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Gilles (Gilles Dubuc)
Senior Performance Engineer, WMF

Today

  • Clear sailing ahead.

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Saturday

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User Details

User Since
Oct 7 2014, 8:24 AM (249 w, 2 d)
Availability
Away Away until Aug 18.
IRC Nick
gilles
LDAP User
Gilles
MediaWiki User
GDubuc (WMF) [ Global Accounts ]

Recent Activity

Wed, Jul 3

Gilles added a comment to T226707: cwebp chokes on YCCK JPGs.

This needs a thumbor-plugins Debian package update with the latest code + deployment.

Wed, Jul 3, 11:25 AM · Thumbor, Performance-Team

Sat, Jun 29

Gilles committed rTHMBREXTf0e5319c7b84: Version bump (authored by Gilles).
Version bump
Sat, Jun 29, 2:09 PM

Thu, Jun 27

Gilles added a comment to T226373: Swift object servers become briefly unresponsive on a regular basis.

At a glance on a given proxy the same object doesn't occur multiple times in a row. But the same destination object server has timeouts for several objects in a row, over a period of a few seconds.

Thu, Jun 27, 10:11 PM · User-jijiki, serviceops, Patch-For-Review, media-storage, Operations
Gilles committed rTHMBREXT6975dae96666: Serve JPG when WEBP conversion fails (authored by Gilles).
Serve JPG when WEBP conversion fails
Thu, Jun 27, 10:01 PM
Gilles committed rTHMBREXTe7d48d925c84: Serve JPG when WEBP conversion fails (authored by Gilles).
Serve JPG when WEBP conversion fails
Thu, Jun 27, 12:27 PM
Gilles added a comment to T226707: cwebp chokes on YCCK JPGs.

Alternatively, we could just stick to the JPG we've already generated when a webp is requested and the cwebp command fails. It will probably make for simpler code and foolproof for other unforeseen situations where cwebp fails. What's unclear still is why things are hanging in case of cwebp command error.

Thu, Jun 27, 11:57 AM · Thumbor, Performance-Team
Gilles renamed T226707: cwebp chokes on YCCK JPGs from Constitution_of_India.jpg webp variant stuck in poolcounter per-original throttle to cwebp chokes on YCCK JPGs.
Thu, Jun 27, 11:53 AM · Thumbor, Performance-Team
Gilles added a comment to T226707: cwebp chokes on YCCK JPGs.

It seems like cwebp doesn't like the YCCK color space that file uses:

Thu, Jun 27, 11:53 AM · Thumbor, Performance-Team
Gilles created T226707: cwebp chokes on YCCK JPGs.
Thu, Jun 27, 11:42 AM · Thumbor, Performance-Team
Gilles added a comment to T226373: Swift object servers become briefly unresponsive on a regular basis.

Error rate hasn't gone down at all, now we're just getting errors that time out at 1s instead of 0.5s...

Thu, Jun 27, 11:05 AM · User-jijiki, serviceops, Patch-For-Review, media-storage, Operations
Gilles added a comment to T225946: [SPIKE 8hrs] Determine Appropriate Action for Mobile Frontend lazy-loading images performance issues.

Cool, the remaining painting is certainly due to the section that appears, but doesn't block the click event handling, therefore keeping the page responsive.

Thu, Jun 27, 9:43 AM · Readers-Web-Backlog (Tracking), Performance-Team (Radar), MobileFrontend
Gilles added a comment to T226318: Thumbnail rendering of complex SVG file leads to Error 500 or Error 429 instead of Error 408.

I've seen this one stuck in poolcounter throttling for a while, it's definitely quite hot. I'll check if it's renderable at all. Usually images that can't render get rather throttled by the failure throttle, not by poolcounter.

Thu, Jun 27, 8:56 AM · Traffic, Operations, Thumbor, MediaWiki-File-management, Commons, Multimedia
Gilles reassigned T219486: Send peering requests to AS with the worst TTFB from Gilles to ayounsi.
Thu, Jun 27, 8:21 AM · Traffic, Performance-Team, Operations
Gilles updated subscribers of T217318: A Large-scale Study of Wikipedia Users' Quality of Experience: data release.

