Re: .net thin client taking time to establish connection to server node

[Pavel Tupitsyn]

Tried to run the reproducer and got `Cache doesn't exist:
6e7b08b5-3bfd-4026-b322-c4a34ffkafd7_Forms` exception.

On Tue, Oct 1, 2019 at 3:16 PM siva  wrote:

> Hi Pavel,
>
>
> *Maybe something else is affecting request time in staging?*
> chances of others services trying to connect (from front end requests)
>
> *Do you make requests from your local machine to staging environment?*
> yes,i have made a request to the staging environment ignite server from
> local machine console app to test.
>
> *How fast is the connection between thin client and server?
> *
>
> from local machine to local ignite server its taking microseconds and
> milliseconds upto 10ms max
>
> but from local machine to  staging ignite server(cloud) its taking more
> time.
> i have attached the screen shot
>
>
> *Code
> *
>
> This github code describes similer to the client applications trying  to
> the
> ignite server
>
>
> https://github.com/cvakarna/ignitethinclient-reproducer/tree/master/IgniteConnectionTest
> <
> https://github.com/cvakarna/ignitethinclient-reproducer/tree/master/IgniteConnectionTest>
>
>
> This github link similer to the server code
>
> https://github.com/cvakarna/ignitereproducer/tree/master/IgniteReproducerServer
> <
> https://github.com/cvakarna/ignitereproducer/tree/master/IgniteReproducerServer>
>
>
>
>
> <
> http://apache-ignite-users.70518.x6.nabble.com/file/t1379/Screenshot_3.png>
>
>
>
>
>
>
> --
> Sent from: http://apache-ignite-users.70518.x6.nabble.com/
>

Re: .net thin client taking time to establish connection to server node

[siva]

Hi Pavel,


*Maybe something else is affecting request time in staging?*
chances of others services trying to connect (from front end requests)

*Do you make requests from your local machine to staging environment?*
yes,i have made a request to the staging environment ignite server from
local machine console app to test.

*How fast is the connection between thin client and server?
*

from local machine to local ignite server its taking microseconds and
milliseconds upto 10ms max

but from local machine to  staging ignite server(cloud) its taking more
time.
i have attached the screen shot


*Code
*

This github code describes similer to the client applications trying  to the
ignite server 

https://github.com/cvakarna/ignitethinclient-reproducer/tree/master/IgniteConnectionTest

  

This github link similer to the server code
https://github.com/cvakarna/ignitereproducer/tree/master/IgniteReproducerServer

  



 





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Re: .net thin client taking time to establish connection to server node

[Pavel Tupitsyn]

Maybe something else is affecting request time in staging?
Do you make requests from your local machine to staging environment?
How fast is the connection between thin client and server?

On Mon, Sep 30, 2019 at 1:28 PM siva  wrote:

> Hi Pavel,
>
> *Can you please provide a minimal reproducer?*
>
> for reproducing,i have  tried  in local ,its taking minimal time only,but
> from actual application(staging environment (cloud))  its taking more time
> to establish the connection .
>
>
> I have taken 5 minute  duration in staging env ,to create client connection
> total 325 request arrived ,out of these 9 requests taken from 300 ms to 3
> sec.
>
> I have attached the screen shots
>
> <
> http://apache-ignite-users.70518.x6.nabble.com/file/t1379/Screenshot_1.png>
>
>
> <
> http://apache-ignite-users.70518.x6.nabble.com/file/t1379/Screenshot_2.png>
>
>
>
>
> Thanks
> siva
>
>
>
>
>
>
>
>
> --
> Sent from: http://apache-ignite-users.70518.x6.nabble.com/
>

Re: .net thin client taking time to establish connection to server node

[siva]

Hi Pavel,

*Can you please provide a minimal reproducer?*

for reproducing,i have  tried  in local ,its taking minimal time only,but
from actual application(staging environment (cloud))  its taking more time
to establish the connection .


I have taken 5 minute  duration in staging env ,to create client connection
total 325 request arrived ,out of these 9 requests taken from 300 ms to 3
sec.

I have attached the screen shots 

 

 



Thanks
siva








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Re: .net thin client taking time to establish connection to server node

[Pavel Tupitsyn]

Exceptions should not cause a slowdown. Can you please provide a minimal
reproducer?

