Addshore added a comment.

Looking at the edit rate, and page creation rate during the time period that the query service seemed to struggle updating it doesn't look like there was any real increase for the ~20 hours in question (10 hours of which the lag was going up and 10 hours of which the lag was going down). There was also no real increase to the bytes of data added during that time.

Looking at the wdqs dashboards too I don't really see any sharp increase in queries or updates, load etc. ? Perhaps an increase in the number of procs running?

I guess there is 1 updater for each 1 wdqs host? And the updaters run on the same machine answering queries? I wonder if running them on a different host might provide a small bit of processing relief for the wdqs hosts?


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https://phabricator.wikimedia.org/T209201

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To: Addshore
Cc: Krenair, Addshore, TerraCodes, Liuxinyu970226, Aklapper, Smalyshev, Nandana, Lahi, Gq86, Lucas_Werkmeister_WMDE, GoranSMilovanovic, QZanden, EBjune, merbst, LawExplorer, D3r1ck01, Jonas, Xmlizer, jkroll, Wikidata-bugs, Jdouglas, aude, Tobias1984, Manybubbles, Mbch331
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