I always have resident instances, and I optimized my warm up to be pretty fast. I need to clean up some imports I don’t use any more but all my initialization variables are put in to memcache, and re-touched very regularly to keep them from falling out. This saves a warm up requiring a call to the datastore.
I haven't yet implemented a dedicated warm up function, I probably should but so far warm ups on the fly are fast enough with my app. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of tempy Sent: Friday, November 25, 2011 2:18 PM To: Google App Engine Subject: [google-appengine] Re: 500 Server Errors + very high latency I'm also in Germany (though I don't think this matters) and I'm seeing my instances get killed very quickly and every request turns into a slow-ish cold-start. Maybe you're seeing the same problem? If so, this is definitely something that happens and will eventually pass, hopefully before too many users get pissed off and go to facebook instead. On Nov 25, 10:17 pm, Nikolai <[email protected]> wrote: > Hey. > > Someone from Google must have read this. Since 40 minutes everything > is back to normal. Latency is back from 2400ms to 200ms. > Thanks for the magic. > > Regards, > Nikolai > > On Nov 25, 8:40 pm, "Brandon Wirtz" <[email protected]> wrote: > > > > > > > > > I don't have any proof, but I think GAE is optimized for requests > > that take less than 3s. It seems to be rock solid on requests of > > that size, but things I build that take 8s per request error a lot. > > > The solution is simple... Do less math :-) > > > -----Original Message----- > > From: [email protected] > > > [mailto:[email protected]] On Behalf Of Nikolai > > Sent: Friday, November 25, 2011 11:32 AM > > To: Google App Engine > > Subject: [google-appengine] Re: 500 Server Errors + very high > > latency > > > Hey Brandon, > > > thanks for you reply. With our app it's really simple Python > > requests (No database or ulrfetch involved) that take more than > > 10000ms and throw 500 server errors. > > Strange. > > > Nikolai > > > On Nov 25, 8:22 pm, "Brandon Wirtz" <[email protected]> wrote: > > > We didn't have any 500 errors, but we saw a spike in latency an > > > hour ago that seems to have since resolved. > > > > -----Original Message----- > > > From: [email protected] > > > > [mailto:[email protected]] On Behalf Of Nikolai > > > Sent: Friday, November 25, 2011 11:19 AM > > > To: Google App Engine > > > Subject: [google-appengine] 500 Server Errors + very high latency > > > > Hello, > > > > we're seeing very high latency (3000 ms) and high error rates on > > > one of our applications. I also filed a production issue (http:// > > > code.google.com/p/googleappengine/issues/detail?id=6411) > > > Since 4 AM GMT latency went up from about 150 ms to 2500 ms and > > > stayed there. We don't see this on the system status dashboard. > > > Our users are mainly from germany so perhaps it is a problem in a european datacenter? > > > > Could someone from Google please have a look into this? > > > > Regards, > > > Nikolai > > > > -- > > > You received this message because you are subscribed to the Google > > > Groups "Google App Engine" 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 > > athttp://groups.google.com/group/google-appengine?hl=en. > > > -- > > You received this message because you are subscribed to the Google > > Groups "Google App Engine" 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 athttp://groups.google.com/group/google-appengine?hl=en. -- You received this message because you are subscribed to the Google Groups "Google App Engine" 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?hl=en. -- You received this message because you are subscribed to the Google Groups "Google App Engine" 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?hl=en.
