hg-cpython: fallback when encountering an unknown matcher
At this point in the process, nothing user-visible has happened, it is still
safe to fallback. This can happen now that we're going to be using
"container matchers" like unionmatcher and intersectionmatcher.
This is easier and less error-prone than recursive checking beforehand since
only the presence of a transformation case will allow the process to continue.
====================================
Test delta choice with sparse revlog
====================================
Sparse-revlog usually shows the most gain on Manifest. However, it is simpler
to general an appropriate file, so we test with a single file instead. The
goal is to observe intermediate snapshot being created.
We need a large enough file. Part of the content needs to be replaced
repeatedly while some of it changes rarely.
$ bundlepath="$TESTDIR/artifacts/cache/big-file-churn.hg"
$ expectedhash=`cat "$bundlepath".md5`
#if slow
$ if [ ! -f "$bundlepath" ]; then
> "$TESTDIR"/artifacts/scripts/generate-churning-bundle.py > /dev/null
> fi
#else
$ if [ ! -f "$bundlepath" ]; then
> echo 'skipped: missing artifact, run "'"$TESTDIR"'/artifacts/scripts/generate-churning-bundle.py"'
> exit 80
> fi
#endif
$ currenthash=`f -M "$bundlepath" | cut -d = -f 2`
$ if [ "$currenthash" != "$expectedhash" ]; then
> echo 'skipped: outdated artifact, md5 "'"$currenthash"'" expected "'"$expectedhash"'" run "'"$TESTDIR"'/artifacts/scripts/generate-churning-bundle.py"'
> exit 80
> fi
$ cat >> $HGRCPATH << EOF
> [format]
> sparse-revlog = yes
> maxchainlen = 15
> [storage]
> revlog.optimize-delta-parent-choice = yes
> revlog.reuse-external-delta = no
> EOF
$ hg init sparse-repo
$ cd sparse-repo
$ hg unbundle $bundlepath
adding changesets
adding manifests
adding file changes
added 5001 changesets with 5001 changes to 1 files (+89 heads)
new changesets 9706f5af64f4:d9032adc8114 (5001 drafts)
(run 'hg heads' to see heads, 'hg merge' to merge)
$ hg up
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
updated to "d9032adc8114: commit #5000"
89 other heads for branch "default"
$ hg log --stat -r 0:3
changeset: 0:9706f5af64f4
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: initial commit
SPARSE-REVLOG-TEST-FILE | 10500 ++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 10500 insertions(+), 0 deletions(-)
changeset: 1:724907deaa5e
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: commit #1
SPARSE-REVLOG-TEST-FILE | 1068 +++++++++++++++++++++++-----------------------
1 files changed, 534 insertions(+), 534 deletions(-)
changeset: 2:62c41bce3e5d
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: commit #2
SPARSE-REVLOG-TEST-FILE | 1068 +++++++++++++++++++++++-----------------------
1 files changed, 534 insertions(+), 534 deletions(-)
changeset: 3:348a9cbd6959
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: commit #3
SPARSE-REVLOG-TEST-FILE | 1068 +++++++++++++++++++++++-----------------------
1 files changed, 534 insertions(+), 534 deletions(-)
$ f -s .hg/store/data/*.d
.hg/store/data/_s_p_a_r_s_e-_r_e_v_l_o_g-_t_e_s_t-_f_i_l_e.d: size=58616973
$ hg debugrevlog *
