kostajh added a comment.
> @kostajh @Catrope Could you rule out whether it's probably that the SpecialHomepage may have caused an increase in uncached Varnish traffic (e.g. anons starting sessions via edits or by viewing user sign-up page), or some other very chatty or large-value use of Memcached or Redis storage? The traffic to SpecialHomepage is very, very low (50% of newly registered users are added to experiment group on two wikis) so I think we can rule that out. I’ll be interested to see the effect of increasing the APC shm size, though. TASK DETAIL https://phabricator.wikimedia.org/T223310 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: elukey, kostajh Cc: Tarrow, alaa_wmde, Catrope, kostajh, Joe, Krinkle, aaron, jijiki, Aklapper, akosiaris, elukey, Addshore, E.S.A-Sheild, darthmon_wmde, joker88john, Legado_Shulgin, CucyNoiD, Nandana, NebulousIris, thifranc, AndyTan, Gaboe420, Versusxo, Majesticalreaper22, Giuliamocci, Davinaclare77, Adrian1985, Qtn1293, Cpaulf30, Imarlier, Lahi, Gq86, Baloch007, Darkminds3113, Bsandipan, Lordiis, GoranSMilovanovic, Adik2382, Th3d3v1ls, Hfbn0, Ramalepe, Liugev6, QZanden, LawExplorer, Vali.matei, WSH1906, Lewizho99, Zppix, Maathavan, _jensen, rosalieper, Taiwania_Justo, Jonas, Wong128hk, Wikidata-bugs, aude, Lydia_Pintscher, faidon, Mbch331, Jay8g, fgiunchedi, Dzahn
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