大数据内核调优建议

 

大数据内核调优建议

vim /etc/sysctl.conf

net.ipv4.ip_local_port_range = 1024 65535

fs.inotify.max_user_instances= 8192

fs.inotify.max_queued_events= 16384

fs.inotify.max_user_watches= 524288

fs.file-max = 52706963

fs.nr_open = 52706963

kernel.threads-max = 25165824

kernel.pid_max = 655360

vm.max_map_count = 8388608

vm.dirty_background_ratio = 5

vm.dirty_ratio = 10

vm.dirty_writeback_centisecs = 300

kernel.shmmax = 123695058126

kernel.shmmni = 4096

kernel.shmall = 30198988

kernel.sem = 250 32000 100 128

生效内核配置：sysctl -p

vim/etc/security/limits.conf

root soft nofile 655360

root hard nofile 655360

root soft nproc 655360

root hard nproc 655360

* soft nproc 655360

* hard nproc 655360

* soft nofile 655360

* hard nofile 655360

* soft memlock unlimited

* hard memlock unlimited

* soft core unlimited

* hard core unlimited

* soft stack unlimited

* hard stack unlimited

* soft sigpending 655360

* hard sigpending 655360