We have experimented with the helloworld endpoints example.  The results
are consistently the same as given earlier

A issue is filed on the issue tracker.  Please note the no.
https://issuetracker.google.com/issues/62043057

Anyone facing the latency issues with the endpoints framework?

Regards,
Rajesh
*www.VeersoftSolutions.com <http://www.veersoftsolutions.com/>*
*www.GainERP.com <https://www.gainerp.com/>*
*Accounting/Inventory/Orders/Sales/Purchase on Google Cloud Platform and
Mobile*


On Tue, May 23, 2017 at 8:27 PM, 'Nicholas (Google Cloud Support)' via
Google App Engine <google-appengine@googlegroups.com> wrote:

> Hey Rajesh,
>
> There are many contributors to latency depending on the variables that we
> observe.  *time_starttransfer* <https://curl.haxx.se/docs/manpage.html#-w>
> for instance, is defined as:
>
>> The time, in seconds, it took from the start until the first byte was
>> just about to be transferred. This includes *time_pretransfer* and also
>> the time the server needed to calculate the result.
>
>
> It thus includes all the time up until the when your endpoint service
> sends its response.  Assuming your curl *time_starttransfer* examples
> correlate to the endpoint log entries, it would seem the majority of the
> time is spent sending and routing the request in this case from the GCE
> instance to the endpoint handler.  While there may be many steps and
> intermediate devices between the each instance, several seconds is
> generally a somewhat high latency.
>
> There aren't any issues presently <https://status.cloud.google.com/> with
> Compute Engine networking or Endpoints.  If you believe this to be an issue
> with the platform, I would recommend filing a public issue on Issue
> Tracker <https://issuetracker.google.com/issues/new> as this forum is
> generally reserved for sharing best practices and design concepts.  When
> reporting an issue, be sure to include a minimal reproduction that can
> reliably demonstrate the latency you describe along with a time frame for
> when you've been able to reproduce these results.
>
>
> On Tuesday, May 23, 2017 at 3:07:16 AM UTC-4, Rajesh Gupta wrote:
>>
>> Hello Team,
>>
>> Java Appengine zone: *asia-southeast1-a*
>>
>> I have Java standard appengine app running  with a simple endpoints api.
>>
>> Also, I have compute engine instance ubuntu created in the same time
>> zone: *asia-southeast1-a.  *By doing this, I was expecting that curl
>> client should get a very quick response with out much latency, as the curl
>> client and server are both running in the same Google data center in the
>> same zone.
>>
>> I run the curl for testing the endpoints api.  Many times, I get a very
>> huge latency.
>>
>> Curl timings: Why the 'time_starttransfer' is so high and varying.
>>
>> rajesh_gupta@instance-3:~$ curl -w "@curl-format.txt" -o NUL -s --data
>> "emailId=vsxyz...@veersoftsolutions.com&password=123456&count=2"
>> https://field-works1.appspot.com/_ah/api/vsloginendpoint/v2/vsLoginIonic2time_namelookup:
>> 0.004 time_connect: 0.009 time_appconnect: 0.110 time_pretransfer: 0.110
>> time_redirect: 0.000 time_starttransfer: 1.059 ---------- time_total:
>> 1.060rajesh_gupta@instance-3:~$ curl -w "@curl-format.txt" -o NUL -s
>> --data "emailId=vsxyz...@veersoftsolutions.com&password=123456&count=2"
>> https://field-works1.appspot.com/_ah/api/vsloginendpoint/v2/vsLoginIonic2time_namelookup:
>> 0.004 time_connect: 0.005 time_appconnect: 0.109 time_pretransfer: 0.109
>> time_redirect: 0.000 time_starttransfer: 14.565 ---------- time_total:
>> 14.565rajesh_gupta@instance-3:~$ curl -w "@curl-format.txt" -o NUL -s
>> --data "emailId=vsxyz...@veersoftsolutions.com&password=123456&count=2"
>> https://field-works1.appspot.com/_ah/api/vsloginendpoint/v2/vsLoginIonic2time_namelookup:
>> 0.004 time_connect: 0.005 time_appconnect: 0.102 time_pretransfer: 0.102
>> time_redirect: 0.000 time_starttransfer: 4.132 ---------- time_total:
>> 4.132rajesh_gupta@instance-3:~$ curl -w "@curl-format.txt" -o NUL -s
>> --data "emailId=vsxyz...@veersoftsolutions.com&password=123456&count=2"
>> https://field-works1.appspot.com/_ah/api/vsloginendpoint/v2/vsLoginIonic2time_namelookup:
>> 0.004 time_connect: 0.005 time_appconnect: 0.106 time_pretransfer: 0.106
>> time_redirect: 0.000 time_starttransfer: 3.930 ---------- time_total:
>> 3.930
>>
>> Sample Appengine Logs:
>>
>> [image: Inline image 1]
>>
>> Regards,
>> Rajesh
>> *www.VeersoftSolutions.com <http://www.VeersoftSolutions.com>*
>> *www.GainERP.com <https://www.gainerp.com>*
>> *Accounting/Inventory/Orders/Sales/Purchase on Google Cloud Platform and
>> Mobile*
>>
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