is it a problem when cat /proc/pid/status
I want to know whether the NUMA bound memory node with CONFIG_CGROUPS related or associted with NUMA binding.
I wrote an example test,the results are as follows.
Quoted 8 lines
euler-linux:/home/zhongjiang # numactl --membind=1 ./new &
[1] 6529
euler-linux:/home/zhongjiang # ps -ef | grep newroot 6529 4483 0 14:40 pts/1 00:00:00 ./new root 6556 4483 0 14:40 pts/1 00:00:00 grep new euler-linux:/home/zhongjiang # cat /proc/6529/status Name: new State: S (sleeping)
........
Quoted 6 lines
Cpus_allowed: ffffff Cpus_allowed_list: 0-23 Mems_allowed: 00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,007fffff Mems_allowed_list: 0-22 voluntary_ctxt_switches: 19 nonvoluntary_ctxt_switches: 0
euler-linux:/home/zhongjiang # numactl --membind=3 ./new &
[1] 9113
euler-linux:/home/zhongjiang # ps -ef | grep mew
root 9140 8948 0 14:55 pts/1 00:00:00 grep mew
euler-linux:/home/zhongjiang # ps -ef | grep new
root 9113 8948 0 14:55 pts/1 00:00:00 ./new root 9209 8948 0 14:55 pts/1 00:00:00 grep new euler-linux:/home/zhongjiang # cat /proc/9113/status Name: new State: S (sleeping) Tgid: 9113 Ngid: 0 Pid: 9113 PPid: 8948 ...... Cpus_allowed: ffffff Cpus_allowed_list: 0-23 Mems_allowed: 00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,007fffff Mems_allowed_list: 0-22 voluntary_ctxt_switches: 26 nonvoluntary_ctxt_switches: 0
Through the comparison of the above, I can find Whatever I use node for binding, the mems_allowed fields has been no change