Mercurial > hg
view tests/test-hgweb-raw.t @ 27475:a2e2a8fa5fd1
revlog: avoid string slice when decompressing u* chunks
Revlog chunks can be stored uncompressed. If the first byte of the
raw data is \0, we store the data as is. Else we prefix it with 'u'.
Before, we performed a string slice to strip out the 'u' prefix.
With this patch, we use a buffer to avoid an extra memory copy and
associated garbage collection overhead.
I was unable to verify any performance impact of this patch. For both
mozilla-central and the hg repos, the number of manifest revisions
with 'u' prefixes is very small - under 1%. So this change likely
isn't called enough to have an impact on manifest reading. However,
the reasoning behind this change is solid, so it should be safe.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Sun, 20 Dec 2015 16:00:27 -0800 |
parents | 4d2b9b304ad0 |
children | 636cf3f7620d |
line wrap: on
line source
#require serve Test raw style of hgweb $ hg init test $ cd test $ mkdir sub $ cat >'sub/some text%.txt' <<ENDSOME > This is just some random text > that will go inside the file and take a few lines. > It is very boring to read, but computers don't > care about things like that. > ENDSOME $ hg add 'sub/some text%.txt' $ hg commit -d "1 0" -m "Just some text" $ hg serve -p $HGPORT -A access.log -E error.log -d --pid-file=hg.pid $ cat hg.pid >> $DAEMON_PIDS $ (get-with-headers.py localhost:$HGPORT '?f=bf0ff59095c9;file=sub/some%20text%25.txt;style=raw' content-type content-length content-disposition) >getoutput.txt $ killdaemons.py hg.pid $ cat getoutput.txt 200 Script output follows content-type: application/binary content-length: 157 content-disposition: inline; filename="some text%.txt" This is just some random text that will go inside the file and take a few lines. It is very boring to read, but computers don't care about things like that. $ cat access.log error.log 127.0.0.1 - - [*] "GET /?f=bf0ff59095c9;file=sub/some%20text%25.txt;style=raw HTTP/1.1" 200 - (glob) $ rm access.log error.log $ hg serve -p $HGPORT -A access.log -E error.log -d --pid-file=hg.pid \ > --config web.guessmime=True $ cat hg.pid >> $DAEMON_PIDS $ (get-with-headers.py localhost:$HGPORT '?f=bf0ff59095c9;file=sub/some%20text%25.txt;style=raw' content-type content-length content-disposition) >getoutput.txt $ killdaemons.py hg.pid $ cat getoutput.txt 200 Script output follows content-type: text/plain; charset="ascii" content-length: 157 content-disposition: inline; filename="some text%.txt" This is just some random text that will go inside the file and take a few lines. It is very boring to read, but computers don't care about things like that. $ cat access.log error.log 127.0.0.1 - - [*] "GET /?f=bf0ff59095c9;file=sub/some%20text%25.txt;style=raw HTTP/1.1" 200 - (glob) $ cd ..