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Increase memory allocated by modifying /bin/wso2server.sh with the following setting:

• -Xms2048m -Xmx2048m -XX:MaxPermSize=1024m

Set the following in /repository/conf/nhttp.properties file:

• http.socket.timeout=60000
• snd_t_core=200 
• snd_t_max=250 
• snd_io_threads=16 
• lst_t_core=200 
• lst_t_max=250 
• lst_io_threads=16 

Note that the number of threads should be equal to the number of processor cores .

Apply the following to get the maximum outcome for login requests.

In Set the following in <APIM_HOME>/repository/conf/axis2/axis2_client.xml file:

<parameter name="defaultMaxConnPerHost">1000</parameter> 
<parameter name="maxTotalConnections">30000</parameter> 

Mysql Set the MySQL maximum connections:

mysql> show variables like "max_connections"; 
 max_connections was 151 
 set to global max_connections = 250; 

Open Files Limit: set Set the open files limit to 200000 by editing the /etc/sysctl.conf file:

sudo sysctl -p

Set the following in CatlinaServer.sh batch file:

maxThreads="750" 
minSpareThreads="150" 
disableUploadTimeout="false" 
enableLookups="false" 
connectionUploadTimeout="120000" 
maxKeepAliveRequests="600" 
acceptCount="600" 

In Set the following connection pool elements in <APIM_HOME>/repository/conf/datasources/master-datasources.xml file:

<maxActive>50</maxActive>
<maxWait>60000</maxWait>
<testOnBorrow>true</testOnBorrow>
<validationQuery>SELECT 1</validationQuery>
<validationInterval>30000</validationInterval>

Note that you set the <testOnBorrow> element to true and provide a validation query (e.g., in Oracle, SELECT 1 FROM DUAL), which is run to refresh any stale connections in the connection pool. If you set a <validationInterval> also, the validation query will be run only after a defined time interval between connection retrievals. If not, Set a suitable value for the <validationInterval> element, which defaults to 30000 milliseconds. It determines the time period after which the next iteration of the validation query will be run each time on a connection is retrieved, and this can be a performance overheadparticular connection. It avoids excess validations and ensures better performance.