@JBennett @JFishback_WMF could we get an update on when this might get looked at?

Thu, Jun 27, 6:07 AM · Research, Security-Team, WMF-Legal, Analytics, Performance-Team

Tue, Jun 25

Gilles added a comment to T219486: Send peering requests to AS with the worst TTFB.

So I should do that for that list? Are you ok with me requesting peering from all of these AS?

Tue, Jun 25, 8:21 PM · Traffic, Performance-Team, Operations
Gilles added a comment to T225998: Study performance impact of disabling TCP selective acknowledgments.

Remember that x-cache headers are read from right to left. Trying this out right now with a clear cache and a clear local storage I get the following headers for all assets on the page:

Tue, Jun 25, 8:19 PM · Patch-For-Review, Traffic, Performance-Team, Performance, Operations
Gilles added a comment to T225998: Study performance impact of disabling TCP selective acknowledgments.

It does for text, when your IP gets hashed to a specific Varnish frontend, you get all "small" requests from it. I.e. anything below the size threshold to be stored in Varnish frontends.

Tue, Jun 25, 8:12 PM · Patch-For-Review, Traffic, Performance-Team, Performance, Operations
Gilles added a comment to T226318: Thumbnail rendering of complex SVG file leads to Error 500 or Error 429 instead of Error 408.

A lot of files fail to render for various reasons, and end up as 429s because we don't want to constantly retry rendering a failing file, that would be a waste of resources. See Failure throttling documentation here: https://wikitech.wikimedia.org/wiki/Thumbor#Throttling

Tue, Jun 25, 1:32 PM · Traffic, Operations, Thumbor, MediaWiki-File-management, Commons, Multimedia
Gilles added a comment to T219486: Send peering requests to AS with the worst TTFB.

Now that the AS report is collecting more data, I've manually compiled a list of AS we could directly peer with (and don't yet), having checked that we have at least one IX in common.

Tue, Jun 25, 11:02 AM · Traffic, Performance-Team, Operations
Gilles closed T225403: Investigate increase in First Visual Change mobile enwiki as Resolved.

Looking at June 16 - now. Shape of the ramp-up during that period:

Tue, Jun 25, 9:03 AM · Performance-Team
Gilles created P8651 Hive queries to investigate Chrome 74 vs 75 RUM metrics.
Tue, Jun 25, 9:02 AM · Performance-Team
Gilles edited P8650 Hive queries to check results of SACK A/B test.
Tue, Jun 25, 8:30 AM · Performance-Team
Gilles added a comment to T225998: Study performance impact of disabling TCP selective acknowledgments.

Hive queries used, for reference: P8650

Tue, Jun 25, 8:28 AM · Patch-For-Review, Traffic, Performance-Team, Performance, Operations
Gilles created P8650 Hive queries to check results of SACK A/B test.
Tue, Jun 25, 8:27 AM · Performance-Team
Gilles added a comment to T225998: Study performance impact of disabling TCP selective acknowledgments.

The results are in, looking at loadEventEnd since yesterday 14:00 GMT until now.

Tue, Jun 25, 8:26 AM · Patch-For-Review, Traffic, Performance-Team, Performance, Operations
Gilles added a comment to T226025: Expensive viewport size access in Reference Drawers.

Yes, it's the overlay at the bottom of the screen that happens when clicking on a reference link. It's affecting everyone, not just beta users.

Tue, Jun 25, 7:12 AM · Performance-Team (Radar), Readers-Web-Backlog, MobileFrontend

Mon, Jun 24

Gilles added a comment to T225403: Investigate increase in First Visual Change mobile enwiki.

