Hi Ikai, I've been writing in similar threads for about a week. Our app (id=typescout) lately experienced very high latency but was somehow performing better since Monday. Today again, performance broke down, and we see lots of requests taking over 50s or failing without any reason. I can remember, more than half a year ago appengine "stability" often was as bad as it was the last two weeks, but everything worked beautifully since then. Unfortunately, during the last two weeks, appengine performance was really horrible for us and our users. Do you think this problems will be resolved by the scheduled maintenance on Monday 19th? We're using M/S, because we sometimes have lots of concurrent writes which would just not work well with HRD. At the same time, we tried to run our app with HRD and read/write quota was running up incredibly fast, about 10-50 times faster than M/S, so we decided not to migrate our app.
Thanks for your support! Kind regards, Thomas Am Donnerstag, 15. März 2012 16:31:53 UTC+1 schrieb Ikai Lan: > > I see. Let's continue watching this to look for trends. Please post if it > fluctuates either higher or lower. > > -- > Ikai Lan > Developer Programs Engineer, Google App Engine > plus.ikailan.com > > > > On Thu, Mar 15, 2012 at 4:19 AM, andidol <[email protected]>wrote: > >> I'm doing a Model.get_by_key_name().. on a model with ~50 million entries >> (I know this should not effect the query-time). The Model.get_by_key_name() >> method often takes more than 200ms for finding an entry, not every time but >> often. Not finding a key fails much faster, IMO this is ok. I think this is >> not normal, do you have any suggestions? >> >> >> On Wednesday, March 14, 2012 8:01:26 PM UTC+1, Ikai Lan wrote: >>> >>> We're addressing issues with high replication datastore applications. >>> >>> In the future, however, this information is typically not enough. What >>> are you doing? Are you making datastore calls? Are you doing URLFetch? Are >>> you making XMPP or email API calls? Are CPU intensive tasks slower? This is >>> important because there are a lot of operations for which 200ms would seem >>> low latency. If you're trying to brute force SHA1 hashes and it's taking >>> 500ms on average, you're doing okay. >>> >>> One of the fortunate things about working with software developers >>> instead of normal internet consumers is that I can usually just give the >>> guidance, "report issues that way you want your users to report issues or >>> bugs", and it gets the message across =). >>> >>> -- >>> Ikai Lan >>> Developer Programs Engineer, Google App Engine >>> plus.ikailan.com >>> >>> >>> >>> On Wed, Mar 14, 2012 at 5:48 AM, andidol <[email protected]>wrote: >>> >>>> Hi, >>>> >>>> I have very high latency on my AppEngine since yesterday. It was really >>>> fast before < 100ms. Now there are a lot of requests performing with > >>>> 200ms without any reason. I did not update or did anything. >>>> I'm using High Replication Datastore. >>>> >>>> Thanks >>>> >>>> -- >>>> 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/-/**UKDaOm5bNJsJ<https://groups.google.com/d/msg/google-appengine/-/UKDaOm5bNJsJ> >>>> . >>>> To post to this group, send email to google-appengine@googlegroups.** >>>> com <[email protected]>. >>>> To unsubscribe from this group, send email to >>>> google-appengine+unsubscribe@**googlegroups.com<google-appengine%[email protected]> >>>> . >>>> 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> >>>> . >>>> >>> >>> -- >> 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/-/_OFHy-k7QE8J. >> >> 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/-/k07vWK1PlW4J. 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.
