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 yoann piteau (yoannp90)
Sopra group

Sopra group
FR
yoannp90 Member since 2012 6 posts
Sopra group
Posted: April 8, 2016
Last activity: September 11, 2016
Posted: 8 Apr 2016 5:34 EDT
Last activity: 11 Sep 2016 22:16 EDT
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DEFAULT_MAX_HOST_CONNECTIONS

Hello,

Sorry for my English,


In code of com.pega.apache class this default configuration we find :


public static final int DEFAULT_MAX_HOST_CONNECTIONS = 2


with this explanation :
Clients that use persistent connections SHOULD limit the number of
simultaneous connections that they maintain to a given server. A
single-user client SHOULD NOT maintain more than 2 connections with
any server or proxy. A proxy SHOULD use up to 2*N connections to
another server or proxy, where N is the number of simultaneously
active users. These guidelines are intended to improve HTTP response
times and avoid congestion.

<<A single-user client SHOULD NOT maintain more than 2 connections with any server or proxy.>>

A single-user client correspond that an jboss application server instance, and in MACIF context we have approximatively 150-200 end user requestors per jboss application server instance


So these 2 connections are not enought for our application, one jboss instance can use 2 connections max, or we have 200 users per jboss instances.

So we encounter some contention, blocking.


How we can update this configuration to increase this.

System Administration Data Integration Low-Code App Development
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Posted: 5 years ago
Posted: 11 Apr 2016 8:40 EDT
Kevin Zheng (KevinZheng_GCS)
PEGA
Director, Software Solutions Engineering
Pegasystems Inc.
US

The configuration you mentioned is specific to connect-soap integration (soap connector), not directly related to concurrent end users (unless each user action generates connect-soap call). There are DSS controlling these - default values may be different pending on the version of your PRPC:

a. Total connections

                        int maxTotalConnections = 1000;

                        String maxConnectionsString = tools.getSystemSettings()

                                .getDynamic("Pega-IntegrationEngine",

                                        "Axis2_Max_Connections");

                        }

b. Total connection per host

                        //Total number of connections to single host in the ConnectionPoolManager.

                        int maxHostConnections = 100;

                        String maxHostConnectionString = tools

                                .getSystemSettings().getDynamic(

                                        "Pega-IntegrationEngine",

                                        "Axis2_Max_HostConnections");
Posted: 4 years ago
Posted: 11 Sep 2016 22:16 EDT
Naren Karanam (NarenKaranam)
Tata Consultancy Services

Tata Consultancy Services
JP

Hi,


We have similar issue, Pega 7 is on WAS runtimes and I can see WAS WebContainer threads going hung while these attempt Socket write operation ( at connectSOAP).


Does pega use Apache MutlithreadedHttpClientManager ?


What would be the optimum value should I set for Max total host connections if my avg parallel users (using this particaular connectSOAP  is around 20) and avg SOAP payload is ~6MB ?


Also, through which DSS can I control connectionsStaleCheckingEnabled of Apche HTTP API?


Thanks in adance!


Naren