Ok then. Thank you very much

Felipe Quintella


2010/6/10 John Patterson <[email protected]>

> I haven't noticed a problem calling System.currentTimeMillis().  Would be
> surprising if this was using a lot of CPU.
>
> On 10 Jun 2010, at 11:16, Felipe Quintella Correia wrote:
>
> Hi John,
>
> I managed to implement this and now I can do a proper clean up after
> 25seconds. But now I'm getting cpu_ms red warnings for every task I run. I
> think that's exactly because it runs a method to calculate the time spent in
> every iteration... Have you been able to optimize this somehow? Or maybe it
> isn't even because of that, but if you have some advice, I'm happy to take
> it.
>
> Thank you again.
>
> *#06-09 08:25PM 26.600 /canalparser?main=updateShows&tasknumber=1 200
>> 8262ms 2175cpu_ms 1320api_cpu_ms 0kb AppEngine-Google; (+
>> http://code.google.com/appengine)*
>> *      See details*
>>
>> *      0.1.0.2 - - [09/Jun/2010:20:25:34 -0700] "GET
>> /canalparser?main=updateShows&tasknumber=1 HTTP/1.1" 200 0 "
>> http://tvguidebr.appspot.com/canalparser?main=scheduleShowsUpdate";
>> "AppEngine-Google; (+http://code.google.com/appengine)"*
>>
>> *  I 06-09 08:25PM 26.608 braziltvguide.ParseCanaisServlet doGet:
>> Starting thread*
>> *  I 06-09 08:25PM 26.778 [tvguidebr/1.342561233485567613].<stdout>:
>> Updating Shows for AXN (1 of 112)*
>> *  I 06-09 08:25PM 26.778 braziltvguide.ParseCanaisServlet updateShows:
>> Updating Shows for AXN (1 of 112)*
>> *  I 06-09 08:25PM 34.855 braziltvguide.ParseCanaisServlet doGet: Ending
>> thread - Timer: 8247ms*
>>
>> *#06-09 08:24PM 59.092 /canalparser?main=updateShows&tasknumber=0 200
>> 17491ms 2666cpu_ms 1364api_cpu_ms 0kb AppEngine-Google; (+
>> http://code.google.com/appengine)*
>> *      See details*
>>
>> *      0.1.0.2 - - [09/Jun/2010:20:25:16 -0700] "GET
>> /canalparser?main=updateShows&tasknumber=0 HTTP/1.1" 200 0 "
>> http://tvguidebr.appspot.com/canalparser?main=scheduleShowsUpdate";
>> "AppEngine-Google; (+http://code.google.com/appengine)"*
>>
>> *   I 06-09 08:24PM 59.391 braziltvguide.ParseCanaisServlet doGet:
>> Starting thread*
>> *   I 06-09 08:24PM 59.572 [tvguidebr/1.342561233485567613].<stdout>:
>> Updating Shows for A&E Mundo (0 of 112)*
>> *   I 06-09 08:24PM 59.572 braziltvguide.ParseCanaisServlet updateShows:
>> Updating Shows for A&E Mundo (0 of 112)*
>> *   I 06-09 08:25PM 16.572 braziltvguide.ParseCanaisServlet doGet: Ending
>> thread - Timer: 17181ms*
>>
>>
>> *#06-09 08:24PM 58.807 /canalparser?main=scheduleShowsUpdate 200 569ms
>> 1369cpu_ms 1039api_cpu_ms 0kb Mozilla/5.0 (Macintosh; U; Intel Mac OS X
>> 10.6; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3,gzip(gfe)*
>> *      See details*
>>
>> *      201.29.172.42 - - [09/Jun/2010:20:24:59 -0700] "GET
>> /canalparser?main=scheduleShowsUpdate HTTP/1.1" 200 0 - "Mozilla/5.0
>> (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.3) Gecko/20100401
>> Firefox/3.6.3,gzip(gfe)"*
>>
>> *   I 06-09 08:24PM 58.821 braziltvguide.ParseCanaisServlet doGet:
>> Starting thread*
>> *   I 06-09 08:24PM 59.115 braziltvguide.ParseCanaisServlet
>> scheduleShowsUpdate: Scheduling ShowsUpdate for channel 1 of 3*
>> *   I 06-09 08:24PM 59.344 braziltvguide.ParseCanaisServlet
>> scheduleShowsUpdate: Scheduling ShowsUpdate for channel 2 of 3*
>> *   I 06-09 08:24PM 59.370 braziltvguide.ParseCanaisServlet
>> scheduleShowsUpdate: Scheduling ShowsUpdate for channel 3 of 3*
>> *   I 06-09 08:24PM 59.370 braziltvguide.ParseCanaisServlet doGet: Ending
>> thread - Timer: 549ms*
>>
>
>
>
>
> Felipe Quintella
>
>
>
> 2010/6/7 John Patterson <[email protected]>:
> > Yes just use System.currentTimeMillis() to check in every iteration of
> your
> > tasks main loop.
> >
> > On 7 Jun 2010, at 09:57, Felipe Quintella Correia wrote:
> >
