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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 le 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.
Tuning for Solaris on x86
The following are some options to consider when tuning Solaris on x86 for Application Server
and HADB:
■
“File Descriptors” on page 100
■
“IP Stack Settings” on page 99
TuningforSolaris onx86
SunGlassFishEnterpriseServer2.1PerformanceTuningGuide • January200998