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Diffstat (limited to 'man5/proc_pid_status.5')
| -rw-r--r-- | man5/proc_pid_status.5 | 384 |
1 files changed, 384 insertions, 0 deletions
diff --git a/man5/proc_pid_status.5 b/man5/proc_pid_status.5 new file mode 100644 index 0000000..fdef477 --- /dev/null +++ b/man5/proc_pid_status.5 @@ -0,0 +1,384 @@ +.\" Copyright (C) 1994, 1995, Daniel Quinlan <quinlan@yggdrasil.com> +.\" Copyright (C) 2002-2008, 2017, Michael Kerrisk <mtk.manpages@gmail.com> +.\" Copyright (C) 2023, Alejandro Colomar <alx@kernel.org> +.\" +.\" SPDX-License-Identifier: GPL-3.0-or-later +.\" +.TH proc_pid_status 5 2023-10-23 "Linux man-pages 6.7" +.SH NAME +/proc/pid/status \- memory usage and status information +.SH DESCRIPTION +.TP +.IR /proc/ pid /status +Provides much of the information in +.IR /proc/ pid /stat +and +.IR /proc/ pid /statm +in a format that's easier for humans to parse. +Here's an example: +.IP +.in +4n +.EX +.RB "$" " cat /proc/$$/status" +Name: bash +Umask: 0022 +State: S (sleeping) +Tgid: 17248 +Ngid: 0 +Pid: 17248 +PPid: 17200 +TracerPid: 0 +Uid: 1000 1000 1000 1000 +Gid: 100 100 100 100 +FDSize: 256 +Groups: 16 33 100 +NStgid: 17248 +NSpid: 17248 +NSpgid: 17248 +NSsid: 17200 +VmPeak: 131168 kB +VmSize: 131168 kB +VmLck: 0 kB +VmPin: 0 kB +VmHWM: 13484 kB +VmRSS: 13484 kB +RssAnon: 10264 kB +RssFile: 3220 kB +RssShmem: 0 kB +VmData: 10332 kB +VmStk: 136 kB +VmExe: 992 kB +VmLib: 2104 kB +VmPTE: 76 kB +VmPMD: 12 kB +VmSwap: 0 kB +HugetlbPages: 0 kB # 4.4 +CoreDumping: 0 # 4.15 +Threads: 1 +SigQ: 0/3067 +SigPnd: 0000000000000000 +ShdPnd: 0000000000000000 +SigBlk: 0000000000010000 +SigIgn: 0000000000384004 +SigCgt: 000000004b813efb +CapInh: 0000000000000000 +CapPrm: 0000000000000000 +CapEff: 0000000000000000 +CapBnd: ffffffffffffffff +CapAmb: 0000000000000000 +NoNewPrivs: 0 +Seccomp: 0 +Seccomp_filters: 0 +Speculation_Store_Bypass: vulnerable +Cpus_allowed: 00000001 +Cpus_allowed_list: 0 +Mems_allowed: 1 +Mems_allowed_list: 0 +voluntary_ctxt_switches: 150 +nonvoluntary_ctxt_switches: 545 +.EE +.in +.IP +The fields are as follows: +.RS +.TP +.I Name +Command run by this process. +Strings longer than +.B TASK_COMM_LEN +(16) characters (including the terminating null byte) are silently truncated. +.TP +.I Umask +Process umask, expressed in octal with a leading zero; see +.BR umask (2). +(Since Linux 4.7.) +.TP +.I State +Current state of the process. +One of +"R (running)", +"S (sleeping)", +"D (disk sleep)", +"T (stopped)", +"t (tracing stop)", +"Z (zombie)", +or +"X (dead)". +.TP +.I Tgid +Thread group ID (i.e., Process ID). +.TP +.I Ngid +NUMA group ID (0 if none; since Linux 3.13). +.TP +.I Pid +Thread ID (see +.BR gettid (2)). +.TP +.I PPid +PID of parent process. +.TP +.I TracerPid +PID of process tracing this process (0 if not being traced). +.TP +.I Uid +.TQ +.I Gid +Real, effective, saved set, and filesystem UIDs (GIDs). +.TP +.I FDSize +Number of file descriptor slots currently allocated. +.TP +.I Groups +Supplementary group list. +.TP +.I NStgid +Thread group ID (i.e., PID) in each of the PID namespaces of which +.I pid +is a member. +The leftmost entry shows the value with respect to the PID namespace +of the process that mounted this procfs (or the root namespace +if mounted by the kernel), +followed by the value in successively nested inner namespaces. +.\" commit e4bc33245124db69b74a6d853ac76c2976f472d5 +(Since Linux 4.1.) +.TP +.I NSpid +Thread ID in each of the PID namespaces of which +.I pid +is a member. +The fields are ordered as for +.IR NStgid . +(Since Linux 4.1.) +.TP +.I NSpgid +Process group ID in each of the PID namespaces of which +.I pid +is a member. +The fields are ordered as for +.IR NStgid . +(Since Linux 4.1.) +.TP +.I NSsid +descendant namespace session ID hierarchy +Session ID in each of the PID namespaces of which +.I pid +is a member. +The fields are ordered as for +.IR NStgid . +(Since Linux 4.1.) +.TP +.I VmPeak +Peak virtual memory size. +.TP +.I VmSize +Virtual memory size. +.TP +.I VmLck +Locked memory size (see +.BR mlock (2)). +.TP +.I VmPin +Pinned memory size +.\" commit bc3e53f682d93df677dbd5006a404722b3adfe18 +(since Linux 3.2). +These are pages that can't be moved because something needs to +directly access physical memory. +.TP +.I VmHWM +Peak resident set size ("high water mark"). +This value is inaccurate; see +.IR /proc/ pid /statm +above. +.TP +.I VmRSS +Resident set size. +Note that the value here is the sum of +.IR RssAnon , +.IR RssFile , +and +.IR RssShmem . +This value is inaccurate; see +.IR /proc/ pid /statm +above. +.TP +.I RssAnon +Size of resident anonymous memory. +.