Yep. Googlites, let us know what else you need to run this down. On Monday, August 27, 2012 10:05:41 AM UTC-7, Mos wrote: > > In http://code.google.com/p/googleappengine/issues/detail?id=8004#c8 I > described in detail a current example of the nonconforming > instance-handling of GAE. > Please check the comment, the screenshot and the log-file I filed there. > > Dear GAE-Team, what else do you need to fix this? In this thread and in > several issues you should have more than enough proof and examples..... > > Cheers > Mos > > On Mon, Aug 27, 2012 at 5:34 PM, Mos <mos...@googlemail.com > <javascript:>>wrote: > >> I saw the same behavior (as discussed before in the thread). Many other >> people reported this again and again on this mailing-list. >> Google has to acknowledge that the current implementation is buggy or the >> implementation works but doesn't make any sense in practice. >> >> Bye the way - The problem is not restricted to resident instances. From >> time to time the same happens for dynamic instances: >> >> One or more dynamic instances are running and are almost idle (sometimes >> really idle==no request or just one request is served). >> Request comes and starts a new dynamic instance, it goes through 30-40 >> seconds of warmup, then request is served. >> >> >> On Mon, Aug 27, 2012 at 5:19 PM, Carl D'Halluin >> <ca...@mobicage.com<javascript:> >> > wrote: >> >>> Hi Carl, >>> >>> I see exactly the same behaviour for my Java appengine app. >>> Resident instance does nothing; instead idle instance is started, going >>> through several seconds of warmup, then request is served. >>> >>> Regards >>> >>> >>> On Mon, Aug 27, 2012 at 5:11 PM, Carl Schroeder >>> <schroede...@gmail.com<javascript:> >>> > wrote: >>> >>>> 2012-08-27 08:05 is the point in the logs. 1 Resident instance. No >>>> Dynamic instances. >>>> The request was sent to a cold starting Dynamic instance. Resident >>>> instance did nothing. >>>> Request took 18 seconds to serve. >>>> >>>> >>>> On Monday, August 27, 2012 2:16:25 AM UTC-7, Johan Euphrosine (Google) >>>> wrote: >>>> >>>>> On Mon, Aug 27, 2012 at 5:59 AM, Carl Schroeder >>>>> <schroede...@gmail.com> wrote: >>>>> > Let me see if I understand this correctly: there is currently no way >>>>> on app >>>>> > engine to ensure that there is an instance ready to process incoming >>>>> > requests for an app that has been idle for some period of time. Min >>>>> idle >>>>> > instances (labeled as Resident) sit there and do almost nothing >>>>> while user >>>>> > facing requests are instead sent to cold instance starts. If true, >>>>> that >>>>> > dovetails with what I have seen in the behavior of my app. For >>>>> python >>>>> > runtimes with sub-second spinup times, this is no big deal. For java >>>>> > runtimes with spinup times in double digit seconds it is a >>>>> deal-breaker of a >>>>> > "feature". >>>>> > >>>>> > The problem seems to be that the scheduler thinks sending a request >>>>> to a >>>>> > non-existent dynamic instance is a better idea than using the >>>>> Resident >>>>> > instance for it's intended purpose: to serve requests when dynamic >>>>> instances >>>>> > are unable to. This is probably a corner case born of low traffic >>>>> conditions >>>>> > that allow user request serving dynamic instances to despawn. >>>>> >>>>> Hi Carl, >>>>> >>>>> That's not what we observed, as I corrected in the previous email: >>>>> """ >>>>> Resident instances are used for processing incoming request if there >>>>> is no dynamic instance, but it is possible that the scheduler warm up >>>>> new dynamic instance to maintain the Min Idle Instance invariant. >>>>> """ >>>>> >>>>> If you observe a different behavior please comment with your >>>>> application id and the timestamp of occurence and we can try to figure >>>>> out what happened. >>>>> >>>>> Thanks in advance. >>>>> >>>>> > >>>>> > For low traffic apps, "Resident" instances serve almost no purpose. >>>>> Better >>>>> > to do away with them via the slider bars and just set up a script to >>>>> tickle >>>>> > the app just often enough to keep one "Dynamic" instance resident. >>>>> > >>>>> > So, two features to fix this: >>>>> > First, a slider bar labeled "Minimum Dynamic instances" ;) >>>>> > Second, a button to enable sending warm-up requests and having them >>>>> return >>>>> > before considering an instance for user facing requests. >>>>> > >>>>> > >>>>> > -- >>>>> > You received this message because you are subscribed to the Google >>>>> Groups >>>>> > "Google App Engine" group. >>>>> > To view this discussion on the web visit >>>>> > https://groups.google.com/d/**msg/google-appengine/-/**G4DPOlW2Jh8J<https://groups.google.com/d/msg/google-appengine/-/G4DPOlW2Jh8J>. >>>>> > >>>>> >>>>> > >>>>> > To post to this group, send email to google-a...@googlegroups.**com. >>>>> >>>>> > To unsubscribe from this group, send email to >>>>> > google-appengi...@**googlegroups.com. >>>>> > For more options, visit this group at >>>>> > http://groups.google.com/**group/google-appengine?hl=en<http://groups.google.com/group/google-appengine?hl=en>. >>>>> > >>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> Johan Euphrosine (proppy) >>>>> Developer Programs Engineer >>>>> Google Developer Relations >>>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Google App Engine" group. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msg/google-appengine/-/ApT6E62dU9QJ. >>>> >>>> To post to this group, send email to >>>> google-a...@googlegroups.com<javascript:> >>>> . >>>> To unsubscribe from this group, send email to >>>> google-appengi...@googlegroups.com <javascript:>. >>>> >>>> For more options, visit this group at >>>> http://groups.google.com/group/google-appengine?hl=en. >>>> >>> >>> >>> >>> -- >>> Carl D'Halluin >>> >>> Next-generation communication at http://www.rogerthat.net >>> >>> Email: ca...@mobicage.com <javascript:> >>> Phone: +32 9 324 25 64 >>> Fax: +32 9 324 25 65 >>> Skype: carldhalluin >>> Twitter: @carl_dhalluin >>> LinkedIn: http://www.linkedin.com/pub/carl-d-halluin/0/982/457 >>> >>> NV MOBICAGE >>> Antwerpsesteenweg 19 >>> 9080 Lochristi >>> Belgium >>> >>> >> >
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