It sounds like these are impacting Python developers - I haven't heard any Java app developers chime in yet.
What's the ballpark of the QPS you guys are doing? <1qps, 10qps, 100qps, etc? -- 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, Sep 23, 2010 at 12:15 PM, Eli Jones <[email protected]> wrote: > Also, a cold start for this task can take as little as 960 ms (where it > shows the log detail: "This request caused a new process to be started for > your application..."). > > And, the task is doing a URLFetch, so.. I'm sure that is taking up a chunk > of the running time. > > One of my imports is pytz (no django or anything like that though).. so > that could also be of interest. > > > On Thu, Sep 23, 2010 at 12:10 PM, Eli Jones <[email protected]> wrote: > >> My app is in Python. The only thing it does between 6:30 AM PST and 1:00 >> PM PST is run a single chained task. The task just runs once every 5 >> minutes. (There are no other backend processes or users). >> >> Yesterday at 11:00 AM PST and 11:02 AM PST, the task experienced the 10 >> second, 500 error (with 0 CPU_MS used).. then the task successfully retried >> at 11:02:55 AM PST. >> >> There was another one (not mentioned in your list of times for yesterday) >> at 7:45 AM PST. Failed after 10 seconds with a 500 error and 0 CPU_MS used. >> The task successfully retried at 7:47 AM PST (for some reason, the tasks in >> my app wait 120 seconds for the first retry) >> >> For some reason, the log doesn't contain the message that usually goes >> with this error (there is no detailed log message): >> >> "Request was aborted after waiting too long to attempt to service your >> request. This may happen sporadically when the App Engine serving cluster is >> under unexpectedly high or uneven load. If you see this message frequently, >> please contact the App Engine team." >> >> But, it has the exact same fingerprint. (It just seems that the logs are >> trimming the detailed messages faster than usual.) >> >> This chained task runs 79 times each day (this would be 82 requests >> counting these 3 errors).. so these errors accounted for 3.66 % of the >> requests during the day yesterday. >> >> >> On Thu, Sep 23, 2010 at 11:19 AM, Ikai Lan (Google) < >> [email protected] <ikai.l%[email protected]>> wrote: >> >>> Hey guys, >>> >>> We've been tracking latency spikes and intermittent batches of aborted >>> requests over the last 24 hour period. There were at least 3 periods of >>> spikes yesterday: >>> >>> ~1100 Pacific (moderate, brief period of high) >>> ~1300 Pacific (small) >>> ~1530 Pacific (small) >>> >>> Community reports seem to indicate that these are related to loading >>> requests. If you are being affected, can you report your environment, >>> language and if these times correlate with your experiences in this thread? >>> Are there periods that this particular report did not cover? Please provide >>> measurements, times and application IDs. >>> >>> -- >>> 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 >>> >>> -- >>> 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. >>> >> >> > -- > 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. > -- 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.
