linux下通过/proc查看进程的limit

比如要查看docker 进程的limits.先找到进程号。

[root@inspur_1 14453]# service docker status
Redirecting to /bin/systemctl status docker.service
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)
Active: active (running) since Mon 2020-04-27 16:03:23 CST; 6min ago
Docs: https://docs.docker.com
Main PID: 14453 (dockerd)
Tasks: 17
Memory: 117.3M
CGroup: /system.slice/docker.service
└─14453 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

Apr 27 16:03:22 inspur_1 dockerd[14453]: time="2020-04-27T16:03:22.497696746+08:00" level=info msg="ClientConn switching balancer to \"pick_first\"" module=grpc
Apr 27 16:03:22 inspur_1 dockerd[14453]: time="2020-04-27T16:03:22.880541994+08:00" level=warning msg="Your kernel does not support cgroup blkio weight"
Apr 27 16:03:22 inspur_1 dockerd[14453]: time="2020-04-27T16:03:22.880625548+08:00" level=warning msg="Your kernel does not support cgroup blkio weight_device"
Apr 27 16:03:22 inspur_1 dockerd[14453]: time="2020-04-27T16:03:22.881084580+08:00" level=info msg="Loading containers: start."
Apr 27 16:03:23 inspur_1 dockerd[14453]: time="2020-04-27T16:03:23.235106951+08:00" level=info msg="Default bridge (docker0) is assigned with an IP address 17...IP address"
Apr 27 16:03:23 inspur_1 dockerd[14453]: time="2020-04-27T16:03:23.319176599+08:00" level=info msg="Loading containers: done."
Apr 27 16:03:23 inspur_1 dockerd[14453]: time="2020-04-27T16:03:23.443215647+08:00" level=info msg="Docker daemon" commit=633a0ea graphdriver(s)=overlay2 version=19.03.5
Apr 27 16:03:23 inspur_1 dockerd[14453]: time="2020-04-27T16:03:23.443474548+08:00" level=info msg="Daemon has completed initialization"
Apr 27 16:03:23 inspur_1 dockerd[14453]: time="2020-04-27T16:03:23.519642632+08:00" level=info msg="API listen on /var/run/docker.sock"
Apr 27 16:03:23 inspur_1 systemd[1]: Started Docker Application Container Engine.
Hint: Some lines were ellipsized, use -l to show in full.

[root@inspur_1 14453]# cat /proc/14453/limits
Limit Soft Limit Hard Limit Units
Max cpu time unlimited unlimited seconds
Max file size unlimited unlimited bytes
Max data size unlimited unlimited bytes
Max stack size 8388608 unlimited bytes
Max core file size unlimited unlimited bytes
Max resident set unlimited unlimited bytes
Max processes unlimited unlimited processes
Max open files 65536 65536 files
Max locked memory 65536 65536 bytes
Max address space unlimited unlimited bytes
Max file locks unlimited unlimited locks
Max pending signals 64055 64055 signals
Max msgqueue size 819200 819200 bytes
Max nice priority 0 0
Max realtime priority 0 0
Max realtime timeout unlimited unlimited us