Re: Reg: IBMi Webservice HTTP Server Performance Suggesstions -- RPG400-L

Hi Alan,

For pinging IBM from command prompt, it is taking 60ms.

Prior to CGI program call exercise, I am using the same server and same
postman tool with bigger RPG program which updates some files and do a
bunch of process with a bigger JSON document as input and sending the
bigger JSON document as response using IWS. I could see the transaction is
getting completed in around 270ms as per postman.

Due to some drawbacks in IWS like For Error Status code i cannot send back
the JSON document in response to the client, i thought of trying CGI
program call method by eliminating the Application Server, but for a simple
3 line RPG program it is taking 500ms.

I am sure i am missing something with the CGI method or some configuration
is not proper. But i am not able to sort it out.

Regards,
Surender K

On Tue, Dec 17, 2019 at 10:06 AM Alan Campin <alan0307d@xxxxxxxxx> wrote:

How much time does it take if you ping the ibm I?

Are you close to the ibm I or is it in a corporate data center miles away?

On Tue, Dec 17, 2019, 7:01 AM Suren K <suren7437@xxxxxxxxx> wrote:

Hi Bradley,

I stored the timestamp value in the first and last line of the program to
calculate the time taken by Program (Which contains those three lines).

Its

taking only 1ms or 2ms to complete it. But the tool which i am using to
execute the transaction is postman, which says the total transaction took
500ms.

I am not sure where the 498ms delay is happening... Any idea Bradley?

Also, once this performance issue is resolved, I am planning to use Scott
Klement's JSON Parser (YAJLINTO) and Data Generator (YAJLDTAGEN) to
parse/generate the JSON document.

Regards,
Surender K

On Mon, Dec 16, 2019 at 5:08 PM B Stone <bvstone@xxxxxxxxx> wrote:

Instead of using the APIs, have you tried installing Scott Klement's

YAJL

and used yajl_stdin_load_tree() in your CGI program instead? It does

use

the same APIs under the covers.

Bradley V. Stone
www.bvstools.com
MAILTOOL Benefit #2 <https://www.bvstools.com/mailtool.html>: The

ability

to specify a "From" and/or "Reply To" email address!

On Mon, Dec 16, 2019 at 3:17 PM Suren K <suren7437@xxxxxxxxx> wrote:

Hi All,

I am getting some performance issue. Your suggestions will be a great

help

to me and very much appreciated.

Earlier, I was using IWS as web service and trying some POST method
transactions (JSON as Input and JSON as response, used both DATA-INTO

and

DATA-GEN for JSON Conversions). It was taking 300 milliseconds for
processing a transaction.

Now, i thought of using only HTTP Server and using CGI program calls

to

interact with RPG. I created a new HTTP Server and updated the
configuration to add the CGI program call. Also, I created a sample

program

which contains only 3 line of code (Line 1 will fetch the input
using QtmhRdStin API, Line 2 hard coded sample response JSON string

of

100

character length, Line 3 send back the hard coded response
using QtmhWrStout API).

But the CGI program call method is taking 500 milliseconds for

processing

the sample program (Program with 3 lines of code).

Any configurations which i need to take care in HTTP Server to

increase

the

performance?

Regards,
Surender K
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