RHEL Kernel Performance Optimization, Characterization ... - Red Hat

Tuning ­ how to set kernel parameters/proc[root@foobar fs]# cat /proc/sys/kernel/sysrq (see “0”)[root@foobar fs]# echo 1 > /proc/sys/kernel/sysrq[root@foobar fs]# cat /proc/sys/kernel/sysrq (see “1”)Sysctl command[root@foobar fs]# sysctl kernel.sysrqkernel.sysrq = 0[root@foobar fs]# sysctl ­w kernel.sysrq=1kernel.sysrq = 1[root@foobar fs]# sysctl kernel.sysrqkernel.sysrq = 1Edit the /etc/sysctl.conf file# Kernel sysctl configuration file for Red Hat Linux# Controls the System Request debugging functionality of the kernelkernel.sysrq = 1