75 is widely deployed now

Mon, Jun 24, 8:05 PM · Performance-Team
Gilles claimed T225403: Investigate increase in First Visual Change mobile enwiki.
Mon, Jun 24, 8:05 PM · Performance-Team
Gilles moved T225998: Study performance impact of disabling TCP selective acknowledgments from Inbox to Doing on the Performance-Team board.
Mon, Jun 24, 8:01 PM · Patch-For-Review, Traffic, Performance-Team, Performance, Operations
Gilles claimed T225998: Study performance impact of disabling TCP selective acknowledgments.
Mon, Jun 24, 8:01 PM · Patch-For-Review, Traffic, Performance-Team, Performance, Operations
Gilles edited projects for T226025: Expensive viewport size access in Reference Drawers, added: Performance-Team (Radar); removed Performance-Team.
Mon, Jun 24, 8:01 PM · Performance-Team (Radar), Readers-Web-Backlog, MobileFrontend
Gilles edited projects for T226048: Sometimes pages load slowly for users routed to the Amsterdam data center (due to some factor outside of Wikimedia cluster), added: Performance-Team (Radar); removed Performance-Team.
Mon, Jun 24, 8:01 PM · CommRel-Specialists-Support (Jul-Sep-2019), User-notice, Performance-Team (Radar), Operations, Traffic, Performance
Gilles moved T226182: Alerts fired for SpeedIndex on mobile even though we should check for mwCentralNoticeBanner from Inbox to Backlog: Small & Maintenance on the Performance-Team board.
Mon, Jun 24, 8:00 PM · Performance-Team, WebPageTest
Gilles assigned T226182: Alerts fired for SpeedIndex on mobile even though we should check for mwCentralNoticeBanner to Peter.
Mon, Jun 24, 8:00 PM · Performance-Team, WebPageTest
Gilles added a comment to T226375: Investigate esams text varnish backend fetch failures.
Mon, Jun 24, 10:16 AM · Patch-For-Review, Operations, Traffic
Gilles added a comment to T226373: Swift object servers become briefly unresponsive on a regular basis.

Config value to increase that timeout: https://github.com/openstack/swift/blob/4ee9545805f52ff0da5c56ab04abf6f053b31a50/etc/proxy-server.conf-sample#L148

Mon, Jun 24, 9:10 AM · User-jijiki, serviceops, Patch-For-Review, media-storage, Operations
Gilles created T226373: Swift object servers become briefly unresponsive on a regular basis.
Mon, Jun 24, 9:09 AM · User-jijiki, serviceops, Patch-For-Review, media-storage, Operations
Gilles added a comment to T226318: Thumbnail rendering of complex SVG file leads to Error 500 or Error 429 instead of Error 408.

I suspect it's an issue at the Swift level, possibly a capacity problem with the added Thumbnail miss load. I'm seeing these errors happening frequently on the swift proxy:

Mon, Jun 24, 8:58 AM · Traffic, Operations, Thumbor, MediaWiki-File-management, Commons, Multimedia
Gilles added a comment to T226318: Thumbnail rendering of complex SVG file leads to Error 500 or Error 429 instead of Error 408.

We have a higher volume of thumbnail rendering than usual due to the deployment of T216339: Normalize thumbnail request URLs in Varnish to avoid cachebusting, which results in twice the amount of 503s.

Mon, Jun 24, 8:31 AM · Traffic, Operations, Thumbor, MediaWiki-File-management, Commons, Multimedia

Fri, Jun 21

Gilles closed T216339: Normalize thumbnail request URLs in Varnish to avoid cachebusting as Resolved.

This has caused a spike of thumbor thumbnailing requests, by virtue of making some objects hotter through deduplication, making them pass the webp hotness threshold.

Fri, Jun 21, 1:58 PM · Patch-For-Review, Traffic, Performance-Team, Operations
Gilles closed T216339: Normalize thumbnail request URLs in Varnish to avoid cachebusting, a subtask of T211661: Automatically clean up unused thumbnails in Swift, as Resolved.
Fri, Jun 21, 1:58 PM · User-jijiki, Patch-For-Review, Traffic, media-storage, Operations, Performance-Team
Gilles reopened T216339: Normalize thumbnail request URLs in Varnish to avoid cachebusting as "Open".
Fri, Jun 21, 9:45 AM · Patch-For-Review, Traffic, Performance-Team, Operations
Gilles reopened T216339: Normalize thumbnail request URLs in Varnish to avoid cachebusting, a subtask of T211661: Automatically clean up unused thumbnails in Swift, as Open.
Fri, Jun 21, 9:45 AM · User-jijiki, Patch-For-Review, Traffic, media-storage, Operations, Performance-Team
Gilles added a comment to T211661: Automatically clean up unused thumbnails in Swift.

