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epriestley 9cf3b3bbf8 Count lines in build log slices more cheaply
Summary:
See PHI766. Ref T13164. Build log chunk processing does a `preg_split()` on slices, but this isn't terribly efficient.

We can get the same count more cheaply by just using `substr_count()` a few times.

(I also tried `preg_match_all()`, which was between the two in speed.)

Test Plan:
- Used `bin/harbormaster rebuild-log --id X --force` to rebuild logs. Verified that the linemap is identical before/after this change.
- Saw local time for the 18MB log in PHI766 drop from ~1.7s to ~900ms, and `preg_split()` drop out of the profiler (we're now spending the biggest chunk of time on `gzdeflate()`).

Reviewers: amckinley

Reviewed By: amckinley

Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam

Maniphest Tasks: T13164

Differential Revision: https://secure.phabricator.com/D19545
2018-07-30 08:25:17 -07:00
bin Add a "lock log" for debugging where locks are being held 2018-03-05 17:55:34 -08:00
conf Support "ssl.chain" in Aphlict configuration 2016-04-14 10:41:21 -07:00
externals Add profile images to Repositories 2017-06-12 07:51:39 -07:00
resources Allow the haunted comment panel ("Z") to take up more vertical room 2018-06-07 13:19:35 -07:00
scripts Update install_ubuntu.sh to the new age 2018-04-21 09:57:33 -07:00
src Count lines in build log slices more cheaply 2018-07-30 08:25:17 -07:00
support Append the intermediate chain to the "cert" parameter in Aphlict 2018-06-26 19:34:28 +00:00
webroot Allow the haunted comment panel ("Z") to take up more vertical room 2018-06-07 13:19:35 -07:00
.arcconfig Set "history.immutable" to "false" explicitly in .arcconfig 2016-08-03 08:12:49 -07:00
.arclint Begin adding test coverage to GitHub Events API parsers 2016-03-09 09:30:07 -08:00
.arcunit Use the configuration driven unit test engine 2015-08-11 07:57:11 +10:00
.editorconfig
.gitignore Make i18n string extraction faster and more flexible 2016-07-04 10:23:30 -07:00
LICENSE
NOTICE
README.md Remove push to IRC from "readme.md" too 2015-10-24 18:39:16 -07:00

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