changelog: lazily parse description
Before, the description field was converted to a localstr at parse
time. With this patch, we store the raw description and convert to
a localstr when it is first accessed.
We see a revset speedup for revsets that don't access the description:
author(mpm)
0.896565
0.914234
0.869085
date(2015)
0.878797
0.891980
0.862525
extra(rebase_source)
0.865446
0.912514
0.871500
author(mpm) or author(greg)
1.801832
1.860402
1.791589
date(2015) or branch(default)
0.968276
0.994673
0.974027
author(mpm) or desc(bug) or date(2015) or extra(rebase_source)
3.656193
3.721032
3.643593
As you can see, most of these revsets are already faster than from
before this refactoring: we have already offset the performance
loss from the introduction of the new class representing parsed
changelog entries!
#require serve
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(str(i))
$ hg -q commit -A -m 'add a lot of files'
$ hg st
$ hg serve -p $HGPORT -d --pid-file=hg.pid
$ cat hg.pid >> $DAEMON_PIDS
$ cd ..
Basic clone
$ hg clone --uncompressed -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
Clone with background file closing enabled
$ hg --debug --config worker.backgroundclose=true --config worker.backgroundcloseminfilecount=1 clone --uncompressed -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
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: "listkeys" (params: 1 mandatory) supported
bundle2-input-bundle: 1 parts total
checking for updated bookmarks
preparing listkeys for "phases"
sending listkeys command
received listkey for "phases": 58 bytes