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1. To optimize network and OS performance, configure the following settings in /etc/sysctl.conf file of Linux. These settings specify a larger port range, a more effective TCP connection timeout value, and a number of other important parameters at the OS-level.

   Code Block
   net.ipv4.tcp_fin_timeout = 30 fs.file-max = 2097152 net.ipv4.tcp_tw_recycle = 1 net.ipv4.tcp_tw_reuse = 1 net.core.rmem_default = 524288 net.core.wmem_default = 524288 net.core.rmem_max = 67108864 net.core.wmem_max = 67108864 net.ipv4.tcp_rmem = 4096 87380 16777216 net.ipv4.tcp_wmem = 4096 65536 16777216 net.ipv4.ip_local_port_range = 1024 65535

   Info
   When we have the localhost port range configuration lower bound to 1024, there is a possibility that some processes may pick the ports which are already used by WSO2 servers. Therefore, it's good to increase the lower bound as sufficient for production, e.g., 10,000.

2. To alter the number of allowed open files for system users, configure the following settings in /etc/security/limits.conf file of Linux.

   Code Block
   * soft nofile 4096 * hard nofile 65535

   Optimal values for these parameters depend on the environment.

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