Nevermind, this was the Vagrant patch... I'm going to make the production one now

Fri, Jun 21, 8:35 AM · User-jijiki, Patch-For-Review, Traffic, media-storage, Operations, Performance-Team
Gilles added a comment to T211661: Automatically clean up unused thumbnails in Swift.

It can wait. Basically I want to figure out where we're at in regards to that patch, what's actually deployed and running.

Fri, Jun 21, 8:30 AM · User-jijiki, Patch-For-Review, Traffic, media-storage, Operations, Performance-Team
Gilles added a comment to T211661: Automatically clean up unused thumbnails in Swift.

@jijiki @fgiunchedi Have Swift proxies been restarted since https://gerrit.wikimedia.org/r/#/c/mediawiki/vagrant/+/489021/ was merged?

Fri, Jun 21, 8:25 AM · User-jijiki, Patch-For-Review, Traffic, media-storage, Operations, Performance-Team
Gilles added a comment to T211661: Automatically clean up unused thumbnails in Swift.

@aaron your concern has been addressed now, the Varnish-level thumbnail URL normalization is live. We can now proceed with the header-based expiry plan.

Fri, Jun 21, 8:23 AM · User-jijiki, Patch-For-Review, Traffic, media-storage, Operations, Performance-Team
Gilles changed the status of T211661: Automatically clean up unused thumbnails in Swift from Stalled to Open.
Fri, Jun 21, 8:22 AM · User-jijiki, Patch-For-Review, Traffic, media-storage, Operations, Performance-Team
Gilles closed T216339: Normalize thumbnail request URLs in Varnish to avoid cachebusting as Resolved.
Fri, Jun 21, 8:22 AM · Patch-For-Review, Traffic, Performance-Team, Operations
Gilles closed T216339: Normalize thumbnail request URLs in Varnish to avoid cachebusting, a subtask of T211661: Automatically clean up unused thumbnails in Swift, as Resolved.
Fri, Jun 21, 8:22 AM · User-jijiki, Patch-For-Review, Traffic, media-storage, Operations, Performance-Team
Gilles added a comment to T220811: Test Thumbor OpenCL smart cropping on stat1005.

@elukey I have Thumbor configured to do smart cropping, but with @MoritzMuehlenhoff we verified using both radeontop and rocm_smi and it's not hitting the GPU.

Fri, Jun 21, 7:45 AM · Patch-For-Review, User-jijiki, Thumbor, Performance-Team
Gilles added a comment to T220811: Test Thumbor OpenCL smart cropping on stat1005.

First smart crop test on stat1005 successful (face detection):

Fri, Jun 21, 6:50 AM · Patch-For-Review, User-jijiki, Thumbor, Performance-Team

Thu, Jun 20

Tgr awarded Blog Post: Tracking down slow event handlers with Event Timing a Yellow Medal token.
Thu, Jun 20, 5:57 PM · Performance-Team

Wed, Jun 19

Gilles published Blog Post: Tracking down slow event handlers with Event Timing.
Wed, Jun 19, 3:17 PM · Performance-Team
Gilles added a comment to T209572: Feature Policy Reporting origin trial.

We should start getting reports onces eswiki and ruwiki have moved onto wmf.10 tomorrow

