alaa_wmde added a comment.
Indeed looking at different graphs does not show anything that immediately suggests any reason for this. We can reduce writing to both again to Q40m and see if it is indeed related to that switch (as the actual switch happened ~9hrs earlier than this increase afaik). Or we can slow down migration even more. But preferably, we would avoid both to avoid delaying the migration more or put more pressure on engineering a way around the moment rebuild script is close to the limit we put on write both, as long as we can bare this rate of locks. @jcrespo what rate should we be concerned about? (to plan/monitor ahead) TASK DETAIL https://phabricator.wikimedia.org/T234948 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: alaa_wmde Cc: alaa_wmde, Jdforrester-WMF, WMDE-leszek, Marostegui, Ladsgroup, Aklapper, jcrespo, Iflorez, darthmon_wmde, DannyS712, Nandana, Lahi, Gq86, GoranSMilovanovic, QZanden, LawExplorer, _jensen, rosalieper, Jonas, Wikidata-bugs, aude, Lydia_Pintscher, Mbch331, Jay8g, Krenair
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