akosiaris added a comment.
In T199219#4452041 <https://phabricator.wikimedia.org/T199219#4452041>, @Smalyshev wrote: > @BBlack I am getting rather strange result with `appservers-ro.discovery.wmnet` - if I call the URL you provided, the call takes a lot of time: > > real 0m4.270s > > while if I call to `www.wikidata.org`, I get: > > real 0m0.127s > > Same with `api-ro`. `appservers-rw` is a bit faster: > > real 0m0.320s > > But still 3x from going through frontend (and it's not caching - I changed the URL, result is the same, and varnish settings all say "miss"). Is this still true? I see deploy1001:~$ for i in appservers-ro appservers-rw api-ro api-rw ; do echo -n $i; time curl -s -o /dev/null -X GET -H 'Host: www.wikidata.org' "https://${i}.discovery.wmnet/wiki/Special:EntityData/Q2408871.ttl?nocache=1530836328152&flavor=dump"; ; done appservers-ro real 0m0.097s user 0m0.020s sys 0m0.012s appservers-rw real 0m0.113s user 0m0.028s sys 0m0.000s api-ro real 0m0.113s user 0m0.024s sys 0m0.012s api-rw real 0m0.128s user 0m0.028s sys 0m0.004s Note that it's quite important where the tests are run from. That is the active DC is going to be faster anyway. Running those from codfw yields entirely different results as there are back and forths between the DCs that need to be served. deploy2001:~$ for i in appservers-ro appservers-rw api-ro api-rw ; do echo -n $i; time curl -s -o /dev/null -H 'Host: www.wikidata.org' "https://${i}.discovery.wmnet/wiki/Special:EntityData/Q2408871.ttl?nocache=1530836328152&flavor=dump"; ; done appservers-ro real 0m6.435s user 0m0.024s sys 0m0.012s appservers-rw real 0m0.323s user 0m0.012s sys 0m0.020s api-ro real 0m5.061s user 0m0.028s sys 0m0.004s api-rw real 0m0.276s user 0m0.032s sys 0m0.000s Which are comparable to the numbers posted above. TASK DETAIL https://phabricator.wikimedia.org/T199219 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: akosiaris Cc: akosiaris, BBlack, Aklapper, Smalyshev, Gehel, darthmon_wmde, Premeditated, Nandana, Lahi, Gq86, Lucas_Werkmeister_WMDE, GoranSMilovanovic, QZanden, EBjune, merbst, LawExplorer, _jensen, rosalieper, Jonas, Xmlizer, jkroll, Wikidata-bugs, Jdouglas, aude, Tobias1984, Manybubbles, Mbch331
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