IBM 6.1.X How-to-Set ndd -set /dev/tcp PARAMETER VALUE, S O L A R I S, N E T W O R K T U N I N G

S O L A R I S

N E T W O R K T U N I N G

For Solaris, use the ndd command to set the following TCP layer parameters. These will take effect immediately, improving the network layer performance in high-volume environments. We use the following settings in Portal server running Solaris 10:

How-to-Set:ndd -set /dev/tcp<PARAMETER> <VALUE>

Table 14: Solaris Network Settings

Parameter	Value
tcp_time_wait_interval	60000
tcp_keepalive_interval	15000
tcp_fin_wait_2_flush_interval	67500
tcp_conn_req_max_q	16384
tcp_conn_req_max_q0	16384
tcp_xmit_hiwat	400000
tcp_recv_hiwat	400000
tcp_cwnd_max	2097152
tcp_ip_abort_interval	60000
tcp_rexmit_interval_initial	4000
tcp_rexmit_interval_max	10000
tcp_rexmit_interval_min	3000
tcp_max_buf	4194304

K E R N E L T U N I N G

Our Portal Server is running on Solaris 10. In Solaris 10, we use the following ‘projmod’ commands to set system parameters. After making the changes, we must logout then login to take these changes into effect. To examine your current settings, do ‘cat /etc/project’.

projmod -s -K 'project.max-shm-memory=(privileged,4294967296,deny)' user.root

projmod -s -K 'project.max-shm-ids=(privileged,1024,deny)' user.root

projmod -s -K 'project.max-sem-ids=(privileged,1024,deny)' user.root

projmod -s -K 'process.max-sem-nsems=(privileged,4098,deny)' user.root

projmod -s -K 'process.max-sem-ops=(privileged,16384,deny)' user.root

projmod -s -K 'process.max-file-descriptor=(privileged,16384,deny)' user.root

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W E BS P HE R E P O R T AL V 6 . 1 T U N I N G G U I D E