I was wondering what are the best settings for my 4 servers - here are the specs:
32GB RAM
2 Quad core (8 CPUs)
300GB Storage
Also what about TCP tuning? This is what I have so far - Thanks
Kernel sysctl configuration file for Red Hat Linux
For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and
sysctl.conf(5) for more details.
Controls IP packet forwarding
net.ipv4.ip_forward = 0
Controls source route verification
net.ipv4.conf.default.rp_filter = 1
Do not accept source routing
net.ipv4.conf.default.accept_source_route = 0
Controls the System Request debugging functionality of the kernel
kernel.sysrq = 1
Controls whether core dumps will append the PID to the core filename
Useful for debugging multi-threaded applications
kernel.core_uses_pid = 1
Controls the use of TCP syncookies
net.ipv4.tcp_syncookies = 0
Controls the maximum size of a message, in bytes
kernel.msgmnb = 65536
Controls the default maxmimum size of a mesage queue
kernel.msgmax = 65536
Controls the maximum shared segment size, in bytes
kernel.shmmax = 68719476736
Controls the maximum number of shared memory segments, in pages
kernel.shmall = 4294967296
Decrease the time default value for tcp_fin_timeout connection
net.ipv4.tcp_fin_timeout = 30
Decrease the time default value for tcp_keepalive_time connection
net.ipv4.tcp_keepalive_time = 1800
Turn off the tcp_window_scaling
net.ipv4.tcp_window_scaling = 0
Turn off the tcp_sack
net.ipv4.tcp_sack = 0
Turn off the tcp_timestamps
net.ipv4.tcp_timestamps = 0