It seems every request that used more than 1000 cpu ms will be consider as "high amount of cpu usage".
---------- keakon My blog(Chinese): www.keakon.net Blog source code: https://bitbucket.org/keakon/doodle/ On Thu, Dec 16, 2010 at 6:38 PM, Matija <matija.jerko...@gmail.com> wrote: > Hi, I am using google app engine from beginning. From the time when there > was high cpu quota tickets. I understand difference between request time, > cpu and api time. > > In one of my request I am putting two objects in one batch operation to > datastore (from same entity group in transaction, although this > is irrelevant for this discussion). I noticed in log these request/cpu/api > times: > > 12-16 02:03AM 35.944 200 198ms 1847cpu_ms 1700api_cpu_ms > 12-16 02:03AM 35.813 200 128ms 1828cpu_ms 1700api_cpu_ms > 12-16 02:03AM 35.712 200 107ms 1829cpu_ms 1700api_cpu_ms > 12-16 02:03AM 35.586 200 145ms 1865cpu_ms 1700api_cpu_ms > 12-16 02:03AM 35.524 200 182ms 1810cpu_ms 1700api_cpu_ms > 12-16 02:03AM 35.387 200 203ms 1938cpu_ms 1700api_cpu_ms > 12-16 02:03AM 35.438 200 151ms 1791cpu_ms 1700api_cpu_ms > 12-16 02:03AM 35.298 200 171ms 1829cpu_ms 1700api_cpu_ms > > I would probably ignore there lines if they are not in red color with > triangle sign to warn me about 'high amount of cpu usage'. > > Reason for this 'high' api usage is index creation. Cost for first object > is around 1200 api_cpu_ms and for second 500 api_cpu_ms (some changes and > appstat revealed data). > > First object has 8 indexes where first attribute is list of strings (from 5 > to 11 members, this usage is for 11 members). This 8 indexes are for ability > to sort on 4 columns (ascending and descending). If I leave this list empty, > api_cpu_ms is around 330 ms for first object. Of course I must not leave > list empty if I want this user interface feature. > > I understand everything about this 'issue' and I am fine with 'high' cpu > usage, because my request time is around 160 ms, top 200 ms. > > Question: Is Google App Engine fine with my 'high' cpu usage ? Will I > be penalized in any way (new instances, throtle, ...) because of this 'high > abount of CPU' ? > > If GAE is fine and I will not be penalized why don't you change this > 'coloring' schema to use only request time or maybe request time with (cpu > time - api time) ?! This red color will make me crazy ;) > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to google-appeng...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine+unsubscr...@googlegroups.com<google-appengine%2bunsubscr...@googlegroups.com> > . > 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 google-appeng...@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
