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view tests/test-contrib-perf.t @ 39409:2fe21c65777e
internals: document CBOR utilization
I spoke with some people at Mozilla about CBOR and they advised me
that we should be careful about the subset of CBOR we use in order
to mitigate security, performance, and compatibility concerns.
This commit establishes a document that attempts to formalize our
use of CBOR.
Its main limitations are on what types are allowed. It explicitly
enumerates which types are supported. Notable missing features
include:
* Indefinite-length arrays and maps
* Text strings (bytes all the way)
* Floats
* Date/time types
* Big integers
* Use of indefinite-length byte strings for map keys, values in
containers.
If we have a need for any of these, we can have a discussion about
them when the time comes.
Differential Revision: https://phab.mercurial-scm.org/D4412
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Tue, 28 Aug 2018 20:27:36 -0700 |
parents | c03c5f528e9b |
children | 8643219146e1 |
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#require test-repo Set vars: $ . "$TESTDIR/helpers-testrepo.sh" $ CONTRIBDIR="$TESTDIR/../contrib" Prepare repo: $ hg init $ echo this is file a > a $ hg add a $ hg commit -m first $ echo adding to file a >> a $ hg commit -m second $ echo adding more to file a >> a $ hg commit -m third $ hg up -r 0 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo merge-this >> a $ hg commit -m merge-able created new head $ hg up -r 2 1 files updated, 0 files merged, 0 files removed, 0 files unresolved perfstatus $ cat >> $HGRCPATH << EOF > [extensions] > perfstatusext=$CONTRIBDIR/perf.py > [perf] > presleep=0 > stub=on > parentscount=1 > EOF $ hg help perfstatusext perfstatusext extension - helper extension to measure performance list of commands: perfaddremove (no help text available) perfancestors (no help text available) perfancestorset (no help text available) perfannotate (no help text available) perfbdiff benchmark a bdiff between revisions perfbookmarks benchmark parsing bookmarks from disk to memory perfbranchmap benchmark the update of a branchmap perfbranchmapload benchmark reading the branchmap perfbundleread Benchmark reading of bundle files. perfcca (no help text available) perfchangegroupchangelog Benchmark producing a changelog group for a changegroup. perfchangeset (no help text available) perfctxfiles (no help text available) perfdiffwd Profile diff of working directory changes perfdirfoldmap (no help text available) perfdirs (no help text available) perfdirstate (no help text available) perfdirstatedirs (no help text available) perfdirstatefoldmap (no help text available) perfdirstatewrite (no help text available) perffncacheencode (no help text available) perffncacheload (no help text available) perffncachewrite (no help text available) perfheads (no help text available) perfindex (no help text available) perflinelogedits (no help text available) perfloadmarkers benchmark the time to parse the on-disk markers for a repo perflog (no help text available) perflookup (no help text available) perflrucachedict (no help text available) perfmanifest benchmark the time to read a manifest from disk and return a usable perfmergecalculate (no help text available) perfmoonwalk benchmark walking the changelog backwards perfnodelookup (no help text available) perfparents (no help text available) perfpathcopies (no help text available) perfphases benchmark phasesets computation perfphasesremote benchmark time needed to analyse phases of the remote server perfrawfiles (no help text available) perfrevlogchunks Benchmark operations on revlog chunks. perfrevlogindex Benchmark operations against a revlog index. perfrevlogrevision Benchmark obtaining a revlog revision. perfrevlogrevisions Benchmark reading a series of revisions from a revlog. perfrevrange (no help text available) perfrevset benchmark the execution time of a revset perfstartup (no help text available) perfstatus (no help text available) perftags (no help text available) perftemplating test the rendering time of a given template perfunidiff benchmark a unified diff between revisions perfvolatilesets benchmark the computation of various volatile set perfwalk (no help text available) perfwrite microbenchmark ui.write (use 'hg help -v perfstatusext' to show built-in aliases and global options) $ hg perfaddremove $ hg perfancestors $ hg perfancestorset 2 $ hg perfannotate a $ hg perfbdiff -c 1 $ hg perfbdiff --alldata 1 $ hg perfunidiff -c 1 $ hg perfunidiff --alldata 1 $ hg perfbookmarks $ hg perfbranchmap $ hg perfcca $ hg perfchangegroupchangelog $ hg perfchangeset 2 $ hg perfctxfiles 2 $ hg perfdiffwd $ hg perfdirfoldmap $ hg perfdirs $ hg perfdirstate $ hg perfdirstatedirs $ hg perfdirstatefoldmap $ hg perfdirstatewrite #if repofncache $ hg perffncacheencode $ hg perffncacheload $ hg debugrebuildfncache fncache already up to date $ hg perffncachewrite $ hg debugrebuildfncache fncache already up to date #endif $ hg perfheads $ hg perfindex $ hg perflinelogedits -n 1 $ hg perfloadmarkers $ hg perflog $ hg perflookup 2 $ hg perflrucache $ hg perfmanifest 2 $ hg perfmanifest -m 44fe2c8352bb3a478ffd7d8350bbc721920134d1 $ hg perfmanifest -m 44fe2c8352bb abort: manifest revision must be integer or full node [255] $ hg perfmergecalculate -r 3 $ hg perfmoonwalk $ hg perfnodelookup 2 $ hg perfpathcopies 1 2 $ hg perfrawfiles 2 $ hg perfrevlogindex -c #if reporevlogstore $ hg perfrevlogrevisions .hg/store/data/a.i #endif $ hg perfrevlogrevision -m 0 $ hg perfrevlogchunks -c $ hg perfrevrange $ hg perfrevset 'all()' $ hg perfstartup $ hg perfstatus $ hg perftags $ hg perftemplating $ hg perfvolatilesets $ hg perfwalk $ hg perfparents test actual output ------------------ normal output: $ hg perfheads --config perf.stub=no ! wall * comb * user * sys * (best of *) (glob) detailed output: $ hg perfheads --config perf.all-timing=yes --config perf.stub=no ! wall * comb * user * sys * (best of *) (glob) ! wall * comb * user * sys * (max of *) (glob) ! wall * comb * user * sys * (avg of *) (glob) ! wall * comb * user * sys * (median of *) (glob) Check perf.py for historical portability ---------------------------------------- $ cd "$TESTDIR/.." $ (testrepohg files -r 1.2 glob:mercurial/*.c glob:mercurial/*.py; > testrepohg files -r tip glob:mercurial/*.c glob:mercurial/*.py) | > "$TESTDIR"/check-perf-code.py contrib/perf.py contrib/perf.py:\d+: (re) > from mercurial import ( import newer module separately in try clause for early Mercurial contrib/perf.py:\d+: (re) > from mercurial import ( import newer module separately in try clause for early Mercurial [1]