I periodically see the same. A put that typically happens well within tolerances (urn a couple hundred ms) will result in a timeout. Usually see bursts of these as well.
Robert On Wednesday, November 24, 2010, Jason C <[email protected]> wrote: > We definitely see lots of cases where a db.put() that normally takes > <150ms suddenly takes >30s and times out. And it usually happens in > bursts (i.e., many concurrent requests suffer the same fate). Seems to > be only on taskqueue requests, but difficult to know for sure because > taskqueue requests are perhaps 90% of our requests. > > In fact, this is the source of _most_ of our errors. > > j > > On Nov 24, 1:03 am, Tim Hoffman <[email protected]> wrote: >> Hi >> >> A single put ajax or otherwise shouldn't take to long, are you doing >> the put inside transactions, with large entity groups? That could >> cause problems. This isn't a big counter or something is it ? How long >> is a single put taking ? and are you getting >> a Datastore timeout or some other error ? >> >> Size/number of entities in datastore really doesn't make to much >> difference, >> >> large entities with lots of indexes will affect your write time. >> >> Just confirming you are doing a somequery.fetch(n) on your query >> results? >> >> Rgds >> >> T >> On Nov 24, 12:43 pm, "Alexander W." <[email protected]> >> wrote: >> >> >> >> > Yes I've looked at appstats, looks alright so far. >> >> > Problem 1: put() operations (ajax request) >> >> > It's one put() operation per request. >> >> > Problem 2: queries (normal requests) >> >> > It's important that the results of these queries are up to date, so I >> > have to fetch them every time a user loads the application. >> >> > It's a simple query, but the db has more than 10M entries. > > -- > 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. > > -- ------ Robert Kluin Ezox Systems, LLC -- 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.
