详见：[https://www.kernel.org/doc/html/latest/filesystems/proc.html](https://www.kernel.org/doc/html/latest/filesystems/proc.html)

/proc/$pid$/status说明：

| Field                        | Content                                                      |
| ---------------------------- | ------------------------------------------------------------ |
| Name                         | filename of the executable                                   |
| Umask                        | file mode creation mask                                      |
| State                        | state (R is running, S is sleeping, D is sleeping in an uninterruptible wait, Z is zombie, T is traced or stopped) |
| Tgid                         | thread group ID                                              |
| Ngid                         | NUMA group ID (0 if none)                                    |
| Pid                          | process id                                                   |
| PPid                         | process id of the parent process                             |
| TracerPid                    | PID of process tracing this process (0 if not)               |
| Uid                          | Real, effective, saved set, and file system UIDs             |
| Gid                          | Real, effective, saved set, and file system GIDs             |
| FDSize                       | number of file descriptor slots currently allocated          |
| Groups                       | supplementary group list                                     |
| NStgid                       | descendant namespace thread group ID hierarchy               |
| NSpid                        | descendant namespace process ID hierarchy                    |
| NSpgid                       | descendant namespace process group ID hierarchy              |
| NSsid                        | descendant namespace session ID hierarchy                    |
| VmPeak                       | peak virtual memory size                                     |
| VmSize                       | total program size                                           |
| VmLck                        | locked memory size                                           |
| VmPin                        | pinned memory size                                           |
| VmHWM                        | peak resident set size (“high water mark”)                   |
| VmRSS                        | size of memory portions. It contains the three following parts (VmRSS = RssAnon + RssFile + RssShmem) |
| RssAnon                      | size of resident anonymous memory                            |
| RssFile                      | size of resident file mappings                               |
| RssShmem                     | size of resident shmem memory (includes SysV shm, mapping of tmpfs and shared anonymous mappings) |
| VmData                       | size of private data segments                                |
| VmStk                        | size of stack segments                                       |
| VmExe                        | size of text segment                                         |
| VmLib                        | size of shared library code                                  |
| VmPTE                        | size of page table entries                                   |
| VmSwap                       | amount of swap used by anonymous private data (shmem swap usage is not included) |
| HugetlbPages                 | size of hugetlb memory portions                              |
| CoreDumping                  | process’s memory is currently being dumped (killing the process may lead to a corrupted core) |
| THP\_enabled                 | process is allowed to use THP (returns 0 when PR\_SET\_THP\_DISABLE is set on the process |
| Threads                      | number of threads                                            |
| SigQ                         | number of signals queued/max. number for queue               |
| SigPnd                       | bitmap of pending signals for the thread                     |
| ShdPnd                       | bitmap of shared pending signals for the process             |
| SigBlk                       | bitmap of blocked signals                                    |
| SigIgn                       | bitmap of ignored signals                                    |
| SigCgt                       | bitmap of caught signals                                     |
| CapInh                       | bitmap of inheritable capabilities                           |
| CapPrm                       | bitmap of permitted capabilities                             |
| CapEff                       | bitmap of effective capabilities                             |
| CapBnd                       | bitmap of capabilities bounding set                          |
| CapAmb                       | bitmap of ambient capabilities                               |
| NoNewPrivs                   | no_new_privs, like prctl(PR\_GET\_NO\_NEW\_PRIV, …)          |
| Seccomp                      | seccomp mode, like prctl(PR\_GET\_SECCOMP, …)                |
| Speculation\_Store\_Bypass   | speculative store bypass mitigation status                   |
| SpeculationIndirectBranch    | indirect branch speculation mode                             |
| Cpus\_allowed                | mask of CPUs on which this process may run                   |
| Cpus\_allowed\_list          | Same as previous, but in “list format”                       |
| Mems\_allowed                | mask of memory nodes allowed to this process                 |
| Mems\_allowed_list           | Same as previous, but in “list format”                       |
| voluntary\_ctxt\_switches    | number of voluntary context switches                         |
| nonvoluntary\_ctxt\_switches | number of non voluntary context switches                     |

/proc/$pid$/statm说明：

| Field    | Content                         |                                                             |
| -------- | ------------------------------- | ----------------------------------------------------------- |
| size     | total program size (pages)      | (same as VmSize in status)                                  |
| resident | size of memory portions (pages) | (same as VmRSS in status)                                   |
| shared   | number of pages that are shared | (i.e. backed by a file, same as RssFile+RssShmem in status) |
| trs      | number of pages that are ‘code’ | (not including libs; broken, includes data segment)         |
| lrs      | number of pages of library      | (always 0 on 2.6)                                           |
| drs      | number of pages of data/stack   | (including libs; broken, includes library text)             |
| dt       | number of dirty pages           | (always 0 on 2.6)                                           |