There are definitely high traffic times and low traffic times, but I would be surprised if it had a significant impact on the performance of your application. Can you track this with metrics and keep us posted? When you say "10 or 25", what are you referring to? Entities? Milliseconds?
-- Ikai Lan Developer Programs Engineer, Google App Engine Blogger: http://googleappengine.blogspot.com Reddit: http://www.reddit.com/r/appengine Twitter: http://twitter.com/app_engine On Thu, Oct 21, 2010 at 12:54 PM, Ice13ill <[email protected]> wrote: > First of all, i realized that part of the problem was the range of the > query (my data objects/entities grew very fast so i didn't that i was > retrieving 1000 entities per query). But my pb is that i don't really > "get it" ... the difference in time between queries is very different > from moment to moment, although it's the same query.(10 or 25 for > ex...) This is more of a curiosity from an "engineer" point of view :P > Second, i understand the DeadlineExcededEx but why 500 error code ? Is > it related to my inadequate way of making complex queries? is that > from my app or may it be because of a high load to datastore ? I say > this because it seams to me that the latencies are lower around 8:00 > GMT (morning in eastern Europe) and rise quite enough after 17:00 GMT > (afternoon in East Europe). > > Thanks... > > On Oct 21, 10:24 pm, "Ikai Lan (Google)" > <[email protected]<ikai.l%[email protected]> > > > wrote: > > What does the query look like? Query performance can sometimes be > affected > > by the "shape" of the data - that is, if the data changes, it may change > the > > number of indexes we need to zig-zag over. > > > > -- > > Ikai Lan > > Developer Programs Engineer, Google App Engine > > Blogger:http://googleappengine.blogspot.com > > Reddit:http://www.reddit.com/r/appengine > > Twitter:http://twitter.com/app_engine > > > > > > > > > > > > > > > > On Tue, Oct 19, 2010 at 10:44 AM, Ice13ill <[email protected]> > wrote: > > > The queries (or any other operation for that matter...) have grate > > > latencies (or 500 error code) for about 20 percent of the time. > > > For example the same query that yesterday or 2 days ago took about 2 > > > seconds, now takes between 5 and 25 seconds (the SAME query). The app > > > can work fine, with low latencies and then, out of nowhere, operations > > > take 5 to 25 secs more than normal (witch lead to > > > DeadlineExcededException). > > > > > On Oct 18, 9:41 pm, Miroslav Genov <[email protected]> wrote: > > > > Does the selected kind has any relationships to another kind ? > > > > Do you have many conditional statements in your query ? > > > > > > I don't think that anyone could help you with this information. > Please > > > > provide some more information about the definition of your entities > and > > > > also whether you are using JDO, low level api or some other > persistence > > > > framework. > > > > > > On 18.10.2010 г. 20:37 ч., Ice13ill wrote: > > > > > > > Hello, I need some help from the app engine team. I'm having > problems > > > > > when accessing the datastore for my application. The runquery > requests > > > > > cat take about 10 to 25 seconds, and sometimes i get > > > > > DeadlineExcededException or 500 error code. > > > > > > > I was wondering if this is happening to other developers or just me > > > > > (or very few). My app id is ebas-gdf. Please advice. > > > > > -- > > > You received this message because you are subscribed to the Google > Groups > > > "Google App Engine for Java" group. > > > To post to this group, send email to > > > [email protected]. > > > To unsubscribe from this group, send email to > > > [email protected]<google-appengine-java%[email protected]><google-appengine-java%2B > [email protected]> > > > . > > > For more options, visit this group at > > >http://groups.google.com/group/google-appengine-java?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" group. > To post to this group, send email to > [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-appengine-java%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" 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-java?hl=en.