Wed, Jun 19, 2:20 PM · MW-1.34-notes (1.34.0-wmf.10; 2019-06-18), Security-Team, Performance-Team
Gilles changed the status of T216339: Normalize thumbnail request URLs in Varnish to avoid cachebusting from Stalled to Open.
Wed, Jun 19, 2:10 PM · Patch-For-Review, Traffic, Performance-Team, Operations
Gilles changed the status of T216339: Normalize thumbnail request URLs in Varnish to avoid cachebusting, a subtask of T211661: Automatically clean up unused thumbnails in Swift, from Stalled to Open.
Wed, Jun 19, 2:10 PM · User-jijiki, Patch-For-Review, Traffic, media-storage, Operations, Performance-Team
Gilles removed a project from T209572: Feature Policy Reporting origin trial: Patch-For-Review.
Wed, Jun 19, 2:10 PM · MW-1.34-notes (1.34.0-wmf.10; 2019-06-18), Security-Team, Performance-Team
Gilles closed T211906: Expose PHP7/HHVM to NavTiming in a header, send with navtiming beacon so we can use it as a dimension, a subtask of T176370: Migrate to PHP 7 in WMF production, as Resolved.
Wed, Jun 19, 2:09 PM · Core Platform Team (PHP7 (TEC4)), Patch-For-Review, TechCom-RFC (TechCom-Approved), User-ArielGlenn, HHVM, Operations
Gilles closed T211906: Expose PHP7/HHVM to NavTiming in a header, send with navtiming beacon so we can use it as a dimension as Resolved.

It's now being recorded:

Wed, Jun 19, 2:09 PM · Patch-For-Review, MW-1.34-notes (1.34.0-wmf.10; 2019-06-18), MediaWiki-extensions-NavigationTiming, Performance-Team
Gilles added a comment to T220811: Test Thumbor OpenCL smart cropping on stat1005.

@jijiki I also need python-opencv installed on that host, thanks :)

Wed, Jun 19, 1:56 PM · Patch-For-Review, User-jijiki, Thumbor, Performance-Team
Gilles added a comment to T216594: Layout Stability API origin trial.

Whether we'll be able to revisit this largely depends on the second bug (events occurring on resize) being backported to 76, which is being discussed right now.

Wed, Jun 19, 7:34 AM · MW-1.33-notes (1.33.0-wmf.23; 2019-03-26), Performance-Team

Jun 18 2019

Gilles added a comment to T225946: [SPIKE 8hrs] Determine Appropriate Action for Mobile Frontend lazy-loading images performance issues.

Similar issue found in lazy loaded references: T226025: Expensive viewport size access in Reference Drawers

Jun 18 2019, 2:30 PM · Readers-Web-Backlog (Tracking), Performance-Team (Radar), MobileFrontend
Gilles closed T216597: Event Timing origin trial as Resolved.

Now, I think I've got the most common slow events covered. There is a long tail and always more to fix, of course.

Jun 18 2019, 2:22 PM · MW-1.34-notes (1.34.0-wmf.3; 2019-04-30), MW-1.33-notes (1.33.0-wmf.25; 2019-04-09), Performance-Team
Gilles closed T216597: Event Timing origin trial, a subtask of T216595: Add Origin Trial support to MediaWiki, as Resolved.
Jun 18 2019, 2:22 PM · MW-1.33-notes (1.33.0-wmf.19; 2019-02-26), Performance-Team
Gilles added a comment to T216597: Event Timing origin trial.

The next "big" offenders (many order of magnitude smaller than the previous one, which has 976,911 occurrences to date) in terms of slow click handlers are:

Jun 18 2019, 2:20 PM · MW-1.34-notes (1.34.0-wmf.3; 2019-04-30), MW-1.33-notes (1.33.0-wmf.25; 2019-04-09), Performance-Team
Gilles added a project to T226025: Expensive viewport size access in Reference Drawers: Performance-Team.
Jun 18 2019, 2:19 PM · Performance-Team (Radar), Readers-Web-Backlog, MobileFrontend
Gilles created T226025: Expensive viewport size access in Reference Drawers.
Jun 18 2019, 2:19 PM · Performance-Team (Radar), Readers-Web-Backlog, MobileFrontend
Gilles updated the task description for T226023: Media Viewer detach/shutdown can be expensive.
Jun 18 2019, 1:47 PM · MediaViewer, Multimedia
Gilles updated the task description for T226023: Media Viewer detach/shutdown can be expensive.
Jun 18 2019, 1:46 PM · MediaViewer, Multimedia
Restricted Application added a project to T226023: Media Viewer detach/shutdown can be expensive: Multimedia.
Jun 18 2019, 1:45 PM · MediaViewer, Multimedia
Gilles updated the post content for Blog Post: Performance perception: correlation to RUM metrics.
Jun 18 2019, 10:12 AM · Performance-Team
Gilles added a comment to T225998: Study performance impact of disabling TCP selective acknowledgments.

