We have been hitting the soft memory exceed issues quite a few times in the recent past (In Task Queue). The limit it seems is approx 220 MB.
Sam On Wed, Dec 22, 2010 at 9:12 AM, Norlesh <[email protected]> wrote: > Hi Kash, seems to me were allowed to use as much memory as our apps > can acquire but no more (not helpful I know) and since normal app > requests are shooting for below 1 second response theres probably not > a lot of pressure to beef that up above the current amount which from > what Ive gathered seems to be at least 180 MB - doing a search for > 'appengine soft memory limit MB' gives some ballparks. > > I expect running multiple apps per server box would be painful if it > got to the point where all the servers ram had to be paged to disk > when swapping between apps to handle incoming requests. > > I haven't used the task queue yet so don't know what the soft limit is > there (all though I expect to run up against it when I do) - hopefully > if it is low though there would be enough interest from developers for > that to be raised in the future. > > [I would be curious to know what the results are if you happen to do > some stress testing using tasks] > > sorry I can't be more help, Shane > > On Dec 21, 10:55 pm, kash <[email protected]> wrote: > > Hi Norlesh, > > > > I sent a request for GAE team through a CPU quota increase request > > form. i asked them about the memory issue. i got the below reply, > > which i still find a bot vague. can you have a look at it and tell me > > what you think > > > > Google support reply: "Hi. Thank you for choosing App Engine to host > > your application. Apps with > > billing enabled are no longer limited to 500 requests per second. If > > you > > keep your average latency under 1000 ms, your app should be able to > > scale > > as high as necessary to handle the load. > > > > The best way to ensure your application scales is to keep all or most > > user-facing requests as short as possible, generally under 1 second, > > and > > move any long-running processes to the background using the task queue > > API. For more information, please consult the documentation and > > community > > forums. > > > > > http://code.google.com/appengine/docs/java/taskqueue/http://code.google.com/appengine/community.html > > > > As far as RAM usage goes, it's pretty much whatever VM you have access > > to. > > You will get memory errors if you exceed the maximum amount, but we > > don't > > charge for memory usage otherwise. > > > > Thank you. > > -wesley, App Engine support team > > > > Original Message Follows: > > ------------------------ > > From: [email protected] > > Subject: App Engine CPU quota increase > > Date: Mon, 20 Dec 2010 14:23:16 +0000 > > > > > > > > > > > > > > > > > > > > > > > > > > > > > social network > > > > > ApplicationIdentifier: not decided yet > > > AutoDetectedBrowser: Google Chrome 8 > > > AutoDetectedOS: Intel Macintosh OS X > > > IssueType: appengine > > > Language: en > > > bug: cpu > > > cause: I am trying to build a social network that is expected to reach > > > around 1 million users in 2 years. I want t make sure before i start > > > developing this app on google app engine that i can expand freely. I > > also > > > find one information missing, which is the additional RAM usage cost. i > > > appreciate if you can provide me more detailed information. I went > > through > > > the whole app engine guide including the quotas and billing but still > > did > > > not find this info. > > > > > thanks, > > > first_name: Mohamed > > > last_name: Kash > > > qps: 10000 > > > > On Dec 21, 2:34 am, Norlesh <[email protected]> wrote: > > > > > > > > > > > > > > > > > Hi Kash, > > > I have no idea about what the charge would be - only thing I found to > > > suggest that it could be possible in the future was something eluded > > > to in the last post ofhttp:// > code.google.com/p/googleappengine/issues/detail?id=1646 > > > on 13 Dec where a googler mentioned checking out the 'background > > > servers feature' when its released in response to someone asking about > > > a memory intensive use case (you know as much as I do about when that > > > release is but its on the road map). > > > -r Shane > > > > > On Dec 20, 11:51 pm, Mohamed kash <[email protected]> wrote: > > > > > > Hi All .. I wonder if anyone knows how google plans to charge for > > > > additional RAM usage. they never mentioned that > > > > > > /Kash > > -- > 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]<google-appengine%[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.