> >> I'll try this approach and start my clean up around 25seconds.
> >>
> >> Do you know any reliable timer I can count on? Or do I have to make
> >> one of my own?
> >>
> >> Thank you very much.
> >>
> >> Felipe Quintella
> >>
> >>
> >>
> >> 2010/6/6 John Patterson <[email protected]>:
> >>>
> >>> It looks like after catching the DEE a HardDEError is probably thrown
> >>> which
> >>> causes the server instance to quit and the next request will cause a
> new
> >>> instance to be spun up.
> >>>
> >>> I had to give up catching DEE's - you don't get enough time to reliably
> >>> start a new task.  The only option seems to be to start your clean up
> >>> code
> >>> after 25 seconds for example.
> >>>
> >>> The other "request aborted..." errors are due to your app restarting
> and
> >>> taking too long.  The request that kills the server instance is
> followed
> >>> by
> >>> other requests that will time out after 10 seconds if you app has not
> >>> finished reloading.
> >>>
> >>> So two things to work on: 1) clean up task before DEE thrown  2) speed
> up
> >>> app loading time
> >>>
> >>> John
> >>>
> >>> On 6 Jun 2010, at 21:19, Felipe Quintella Correia wrote:
> >>>
> >>>> Hello,
> >>>>
> >>>> I hope someone can help me. Even though this is not a critical
> >>>> problem, it's really annoying me. Every time i catch a
> >>>> DeadlineExceededException and I try to patch things up and end my
> >>>> thread properly I get a
> >>>>
> >>>> (Error code 104). I already tried searching everywhere, tried ending
> >>>> the thread immediately, throwing another exception, yadda yadda... But
> >>>> I always end up with this error after my logs. The clean up is
> >>>> properly done, meaning I get what I should (new tasks in queue to
> >>>> continue the process and the logs I made while cleaning up). I really
> >>>> have no idea what to do.
> >>>>
> >>>> Log:
> >>>>
> >>>> #06-05 10:21PM 33.811 /canalparser?main=updateShows&tasknumber=29 200
> >>>> 33423ms 4487cpu_ms 2135api_cpu_ms 0kb AppEngine-Google;
> >>>> (+http://code.google.com/appengine)
> >>>>    See details
> >>>>
> >>>>    0.1.0.2 - - [05/Jun/2010:22:22:07 -0700] "GET
> >>>> /canalparser?main=updateShows&tasknumber=29 HTTP/1.1" 200 0
> >>>> "http://tvguidebr.appspot.com/canalparser?main=scheduleShowsUpdate";
> >>>> "AppEngine-Google; (+http://code.google.com/appengine)"
> >>>> "tvguidebr.appspot.com"
> >>>>
> >>>>  I 06-05 10:21PM 38.099
> >>>>
> >>>>    braziltvguide.ParseCanaisServlet doGet: Starting thread
> >>>>
> >>>>  I 06-05 10:21PM 38.289
> >>>>
> >>>>    braziltvguide.ParseCanaisServlet updateShows: Updating Shows for
> >>>> E! Entertainment (29 of 112)
> >>>>
> >>>>  W 06-05 10:22PM 07.079
> >>>>
> >>>>    braziltvguide.ParseCanaisServlet updateShows: Deadline Detected
> >>>> - Ending Thread
> >>>>
> >>>>  I 06-05 10:22PM 07.079
> >>>>
> >>>>    braziltvguide.ParseCanaisServlet doGet: Ending thread - Timer:
> >>>> 28980ms
> >>>>
> >>>>  W 06-05 10:22PM 07.215
> >>>>
> >>>>    A serious problem was encountered with the process that handled
> >>>> this request, causing it to exit. This is likely to cause a new
> >>>> process to be used for the next request to your application. If you
> >>>> see this message frequently, you may be throwing exceptions during the
> >>>> initialization of your application. (Error code 104)
> >>>>
> >>>>
> >>>>
> >>>> Another error I get in a frequent basis, but I don't know if they are
> >>>> related is:
> >>>> 06-05 10:21PM 43.823
> >>>>
> >>>> 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.
> >>>>
> >>>>
> >>>> The task eventually gets done after retrying a certain number of times
> >>>> (usually 1 but all the way up to 5 or 6).
> >>>>
> >>>> Thank you in advance,
> >>>> Felipe Quintella
> >>>>
> >>>> --
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