format : 1
flags : generaldelta
revisions : 5001
merges : 625 (12.50%)
normal : 4376 (87.50%)
revisions : 5001
empty : 0 ( 0.00%)
text : 0 (100.00%)
delta : 0 (100.00%)
snapshot : 383 ( 7.66%)
lvl-0 : 3 ( 0.06%)
lvl-1 : 18 ( 0.36%)
lvl-2 : 62 ( 1.24%)
lvl-3 : 108 ( 2.16%)
lvl-4 : 191 ( 3.82%)
lvl-5 : 1 ( 0.02%)
deltas : 4618 (92.34%)
revision size : 58616973
snapshot : 9247844 (15.78%)
lvl-0 : 539532 ( 0.92%)
lvl-1 : 1467743 ( 2.50%)
lvl-2 : 1873820 ( 3.20%)
lvl-3 : 2326874 ( 3.97%)
lvl-4 : 3029118 ( 5.17%)
lvl-5 : 10757 ( 0.02%)
deltas : 49369129 (84.22%)
chunks : 5001
0x28 : 5001 (100.00%)
chunks size : 58616973
0x28 : 58616973 (100.00%)
avg chain length : 9
max chain length : 15
max chain reach : 27366701
compression ratio : 29
uncompressed data size (min/max/avg) : 346468 / 346472 / 346471
full revision size (min/max/avg) : 179288 / 180786 / 179844
inter-snapshot size (min/max/avg) : 10757 / 169507 / 22916
level-1 (min/max/avg) : 13905 / 169507 / 81541
level-2 (min/max/avg) : 10887 / 83873 / 30222
level-3 (min/max/avg) : 10911 / 43047 / 21545
level-4 (min/max/avg) : 10838 / 21390 / 15859
level-5 (min/max/avg) : 10757 / 10757 / 10757
delta size (min/max/avg) : 9672 / 108072 / 10690
deltas against prev : 3906 (84.58%)
where prev = p1 : 3906 (100.00%)
where prev = p2 : 0 ( 0.00%)
other : 0 ( 0.00%)
deltas against p1 : 649 (14.05%)
deltas against p2 : 63 ( 1.36%)
deltas against other : 0 ( 0.00%)
Test `debug-delta-find`
-----------------------
$ ls -1
SPARSE-REVLOG-TEST-FILE
$ hg debugdeltachain SPARSE-REVLOG-TEST-FILE | grep other | tail -1
4971 3 5 4930 other 19179 346472 427596 1.23414 15994877 15567281 36.40652 427596 179288 1.00000 5
$ hg debug-delta-find SPARSE-REVLOG-TEST-FILE 4971
DBG-DELTAS-SEARCH: SEARCH rev=4971
DBG-DELTAS-SEARCH: ROUND #1 - 2 candidates - search-down
DBG-DELTAS-SEARCH: CANDIDATE: rev=4962
DBG-DELTAS-SEARCH: type=snapshot-4
DBG-DELTAS-SEARCH: size=18296
DBG-DELTAS-SEARCH: base=4930
DBG-DELTAS-SEARCH: uncompressed-delta-size=30377
DBG-DELTAS-SEARCH: delta-search-time=* (glob)
DBG-DELTAS-SEARCH: DELTA: length=16872 (BAD)
DBG-DELTAS-SEARCH: CANDIDATE: rev=4971
DBG-DELTAS-SEARCH: type=snapshot-4
DBG-DELTAS-SEARCH: size=19179
DBG-DELTAS-SEARCH: base=4930
DBG-DELTAS-SEARCH: TOO-HIGH
DBG-DELTAS-SEARCH: ROUND #2 - 1 candidates - search-down
DBG-DELTAS-SEARCH: CANDIDATE: rev=4930
DBG-DELTAS-SEARCH: type=snapshot-3
DBG-DELTAS-SEARCH: size=39228
DBG-DELTAS-SEARCH: base=4799
DBG-DELTAS-SEARCH: uncompressed-delta-size=33050
DBG-DELTAS-SEARCH: delta-search-time=* (glob)
DBG-DELTAS-SEARCH: DELTA: length=19179 (GOOD)
DBG-DELTAS-SEARCH: ROUND #3 - 1 candidates - refine-down
DBG-DELTAS-SEARCH: CONTENDER: rev=4930 - length=19179
DBG-DELTAS-SEARCH: CANDIDATE: rev=4799
DBG-DELTAS-SEARCH: type=snapshot-2
DBG-DELTAS-SEARCH: size=50213
DBG-DELTAS-SEARCH: base=4623
DBG-DELTAS-SEARCH: uncompressed-delta-size=82661
DBG-DELTAS-SEARCH: delta-search-time=* (glob)
DBG-DELTAS-SEARCH: DELTA: length=49132 (BAD)
DBG-DELTAS: FILELOG:SPARSE-REVLOG-TEST-FILE: rev=4971: search-rounds=3 try-count=3 - delta-type=snapshot snap-depth=4 - p1-chain-length=15 p2-chain-length=-1 - duration=* (glob)
$ cd ..