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Timeout on pages with lots of templates
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Description

https://sk.wikipedia.org/w/index.php?title=Zoznam_SD_objektov_-19_1-3000?oldid=6558713 (the latest revision as of Feb 23, 2021) has caused a lot of timeouts as seem in logstash.

Unrelated to the question of who / what is retrying that page so much, this task is to investigate the reasons for poor performance on this page.
It basically is a multi-template table with 3000 rows where each row is generated by a template of this form: {{Zoznam BD položka|SD|-19|2759||9,8|9|30|17,2|-19|44,4}}
Worth investigating where in the parsing pipeline this clogs up the pipes.

Event Timeline

ssastry created this task.Tue, Feb 23, 2:50 PM
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptTue, Feb 23, 2:50 PM
ssastry triaged this task as Medium priority.Tue, Feb 23, 2:52 PM
Arlolra moved this task from Needs Triage to Performance on the Parsoid board.Thu, Feb 25, 4:49 PM