[google-appengine] Re: Excessively variable response times, regardless of serving status

2009-02-26 Thread Nick Winter
I wouldn't worry about 100-300ms requests being sidelined until and unless I saw it happening. I realize I also may have been unclear before: I was measuring response times, not CPU time, if that helps. --~--~-~--~~~---~--~~ You received this message because you

[google-appengine] Re: Excessively variable response times, regardless of serving status

2009-02-26 Thread Marzia Niccolai
Hi, To clarify, this is based on runtime CPU, not datastore CPU. Also, this shouldn't affect the serving status of your application, it just means that your app may see some additional latency on a per request basis if it is serving a large number of CPU intensive requests. -Marzia On Tue, Feb

[google-appengine] Re: Excessively variable response times, regardless of serving status

2009-02-26 Thread bFlood
thanks marzia, thats what I needed to hear. On Feb 26, 12:33 pm, Marzia Niccolai ma...@google.com wrote: Hi, To clarify, this is based on runtime CPU, not datastore CPU.  Also, this shouldn't affect the serving status of your application, it just means that your app may see some additional

[google-appengine] Re: Excessively variable response times, regardless of serving status

2009-02-25 Thread Nick Winter
Thanks for following through on this, Marzia! That makes a lot more sense. I really appreciate the diagnosis; you rock! bFlood, I think the only reason that handler is getting mauled is because of the 1200ms+ startup costs for initializing a new instance. Because it's the same handler, the

[google-appengine] Re: Excessively variable response times, regardless of serving status

2009-02-24 Thread bFlood
thanks marzia I dont want to read too much into Nick's results above but is 30-200ms now considered to be CPU intensive? cheers brian On Feb 23, 4:20 pm, Marzia Niccolai ma...@google.com wrote: Hi, This is done on a per-request basis. -Marzia On Mon, Feb 23, 2009 at 12:14 PM, bFlood

[google-appengine] Re: Excessively variable response times, regardless of serving status

2009-02-24 Thread Marzia Niccolai
Hi, 20ms is not considered CPU intensive, but once you get up in to the hundreds, it is. -Marzia On Tue, Feb 24, 2009 at 5:43 AM, bFlood bflood...@gmail.com wrote: thanks marzia I dont want to read too much into Nick's results above but is 30-200ms now considered to be CPU intensive?

[google-appengine] Re: Excessively variable response times, regardless of serving status

2009-02-24 Thread bFlood
well that seems like a change from previous posts. I thought people generally quoted 200-300ms as a safe place to be for most of your requests On Feb 24, 4:13 pm, Marzia Niccolai ma...@google.com wrote: Hi, 20ms is not considered CPU intensive, but once you get up in to the hundreds, it is.

[google-appengine] Re: Excessively variable response times, regardless of serving status

2009-02-23 Thread Marzia Niccolai
Hi, Upon some further investigation, it seems that this is the result of the new handling of CPU intensive requests, more information about which can be found here: http://code.google.com/appengine/docs/quotas.html#Request_Limits Specifically Applications that are heavily cpu-bound, on the other

[google-appengine] Re: Excessively variable response times, regardless of serving status

2009-02-23 Thread Marzia Niccolai
Hi, This is done on a per-request basis. -Marzia On Mon, Feb 23, 2009 at 12:14 PM, bFlood bflood...@gmail.com wrote: hi marzia when this occurs, is the temp governor set for the entire app? or just the handler that caused the high CPU warning? above, Nick said that the typical request