And again today, I've just had another request to appstats eat up a tonne of CPU time:
/appstats/stats 200 169ms 23878cpu_ms Is anyone else seeing this? On Feb 7, 3:34 pm, Simon Knott <[email protected]> wrote: > As I've carried on the testing of my app against the HR-store, instead > of the M/S datastore, I've noticed that occasionally I'll get a > request which has a massive CPU spike. These spikes consume > ~30-40seconds of CPU time, when my usual request times are ~. I'd > assumed that something must be fundamentally wrong with my application > against the HR datastore, but I've just had two requests to AppStats > which have the same problem and one of them was an image! > > For example: > > /appstats/static/app_engine_logo_sm.gif 200 131ms 31811cpu_ms > <--- Image > /appstats/stats 200 536ms 32375cpu_ms > > Yesterday I had the request below in my log. It didn't touch the > datastore, had 6 calls to MemCache and according to AppStats had a > grand total time of 125ms. > > /user/get 200 156ms 42020cpu_ms > > What could cause these large CPU spikes? They aren't loading > requests, as I'm correctly getting those marked in my logs and they > are in the usual region of 2-3s duration. I also don't experience them > on the same app against the M/S datastore. My initial thoughts were > that AppStats was potentially the cause of the problem, until I saw > the request for an image with massive CPU usage! -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
