Put it not in a blog.
Consider using Static (depending what else you are doing)
With out code it is hard to tell what you are doing but you may be using API
cpu and not CPU Cpu
Most of my CPU bill is API.
-Original Message-
From: google-appengine@googlegroups.com
[mailto:google-appengine@googlegroups.com] On Behalf Of stevep
Sent: Saturday, May 14, 2011 8:04 AM
To: Google App Engine
Subject: [google-appengine] What's going on with my CPU times
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
466ms4,903cpu
182ms2,922cpu
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)
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