loadEventEnd seems to have regressed around the time the change was deployed. In the week-over-week you can see that the curves seem to diverge past that point, increasing the week-over-week difference:

Jun 18 2019, 9:47 AM · Patch-For-Review, Traffic, Performance-Team, Performance, Operations
Gilles added a project to T225998: Study performance impact of disabling TCP selective acknowledgments: Performance-Team.
Jun 18 2019, 9:40 AM · Patch-For-Review, Traffic, Performance-Team, Performance, Operations
Gilles added a comment to T216499: Priority Hints origin trial.

Looking at the newest data, there might be a slight preference towards high priority top image on mobile (86.45% satisfaction vs 85.5%, sample size 39,880). On desktop there's no visible difference.

Jun 18 2019, 9:40 AM · MW-1.34-notes (1.34.0-wmf.3; 2019-04-30), MW-1.33-notes (1.33.0-wmf.25; 2019-04-09), Performance-Team
Gilles added a comment to T216597: Event Timing origin trial.

Filed a task about the most common offender on long click event processing: T225946: [SPIKE 8hrs] Determine Appropriate Action for Mobile Frontend lazy-loading images performance issues

Jun 18 2019, 9:23 AM · MW-1.34-notes (1.34.0-wmf.3; 2019-04-30), MW-1.33-notes (1.33.0-wmf.25; 2019-04-09), Performance-Team
Gilles moved T216594: Layout Stability API origin trial from Doing to Blocked or Needs-CR on the Performance-Team board.
Jun 18 2019, 9:22 AM · MW-1.33-notes (1.33.0-wmf.23; 2019-03-26), Performance-Team
Gilles changed the status of T216594: Layout Stability API origin trial from Open to Stalled.

The upstream bugfixes have been committed:

Jun 18 2019, 9:22 AM · MW-1.33-notes (1.33.0-wmf.23; 2019-03-26), Performance-Team
Gilles changed the status of T216594: Layout Stability API origin trial, a subtask of T216595: Add Origin Trial support to MediaWiki, from Open to Stalled.
Jun 18 2019, 9:22 AM · MW-1.33-notes (1.33.0-wmf.19; 2019-02-26), Performance-Team
Gilles closed T216598: Element Timing for Images origin trial as Resolved.

I've done all the analysis that I could think of for this one. It works, it's a pretty good metric, but for us it's not as good as FP/FCP and domInteractive in terms of correlation to user perception.

Jun 18 2019, 9:16 AM · MW-1.33-notes (1.33.0-wmf.23; 2019-03-26), Performance-Team
Gilles closed T216598: Element Timing for Images origin trial, a subtask of T216595: Add Origin Trial support to MediaWiki, as Resolved.
Jun 18 2019, 9:16 AM · MW-1.33-notes (1.33.0-wmf.19; 2019-02-26), Performance-Team
phuedx awarded T225946: [SPIKE 8hrs] Determine Appropriate Action for Mobile Frontend lazy-loading images performance issues a Mountain of Wealth token.
Jun 18 2019, 8:43 AM · Readers-Web-Backlog (Tracking), Performance-Team (Radar), MobileFrontend
Gilles updated the task description for T225946: [SPIKE 8hrs] Determine Appropriate Action for Mobile Frontend lazy-loading images performance issues.
Jun 18 2019, 5:56 AM · Readers-Web-Backlog (Tracking), Performance-Team (Radar), MobileFrontend

