The following are some options to consider when tuning Solaris on x86 for Application Server and HADB:
Some of the values depend on the system resources available. After making any changes to /etc/system, reboot the machines.
Add (or edit) the following lines in the /etc/system file:
set rlim_fd_max=65536 set rlim_fd_cur=65536 set sq_max_size=0 set tcp:tcp_conn_hash_size=8192 set autoup=60 set pcisch:pci_stream_buf_enable=0
These settings affect the file descriptors.
Add (or edit) the following lines in the /etc/system file:
set ip:tcp_squeue_wput=1 set ip:tcp_squeue_close=1 set ip:ip_squeue_bind=1 set ip:ip_squeue_worker_wait=10 set ip:ip_squeue_profile=0
These settings tune the IP stack.
To preserve the changes to the file between system reboots, place the following changes to the default TCP variables in a startup script that gets executed when the system reboots:
ndd -set /dev/tcp tcp_time_wait_interval 60000 ndd -set /dev/tcp tcp_conn_req_max_q 16384 ndd -set /dev/tcp tcp_conn_req_max_q0 16384 ndd -set /dev/tcp tcp_ip_abort_interval 60000 ndd -set /dev/tcp tcp_keepalive_interval 7200000 ndd -set /dev/tcp tcp_rexmit_interval_initial 4000 ndd -set /dev/tcp tcp_rexmit_interval_min 3000 ndd -set /dev/tcp tcp_rexmit_interval_max 10000 ndd -set /dev/tcp tcp_smallest_anon_port 32768 ndd -set /dev/tcp tcp_slow_start_initial 2 ndd -set /dev/tcp tcp_xmit_hiwat 32768 ndd -set /dev/tcp tcp_recv_hiwat 32768