RESOLVED REMIND169179
WebContent process often uses 100% CPU on tabelog.com 
https://bugs.webkit.org/show_bug.cgi?id=169179
Summary WebContent process often uses 100% CPU on tabelog.com
Ryosuke Niwa
Reported 2017-03-04 23:07:49 PST
Reproduction steps: 1. Visit https://tabelog.com/tokyo/A1308/A130801/rstLst/RC010201/ 2. If you see a map with English text, click on "日本語" on the right upper corner, and open the URL again. 3. Open a bunch of pages on a new tab by cmd+click on the names of restaurants. 4. Open one of the newly opened tabs. 5. Go back to the ranking / list page. 6. Open more restaurants in a new tab. Repeat 3-6 a couple of times. WebContent process will end up using 100% of CPU. Tested on STP23 and STP24.
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Add attachment proposed patch, testcase, etc.
Ryosuke Niwa
Comment 1 2017-03-04 23:08:42 PST
https://tabelog.com/ is an equivalent of Yelp in Japan, and it's one of the most popular websites in Japan.
Ryosuke Niwa
Comment 2 2017-03-04 23:13:55 PST
I couldn't reproduce a similar issue on Chrome 56.0.2924.87.
Ryosuke Niwa
Comment 3 2017-03-04 23:19:13 PST
(In reply to comment #2) > I couldn't reproduce a similar issue on Chrome 56.0.2924.87. I take it back. I can reproduce this on Chrome as well. In fact, I can reproduce it on Firefox too so this must be a content issue.
Radar WebKit Bug Importer
Comment 4 2017-03-04 23:19:31 PST
<rdar://problem/30855481>
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