I can help you investigate this. Please reply privately with your application ID.
On Tue, Feb 8, 2011 at 6:38 AM, Simon Knott <knott.si...@gmail.com> wrote: > Well now I'm just starting to think it's fishy - I've just had a > second high-CPU request to my app and it has exactly the same CPU ms > time consumed, down to the millisecond. > > /appstats/stats 200 169ms 23878cpu_ms > /sync 200 43ms 23878cpu_ms > > On Feb 8, 12:23 pm, Simon Knott <knott.si...@gmail.com> wrote: > > 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 <knott.si...@gmail.com> 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 > google-appengine-java@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > > -- 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 google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
