Linux内核参数优化

编辑/etc/sysctl.conf，增加下列内容
kernel.shmmni=1024
kernel.shmmax=4294967296
kernel.shmall=2097152
kernel.sem=250 256000 32 1024
kernel.msgmni=4096
kernel.msgmax=65536
kernel.msgmnb=65536
vm.dirty_background_ratio = 5
vm.dirty_ratio = 10
vm.swappiness = 5
vm.overcommit_memory = 0