\" commit bf9683d6990589390b5178dafe8fd06808869293 +(since Linux 4.5). +This value is inaccurate; see +.IR /proc/ pid /statm +above. +.TP +.I RssFile +Size of resident file mappings. +.\" commit bf9683d6990589390b5178dafe8fd06808869293 +(since Linux 4.5). +This value is inaccurate; see +.IR /proc/ pid /statm +above. +.TP +.I RssShmem +Size of resident shared memory (includes System V shared memory, +mappings from +.BR tmpfs (5), +and shared anonymous mappings). +.\" commit bf9683d6990589390b5178dafe8fd06808869293 +(since Linux 4.5). +.TP +.I VmData +.TQ +.I VmStk +.TQ +.I VmExe +Size of data, stack, and text segments. +This value is inaccurate; see +.IR /proc/ pid /statm +above. +.TP +.I VmLib +Shared library code size. +.TP +.I VmPTE +Page table entries size (since Linux 2.6.10). +.TP +.I VmPMD +.\" commit dc6c9a35b66b520cf67e05d8ca60ebecad3b0479 +Size of second-level page tables (added in Linux 4.0; removed in Linux 4.15). +.TP +.I VmSwap +.\" commit b084d4353ff99d824d3bc5a5c2c22c70b1fba722 +Swapped-out virtual memory size by anonymous private pages; +shmem swap usage is not included (since Linux 2.6.34). +This value is inaccurate; see +.IR /proc/ pid /statm +above. +.TP +.I HugetlbPages +Size of hugetlb memory portions +.\" commit 5d317b2b6536592a9b51fe65faed43d65ca9158e +(since Linux 4.4). +.TP +.I CoreDumping +Contains the value 1 if the process is currently dumping core, +and 0 if it is not +.\" commit c643401218be0f4ab3522e0c0a63016596d6e9ca +(since Linux 4.15). +This information can be used by a monitoring process to avoid killing +a process that is currently dumping core, +which could result in a corrupted core dump file. +.TP +.I Threads +Number of threads in process containing this thread. +.TP +.I SigQ +This field contains two slash-separated numbers that relate to +queued signals for the real user ID of this process. +The first of these is the number of currently queued +signals for this real user ID, and the second is the +resource limit on the number of queued signals for this process +(see the description of +.B RLIMIT_SIGPENDING +in +.BR getrlimit (2)). +.TP +.I SigPnd +.TQ +.I ShdPnd +Mask (expressed in hexadecimal) +of signals pending for thread and for process as a whole (see +.BR pthreads (7) +and +.BR signal (7)). +.TP +.I SigBlk +.TQ +.I SigIgn +.TQ +.I SigCgt +Masks (expressed in hexadecimal) +indicating signals being blocked, ignored, and caught (see +.BR signal (7)). +.TP +.I CapInh +.TQ +.I CapPrm +.TQ +.I CapEff +Masks (expressed in hexadecimal) +of capabilities enabled in inheritable, permitted, and effective sets +(see +.BR capabilities (7)). +.TP +.I CapBnd +Capability bounding set, expressed in hexadecimal +(since Linux 2.6.26, see +.BR capabilities (7)). +.TP +.I CapAmb +Ambient capability set, expressed in hexadecimal +(since Linux 4.3, see +.BR capabilities (7)). +.TP +.I NoNewPrivs +.\" commit af884cd4a5ae62fcf5e321fecf0ec1014730353d +Value of the +.I no_new_privs +bit +(since Linux 4.10, see +.BR prctl (2)). +.TP +.I Seccomp +.\" commit 2f4b3bf6b2318cfaa177ec5a802f4d8d6afbd816 +Seccomp mode of the process +(since Linux 3.8, see +.BR seccomp (2)). +0 means +.BR SECCOMP_MODE_DISABLED ; +1 means +.BR SECCOMP_MODE_STRICT ; +2 means +.BR SECCOMP_MODE_FILTER . +This field is provided only if the kernel was built with the +.B CONFIG_SECCOMP +kernel configuration option enabled. +.TP +.I Seccomp_filters +.\" commit c818c03b661cd769e035e41673d5543ba2ebda64 +Number of seccomp filters attached to the process +(since Linux 5.9, see +.BR seccomp (2)). +.TP +.I Speculation_Store_Bypass +.\" commit fae1fa0fc6cca8beee3ab8ed71d54f9a78fa3f64 +Speculation flaw mitigation state +(since Linux 4.17, see +.BR prctl (2)). +.TP +.I Cpus_allowed +Hexadecimal mask of CPUs on which this process may run +(since Linux 2.6.24, see +.BR cpuset (7)). +.TP +.I Cpus_allowed_list +Same as previous, but in "list format" +(since Linux 2.6.26, see +.BR cpuset (7)). +.TP +.I Mems_allowed +Mask of memory nodes allowed to this process +(since Linux 2.6.24, see +.BR cpuset (7)). +.TP +.I Mems_allowed_list +Same as previous, but in "list format" +(since Linux 2.6.26, see +.BR cpuset (7)). +.TP +.I voluntary_ctxt_switches +.TQ +.I nonvoluntary_ctxt_switches +Number of voluntary and involuntary context switches (since Linux 2.6.23). +.RE +.SH SEE ALSO +.BR proc (5) |