On Thu, Sep 19, 2019 at 10:41 AM siva  wrote:

> Hi,
>
> *Check CPU and RAM usage on the server*
> Cpu utilization upto 20% max
> RAM More than half memory free
>
>
> *Try increasing thread pool size further*
> Increased to 24 threads
>
>
> Found issue but not sure,like if any exception in executing query ,in that
> time period other clients try to connect ,in that case its taking long
> time.Is that limitation?
>
>
>
> Thanks
> siva
>
>
>
> --
> Sent from: http://apache-ignite-users.70518.x6.nabble.com/
>

Re: .net thin client taking time to establish connection to server node

[siva]

Hi,

*Check CPU and RAM usage on the server*
Cpu utilization upto 20% max 
RAM More than half memory free


*Try increasing thread pool size further*
Increased to 24 threads


Found issue but not sure,like if any exception in executing query ,in that
time period other clients try to connect ,in that case its taking long
time.Is that limitation?



Thanks
siva



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Re: .net thin client taking time to establish connection to server node

[Pavel Tupitsyn]

I did some testing and did not find any inherent limitation for thin client
connection count.
So it is likely that your server is simply overloaded with work.

- Check CPU and RAM usage on the server
- Check Java GC activity with jvisualvm or similar tool and try system
tuning: https://apacheignite.readme.io/docs/jvm-and-system-tuning
- Try increasing thread pool size further

On Tue, Sep 17, 2019 at 9:35 PM Pavel Tupitsyn  wrote:

> So 3 simultaneous connections to one server node, right?
>
> On Tue, Sep 17, 2019 at 12:58 PM siva  wrote:
>
>> Hi,
>>
>> *How many connections do you have?*
>>
>> requests will come from external applications around 30k in duration  of
>> 30
>> min or more.Each request ,  opened connection  not closing  up to 1/2/3
>> min
>> since within the same request it can be multiple calls to ignite.
>>
>> <
>> http://apache-ignite-users.70518.x6.nabble.com/file/t1379/Screenshot_3.png>
>>
>>
>> i have attached sample result
>>
>> Thanks
>> siva
>>
>>
>>
>> --
>> Sent from: http://apache-ignite-users.70518.x6.nabble.com/
>>
>

Re: .net thin client taking time to establish connection to server node

[Pavel Tupitsyn]

So 3 simultaneous connections to one server node, right?

On Tue, Sep 17, 2019 at 12:58 PM siva  wrote:

> Hi,
>
> *How many connections do you have?*
>
> requests will come from external applications around 30k in duration  of 30
> min or more.Each request ,  opened connection  not closing  up to 1/2/3
> min
> since within the same request it can be multiple calls to ignite.
>
> <
> http://apache-ignite-users.70518.x6.nabble.com/file/t1379/Screenshot_3.png>
>
>
> i have attached sample result
>
> Thanks
> siva
>
>
>
> --
> Sent from: http://apache-ignite-users.70518.x6.nabble.com/
>

Re: .net thin client taking time to establish connection to server node

[siva]

Hi,

*How many connections do you have?*

requests will come from external applications around 30k in duration  of 30
min or more.Each request ,  opened connection  not closing  up to 1/2/3 min 
since within the same request it can be multiple calls to ignite.

 

i have attached sample result

Thanks
siva 



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Re: .net thin client taking time to establish connection to server node

[Pavel Tupitsyn]

How many connections do you have? Can you share a reproducer please?

On Tue, Sep 17, 2019 at 12:06 PM siva  wrote:

> Hi,
>
>
> I have increased threadpool size to 20 threads  in xml file as bellow since
> we have 16 cores. But still result is same, taking time to establish
> connection.
>
>
>
>
>
>
>
> Results
> <
> http://apache-ignite-users.70518.x6.nabble.com/file/t1379/Screenshot_1.png>
>
>
>
>
> Thanks
> siva
>
>
>
> --
> Sent from: http://apache-ignite-users.70518.x6.nabble.com/
>

Re: .net thin client taking time to establish connection to server node

[siva]

Hi,


I have increased threadpool size to 20 threads  in xml file as bellow since
we have 16 cores. But still result is same, taking time to establish
connection.







Results
 



Thanks
siva



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Re: .net thin client taking time to establish connection to server node

[Pavel Tupitsyn]

Hi, try increasing ClientConnectorConfiguration.ThreadPoolSize on server
nodes

On Sun, Sep 15, 2019 at 11:10 AM siva  wrote:

> Hi,
>
> We are using *.net thinclient * and *one serever(.net)*.For less number of
> connections,its establishing connection to the server in milliseconds ,but
> as the number of connections increasing(concurrently), establishing
> connection between thin client and server taking in seconds even some times
> taking upto 1 minute.So, is there any tuning to set or need to increase the
> server nodes?
>
>
>
>
>
>
> Thanks
> siva
>
>
>
> --
> Sent from: http://apache-ignite-users.70518.x6.nabble.com/
>