of data transferred 96.7 KB in * seconds (* */sec) (glob) updating to branch default 1025 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg -R phase-no-publish phase -r 'all()' 0: draft 1: draft #endif $ killdaemons.py #if stream-legacy With v1 of the stream protocol, changeset are always cloned as public. There's no obsolescence markers exchange in stream v1. #endif #if stream-bundle2 Stream repository with obsolescence ----------------------------------- Clone non-publishing with obsolescence $ cat >> $HGRCPATH << EOF > [experimental] > evolution=all > EOF $ cd server $ echo foo > foo $ hg -q commit -m 'about to be pruned' $ hg debugobsolete `hg log -r . -T '{node}'` -d '0 0' -u test --record-parents obsoleted 1 changesets $ hg up null -q $ hg log -T '{rev}: {phase}\n' 1: draft 0: draft $ hg serve -p $HGPORT -d --pid-file=hg.pid $ cat hg.pid > $DAEMON_PIDS $ cd .. $ hg clone -U --stream http://localhost:$HGPORT with-obsolescence streaming all changes 1035 files to transfer, 97.1 KB of data transferred 97.1 KB in * seconds (* */sec) (glob) $ hg -R with-obsolescence log -T '{rev}: {phase}\n' 1: draft 0: draft $ hg debugobsolete -R with-obsolescence 50382b884f66690b7045cac93a540cba4d4c906f 0 {c17445101a72edac06facd130d14808dfbd5c7c2} (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'} $ hg clone -U --stream --config experimental.evolution=0 http://localhost:$HGPORT with-obsolescence-no-evolution streaming all changes remote: abort: server has obsolescence markers, but client cannot receive them via stream clone abort: pull failed on remote [255] $ killdaemons.py #endif