I used a tool call appstats. I don't know if there's a java version of the tool, but here's the python version: https://developers.google.com/appengine/docs/python/tools/appstats
Installation requires a slight modification to the app.yaml and appengine_config.py files. The only other modification you might have to make is to reduce your memory footprint. Enabling appstats caused a small percentage of my POST requests to exceed the soft memory limit. I worked around that by selectively disabling appstats for those requests. Hope this helps. On Tue, May 22, 2012 at 2:04 PM, Gayle Laakmann <[email protected]> wrote: > I think I'm having the same issue. > > How did you get that look at memcache latency specifically? > > On May 22, 9:41 am, Rishi Arora <[email protected]> wrote: > > Ah, I was mistaken. The restriction is the other way round. Py2.7 > > requires HRD. > > > > On Tue, May 22, 2012 at 11:24 AM, Joshua Smith <[email protected] > >wrote: > > > > > > > > > > > > > > > > > HRD does not require Py2.7 > > > > > On May 22, 2012, at 12:01 PM, Rishi Arora wrote: > > > > > Also, I imagine going to HRD would indirectly help my situation because > > > I'll be forced to upgrade to python2.7. So, while my instance is > waiting > > > forever for memcache to return some data, it would be available to > service > > > other requests, and keep the number of active instances low. Am I > correct > > > in this reasoning? > > > > > On Tue, May 22, 2012 at 10:59 AM, Rishi Arora < > [email protected]>wrote: > > > > >> My app usually consumes ~30 instance hours every day, and occasionally > > >> spikes to ~35 when Master-Slave datastore latencies go up. We will be > > >> transitioning to HRD soon, but today large latency spikes have caused > my > > >> instance hours to reach ~50 already, in the first 9 hours of the day. > I > > >> peeked at the appstats output to see where this spike is coming from, > and > > >> it appears to be memcache (see attached pic). This seems absurd and > not > > >> something app operators should be expected to pay for. Anybody else > seen > > >> this? > > > > >> Thanks in advance > > >> - Rishi > > > > > -- > > > 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. > > > > > -- > > > 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. > > -- > 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. > > -- 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.
