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On what basis do you think these issues are related? The bug report provides very little insight in what's going on, only that there's a severe performance degr
by stingraycharles 14y ago
On what basis do you think these issues are related? The bug report provides very little insight in what's going on, only that there's a severe performance degradation at 9AM.
The thundering herd problem applied to waking up child processes is one possible explanation, but there are dozens of other explanations that are just as likely, based on the information we're provided with.
- brown9-2 14y agoThe commenter you are replying to is a former Google employee; the description of the lock service sounds like Chubby (http://research.google.com/archive/chubby.html http://research.google.com/archive/chubby.html), App Engine likely uses some sort of distributed directory service for keeping track of things like quotas.
- rachelbythebay 14y ago9 AM in Brussels is midnight here on the west coast if I've done my time zone math properly. It's the perfect time to push something. Unfortunately, if that means having everything snap-to and then freeze for a couple of seconds, that's not good. Again, I don't know if this is what happened here. I've just seen this sort of thing before.