It looks like the problem started 3/21, see attached image. I'm about to head to the airport for ~20 hours of travel so can't investigate further, but may be related to parser changes made that day which line up with the second bigger spike.
There are over a dozen reports of general slowness with the English
As I browsed and edited the site today, I experienced similar issues
(painful slowness on intermittent page loads, loading half a page and then
Is anyone from ops or engineering looking into this? I've filed a bug about
this as well: <https://bugzilla.wikimedia.org/show_bug.cgi?id=35448>.
It may be that this is a known issue (due to schema changes or whatever
else), but I don't think anyone from ops or engineering has commented on the
village pump (or elsewhere?). Can someone please take a look at what's going
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