Hi Alex,
No, I don't think you're doing it wrong. Your post encouraged me to find
out the results of our internal analysis, which came up similar to what you
were seeing. The good news is that there are a few different efforts
underway to chip away at the latency total. I can't give specifics, but
this is something we're working to improve.
I wouldn't expect Endpoints to be as fast as ProtoRPC, but hopefully we can
close the gap a bit. I also hope that the extra features provided by
Endpoints (currently, or in the future) will make it worth the latency hit.
Thanks,
Dan
On Mon, Apr 15, 2013 at 2:49 PM, alex <a...@cloudware.it> wrote:
> Hey, Dan. So, I basically took those numbers from logs of one of my
> apps (Python 2.7, threadsafe=true, SDK v1.7.7)
>
> I was looking at the logs the other day and noticed all Endpoints API
> calls were taking at least 200ms up to 400-500ms (well, I clearly had
> some Datastore and other stuff going on for it to be 500ms).
>
> I started experimenting and ended up with those two simple classes,
> EndpointsTest vs ProtoRpcTest, and TestMsg with the only msg string
> field.
>
> I then started calling their test method using curl (manually from a
> terminal) and watch the logs, for maybe 15-20 mins repeatedly with
> about 0.3-0.5 rps rate. I did the average in my head. Pretty easy - it
> never went lower than 200ms and higher than 270ms for
> EndpointsTest.test, and was in between 6ms-12ms for ProtoRpcTest.test.
>
> This was running an app in EU datacenters. I thought I'd try it with
> anothe app in US but got the same results.
>
> Maybe I was doing it all wrong. Actually, I'll be happy to hear that.
>
> Please let me know if this makes sense or I'm just comparing apples to
> oranges.
>
> On Mon, Apr 15, 2013 at 11:19 PM, Dan Holevoet
> <danielholev...@google.com> wrote:
> > Hi Alex,
> >
> > Can you share a bit more information about how you performed your tests?
> Are
> > those numbers averages? How many times did you call both APIs? Was this
> > repeatable or did you run the test multiple times?
> >
> > Thanks,
> > Dan
> >
> >
> > On Sat, Apr 13, 2013 at 1:46 AM, alex <a...@cloudware.it> wrote:
> >>
> >> I'm not sure it's even possible (to reduce the overhead), and I do
> >> understand there's another infrastructure layer that uses ProtoPRC lib,
> but
> >> still comare this:
> >>
> >> @endpoints.api(name='test', version='v1')
> >> class EndpointsTest(remote.Service):
> >> @endpoints.method(VoidMessage, TestMsg)
> >> def test(req):
> >> return TestMsg(msg='Hello there')
> >>
> >> curl /test/v1/test
> >> {msg:'Hello there'}
> >>
> >> - results in at least 200ms
> >>
> >>
> >> to this:
> >>
> >> class ProtoRpcTest(remote.Service):
> >> @remote.method(VoidMessage, TestMsg)
> >> def test(req):
> >> return TestMsg(msg='Hello there')
> >>
> >> curl -X POST /prototest.test
> >> {msg:'Hello there'}
> >>
> >> - results in about 7-10ms
> >>
> >>
> >> There seem to be a few additional roundtrips going on when making
> requests
> >> via Endpoints.
> >> Do you guys think it's possible to reduce the latency?
> >>
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> >
> >
> >
> >
> > --
> > Dan Holevoet
> > Google Developer Relations
> >
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Google Developer Relations
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