Can anyone help me understand these CPU times. I have an on-line handler function that basically does a get_by_id(), and sends out the bytes for a 150x100 pixel jpeg BLOB record value. A pretty straightforward image retrieval from the datastore.
My CPU loads are all over the map. I am $9 paying for 3 instances to stay resident. An instance takes just less than 15 meg of RAM. Very low volumes right now, so maybe that affects this? Looking at AppStats, the function itself is consistently taking 200ms or less for every call. So how am I getting 13,000ms for this simple function? I've copied/pasted a series of calls for this image below. Here is an extract of the last 4 url calls: 242ms...80cpu 351ms...13,740cpu 466ms....4,903cpu 182ms....2,922cpu Looking at the full list below, I only occasionally get fast cpu times. This is the simplest function, can't imagine where the inefficiencies are. Is the HR datastore that slow at pushing a small payload of bytes out the door? Man oh man, averaging these cpu times for a 150x100 pixel jpg, I better switch my image saves/retrieves to S3 mucho soon. Thanks in advance, stevep 2011-05-14 07:20:10.949 /cardimage/59005_t.jpg 200 242ms 80cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) 2011-05-14 07:03:04.967 /cardimage/59005_t.jpg 200 351ms 13740cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) 2011-05-13 14:50:48.065 /cardimage/59005_t.jpg 200 466ms 4903cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) 2011-05-13 13:57:09.990 /cardimage/59005_t.jpg 200 182ms 2922cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) 2011-05-13 10:39:27.922 /cardimage/59005_t.jpg 200 196ms 1474cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) 2011-05-13 09:01:08.347 /cardimage/59005_t.jpg 200 494ms 777cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) 2011-05-13 08:13:33.672 /cardimage/59005_t.jpg 200 501ms 435cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) 2011-05-13 07:23:52.577 /cardimage/59005_t.jpg 200 371ms 117cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) 2011-05-13 07:06:09.403 /cardimage/59005_t.jpg 200 880ms 1585cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) 2011-05-13 05:39:36.415 /cardimage/59005_t.jpg 200 728ms 6460cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) 2011-05-13 03:17:36.456 /cardimage/59005_t.jpg 200 413ms 1252cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) 2011-05-13 00:55:52.879 /cardimage/59005_t.jpg 200 683ms 191cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) 2011-05-12 22:42:57.523 /cardimage/59005_t.jpg 200 342ms 796cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) 2011-05-12 22:06:37.960 /cardimage/59005_t.jpg 200 77ms 66cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) 2011-05-12 22:03:02.608 /cardimage/59005_t.jpg 200 301ms 99cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) 2011-05-12 22:00:49.586 /cardimage/59005_t.jpg 200 393ms 118cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) 2011-05-12 21:54:47.092 /cardimage/59005_t.jpg 200 220ms 45cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) 2011-05-12 21:54:45.633 /cardimage/59005_t.jpg 200 90ms 46cpu_ms 8api_cpu_ms 35kb facebookplatform/1.0 (+http:// developers.facebook.com),gzip(gfe),gzip(gfe),gzip(gfe) -- 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.
