Thanks, Andrew. But after the change, it still costs me 2130cpu_ms 2112api_cpu_ms :)
On Sat, Feb 20, 2010 at 5:22 PM, Andrew Chilton <[email protected]>wrote: > On 20 February 2010 21:21, kang <[email protected]> wrote: > > I'm going to clear the datastore. I use the following code: > > old_date = datetime.datetime(2009,10,1) > > old_updates = SomeUpdate.all().filter("updated <",old_date).fetch(20) > > db.delete(old_updates) > > it costs me nearly 1982cpu_ms 1945api_cpu_ms every time. Is it normal? > > You might be able to save some time by using a keys_only query. See > this for details. > > > http://code.google.com/appengine/docs/python/datastore/modelclass.html#Model_all > > Cheers, > Andy > > -- > contact: Andrew Chilton > website: http://www.chilts.org/blog/ > > -- > 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. > > -- Stay hungry,Stay foolish. -- 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.
