ok, thanks, but there is clearly quite a bit of tolerance here. (probably due to the process vs heap sizes mentioned in the OP)
I've frequently seen instances of "size" 163MB sitting happily in the instance list. It would be nice to know what is the actual trigger point. Does this include any data I have in Memcache or is that counted externally from my instances? many thanks On Tuesday, March 20, 2012 3:02:34 PM UTC+1, aschmid wrote: > > the instances will restart. you can see how long every instance was up on > the instances screen in the admin > > On Mar 19, 2012, at 4:32 PM, doright wrote: > > I'm hoping its not too late to revive this thread. > > I still don't understand. Specifically, in java, what happens when my > instance memory usage surpasses an instance limit. I'm running F1 and my > instances tend to settle around 160MB, sometimes a little higher. Do they > simply sit there and not get sent any requests? Are they shut down - > doesn't seem to be the case. If they still serve requests what is the > incentive for upgrading instances? > > thanks for any help, > > On Wednesday, December 14, 2011 7:31:36 PM UTC+1, Jon McAlister wrote: >> >> Yes, F1 is what all frontend instances were using prior to the 1.6.1 >> release. >> >> Scott, the issue with your instances dashboard is that our accounting >> and enforcement of java memory is different than for python, and this >> implementation detail is "bleeding through the interface" here. >> >> Specifically, for java, the memory limit >> ( >> http://code.google.com/appengine/docs/java/config/backends.html#Instance_Classes >> ) >> is what we use as the jvm heap size. However, here the admin console >> is listing the process memory usage. These two are not the same thing. >> The java process size is usually higher than the jvm heap size, but >> usually by a small and relatively stable amount (e.g. 10%). So, in >> this case, the jvm heap size is 128MB, and the process size is larger >> (and that is what is listed on the page). When you choose a larger >> instance class, new instances will be configured with larger jvm heap >> sizes. >> >> On Wed, Dec 14, 2011 at 12:03 AM, Per <[email protected]> wrote: >> > I'm confused by these changes too. Although I'm happy to have choice >> > (pay more for more speed sounds awesome) this leaves an odd >> > aftertaste After all the communication issues around the recent >> > pricing changes, shouldn't it be quite obvious that people will ask >> > you about the details anyway? Wouldn't it help to spend a couple >> > minutes upfront, explaining this change/new feature better? Surely you >> > have spent many hours working on the implementation, why not share >> > some additional insight? >> > >> > "By default, all applications use the basic frontend instance setting >> > of 128MB memory and 600MHz CPU." >> > >> > So, if F1 is what we've been using the past months, why don't you just >> > say so. And if it happened to be F2, then people will find out >> > eventually, and you should say to too. >> > >> > I can see a mysterious drop in performance of my application since the >> > 22nd of November. I have not analysed it yet (it only occurred to me >> > now, since I was busy), but it would help a lot if you'd take the >> > guesswork out of these announcements -- because otherwise I am >> > somewhat tempted to believe that we've been on something similar to F2 >> > and will now have to pay more to achieve the same old performance. >> > Please tell me it's not like this, and I'll shut up instantly :) >> > >> > Cheers, >> > Per >> > >> > >> > >> > On Dec 14, 12:03 pm, Scott Murphy <[email protected]> wrote: >> >> Hi, I am confused. Did the default used to be F2? All my instances >> run > >> >> 128MB of ram. How is this possible? Does this mean that part of the >> memory >> >> is swapped to disk? If I choose a larger instance class say (F4), >> will my >> >> Java Heap size automatically change to allow up to 512MB heap? Or is >> this >> >> extra memory not usable by the app? >> >> >> >> 0.0000.0 ms108112:44:46170.1 MBytes[image: Resident >> Icon]Resident0.0000.0 ms >> >> 27701 day, 21:07:27190.0 MBytes[image: Resident >> Icon]Resident0.0171905.0 ms >> >> 14101 day, 5:35:31182.7 MBytes[image: Resident >> Icon]Resident0.4331114.4 ms >> >> 402102:49:43239.3 MBytes[image: Dynamic Icon]Dynamic0.0000.0 >> ms109701:00:15203.4 >> >> MBytes[image: Dynamic Icon]Dynamic0.0000.0 ms12500:12:01197.4 >> MBytes[image: >> >> Dynamic Icon]Dynamic0.2331295.7 ms48500:22:12192.7 MBytes[image: >> Dynamic >> >> Icon]Dynamic0.4671081.0 ms696734:08:09245.1 MBytes[image: Dynamic Icon] >> >> Dynamic0.3831486.6 ms367314:03:36243.4 MBytes[image: Dynamic >> Icon]Dynamic >> >> 0.0000.0 ms641304:15:35243.5 MBytes[image: Dynamic >> Icon]Dynamic0.0503124.3 >> >> ms600:02:07149.5 MBytes[image: Dynamic Icon]Dynamic0.05030326.0 >> ms200:00:40136.2 >> >> MBytes[image: Dynamic Icon]Dynamic0.5671189.9 ms551503:33:30244.8 >> MBytes[image: >> >> Dynamic Icon]Dynamic >> > >> > -- >> > 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 view this discussion on the web visit > https://groups.google.com/d/msg/google-appengine/-/FVYYa-MKn0AJ. > 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. 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