The following parameters must be added to the /etc/rc.d/rc.local file that gets executed during system start-up.
<-- begin #max file count updated ~256 descriptors per 4Mb. Specify number of file descriptors based on the amount of system RAM. echo "6553" > /proc/sys/fs/file-max #inode-max 3-4 times the file-max #file not present!!!!! #echo"262144" > /proc/sys/fs/inode-max #make more local ports available echo 1024 25000 > /proc/sys/net/ipv4/ip_local_port_range #increase the memory available with socket buffers echo 2621143 > /proc/sys/net/core/rmem_max echo 262143 > /proc/sys/net/core/rmem_default #above configuration for 2.4.X kernels echo 4096 131072 262143 > /proc/sys/net/ipv4/tcp_rmem echo 4096 13107262143 > /proc/sys/net/ipv4/tcp_wmem #disable "RFC2018 TCP Selective Acknowledgements," and "RFC1323 TCP timestamps" echo 0 > /proc/sys/net/ipv4/tcp_sack echo 0 > /proc/sys/net/ipv4/tcp_timestamps #double maximum amount of memory allocated to shm at runtime echo "67108864" > /proc/sys/kernel/shmmax #improve virtual memory VM subsystem of the Linux echo "100 1200 128 512 15 5000 500 1884 2" > /proc/sys/vm/bdflush #we also do a sysctl sysctl -p /etc/sysctl.conf -- end -->
Additionally, create an /etc/sysctl.conf file and append it with the following values:
<-- begin #Disables packet forwarding net.ipv4.ip_forward = 0 #Enables source route verification net.ipv4.conf.default.rp_filter = 1 #Disables the magic-sysrq key kernel.sysrq = 0 fs.file-max=65536 vm.bdflush = 100 1200 128 512 15 5000 500 1884 2 net.ipv4.ip_local_port_range = 1024 65000 net.core.rmem_max= 262143 net.core.rmem_default = 262143 net.ipv4.tcp_rmem = 4096 131072 262143 net.ipv4.tcp_wmem = 4096 131072 262143 net.ipv4.tcp_sack = 0 net.ipv4.tcp_timestamps = 0
kernel.shmmax = 67108864
For further information on tuning Solaris system see the Solaris Tunable Parameters Reference Manual.