调优之内存调优-NUMA

来源：互联网发布：java批量上传文件编辑：程序博客网时间：2024/05/20 16:37

Non-Uniform Memory Access (NUMA)

[root@uplook ~]# numactl --show 服务器要支持
policy: default
preferred node: current
physcpubind: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23   24个逻辑cpu
cpubind: 0 1
nodebind: 0 1
membind: 0 1

[root@uplook ~]# numactl --hardware
available: 2 nodes (0-1)   2个numa节点 1个不支持
node 0 cpus: 0 1 2 3 4 5 12 13 14 15 16 17
node 0 size: 32740 MB
node 0 free: 544 MB
node 1 cpus: 6 7 8 9 10 11 18 19 20 21 22 23
node 1 size: 32768 MB
node 1 free: 108 MB
node distances:
node   0   1
  0:    10  21
  1:    21  10

节点0 访问0号节点距离为10 访问远端21 就近访问

cgroup:
LAB1:
[root@uplook ~]# vim /etc/cgconfig
group node0 {
           cpuset {
                cpuset.cpus=0-5,12-17;
                cpuset.mems=0;    内存节点
           }
}
group node1 {
           cpuset {
                cpuset.cpus=6-11,18-23;
                cpuset.mems=1;
           }
}

[root@uplook ~]# vim /etc/cgrules.conf
*:/usr/sbin/httpd cpuset node0/

[root@uplook ~]# service cgred restart
[root@uplook ~]# service cgconfig restart

查看进程工作的CPU及内存节点：
[root@uplook ~]# watch -n.5 ps o psr,comm,pid

top 按f命令，添加字段j，显示进程上次使用的的CPU
rhel7 top F 国标移动到P 空格选择 shfit+W保存

[root@uplook ~]# numastat
                                node0             node1
numa_hit                    68147645       102356480
numa_miss                 914974           341117
numa_foreign              341117          914974
interleave_hit              20159            20155
local_node                  67910717      102332020
other_node                 1151902        365577

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