Jun 17 2019

nray awarded T225946: [SPIKE 8hrs] Determine Appropriate Action for Mobile Frontend lazy-loading images performance issues a Like token.
Jun 17 2019, 11:17 PM · Readers-Web-Backlog (Tracking), Performance-Team (Radar), MobileFrontend
Gilles removed a project from T29658: SquidPurgeClient fails on FreeBSD; incorrect constants + MSG_EOR w/ SOCK_STREAM: Performance-Team.
Jun 17 2019, 8:18 PM · Core Platform Team (Security, stability, performance and scalability (TEC1)), MediaWiki-General
Gilles edited projects for T225578: EventLogging needs to enque events to avoid draining users' battery on mobile , added: Performance-Team (Radar); removed Performance-Team.
Jun 17 2019, 8:15 PM · Analytics-Kanban, Performance-Team (Radar), Analytics-EventLogging, Analytics
Gilles moved T225598: webpagetest-alerts grafana alert from Inbox to Doing on the Performance-Team board.
Jun 17 2019, 8:13 PM · Performance-Team
Gilles edited projects for T225642: Allow async foreign set/delete WAN cache operations in mcrouter, added: Performance-Team (Radar); removed Performance-Team.
Jun 17 2019, 8:13 PM · User-Elukey, Patch-For-Review, Performance-Team (Radar), Availability (MediaWiki-MultiDC), Operations
Gilles moved T225655: PHP Warning "headers already sent" from MediaWiki::preOutputCommit during SpecialCentralAutoLogin from Inbox to Doing on the Performance-Team board.
Jun 17 2019, 8:12 PM · MW-1.34-notes (1.34.0-wmf.11; 2019-06-26), Performance-Team, MediaWiki-General, Wikimedia-production-error
Gilles assigned T225655: PHP Warning "headers already sent" from MediaWiki::preOutputCommit during SpecialCentralAutoLogin to aaron.
Jun 17 2019, 8:12 PM · MW-1.34-notes (1.34.0-wmf.11; 2019-06-26), Performance-Team, MediaWiki-General, Wikimedia-production-error
Gilles moved T225739: Create Icinga check for navtiming.py service health from Inbox to Backlog: Future Goals on the Performance-Team board.
Jun 17 2019, 8:10 PM · MediaWiki-extensions-NavigationTiming, observability, Performance-Team
Gilles moved T225740: Create Icinga check for Coal service health from Inbox to Backlog: Future Goals on the Performance-Team board.
Jun 17 2019, 8:10 PM · observability, Performance-Team
Gilles moved T225742: Send logs from webperf processor services to Logstash from Inbox to Backlog: Future Goals on the Performance-Team board.
Jun 17 2019, 8:10 PM · Wikimedia-Logstash, observability, Performance-Team
Gilles edited projects for T225775: Investigate purging expired watchlist items as a result of , added: Performance-Team (Radar); removed Performance-Team.
Jun 17 2019, 8:08 PM · Performance-Team (Radar), Community-Tech
Gilles moved T225842: Add primitive to ResourceLoaderFileModule for combining groups of scripts & dependencies from Inbox to Backlog: Future Goals on the Performance-Team board.
Jun 17 2019, 8:06 PM · Performance-Team, MediaWiki-ResourceLoader, Front-end-Standards-Group
Gilles moved T225547: Collect Network​Information rtt and downlink from Inbox to Doing on the Performance-Team board.
Jun 17 2019, 8:06 PM · Patch-For-Review, Performance-Team
Gilles edited projects for T225845: Remove support for automatic 'dir' parameter inference for load.php urls , added: Performance-Team (Radar); removed Performance-Team.
Jun 17 2019, 8:06 PM · Patch-For-Review, Performance-Team (Radar), patch-welcome, MediaWiki-ResourceLoader
Gilles edited projects for T225899: Set the default parameter for load.php in client-side by a parameter in server-side, added: Performance-Team (Radar); removed Performance-Team.
Jun 17 2019, 8:06 PM · MW-1.34-notes (1.34.0-wmf.13; 2019-07-09), Performance-Team (Radar), MediaWiki-ResourceLoader
Gilles moved T225967: Restore xff config for coal.* metrics from Inbox to Doing on the Performance-Team board.
Jun 17 2019, 8:05 PM · Performance-Team, MediaWiki-extensions-NavigationTiming
Gilles edited projects for T225946: [SPIKE 8hrs] Determine Appropriate Action for Mobile Frontend lazy-loading images performance issues, added: Performance-Team (Radar); removed Performance-Team.
Jun 17 2019, 8:04 PM · Readers-Web-Backlog (Tracking), Performance-Team (Radar), MobileFrontend