| PROCSTAT(1) | FreeBSD General Commands Manual | PROCSTAT(1) |
NAME
procstat — get detailed process informationSYNOPSIS
| procstat | [ -CHhn][ -w interval][ -b | -c | -e | -f | -i | -j | -k | -l | -r | -s | -t | -v | -x][ -a | pid | core ...] |
DESCRIPTION
The procstat utility displays detailed information about the processes identified by the pid arguments, or if the -a flag is used, all processes. It can also display information extracted from a process core file, if the core file is specified as the argument.By default, basic process statistics are printed; one of the following options may be specified in order to select more detailed process information for printing:
- -b
- Display binary information for the process.
- -c
- Display command line arguments for the process.
- -e
- Display environment variables for the process.
- -f
- Display file descriptor information for the process.
- -i
- Display signal pending and disposition information for the process.
- -j
- Display signal pending and blocked information for the process's threads.
- -k
- Display the stacks of kernel threads in the process, excluding stacks of threads currently running on a CPU and threads with stacks swapped to disk. If the flag is repeated, function offsets as well as function names are printed.
- -l
- Display resource limits for the process.
- -r
- Display resource usage information for the process.
- -s
- Display security credential information for the process.
- -t
- Display thread information for the process.
- -v
- Display virtual memory mappings for the process.
- -x
- Display ELF auxiliary vector for the process.
All options generate output in the format of a table, the first field of which is the process ID to which the row of information corresponds. The -h flag may be used to suppress table headers.
The -w flag may be used to specify a wait interval at which to repeat the printing of the requested process information. If the -w flag is not specified, the output will not repeat.
The -C flag requests the printing of additional capability information in the file descriptor view.
The -H flag may be used to request per-thread statistics rather than per-process statistics for some options. For those options, the second field in the table will list the thread ID to which the row of information corresponds.
Some information, such as VM and file descriptor information, is available only to the owner of a process or the superuser.
Binary Information
Display the process ID, command, and path to the process binary:
- PID
- process ID
- COMM
- command
- OSREL
- osreldate for process binary
- PATH
- path to process binary (if available)
Command Line Arguments
Display the process ID, command, and command line arguments:
- PID
- process ID
- COMM
- command
- ARGS
- command line arguments (if available)
Environment Variables
Display the process ID, command, and environment variables:
- PID
- process ID
- COMM
- command
- ENVIRONMENT
- environment variables (if available)
File Descriptors
Display detailed information about each file descriptor referenced by a process, including the process ID, command, file descriptor number, and per-file descriptor object information, such as object type and file system path. By default, the following information will be printed:
- PID
- process ID
- COMM
- command
- FD
- file descriptor number or cwd/root/jail
- T
- file descriptor type
- V
- vnode type
- FLAGS
- file descriptor flags
- REF
- file descriptor reference count
- OFFSET
- file descriptor offset
- PRO
- network protocol
- NAME
- file path or socket addresses (if available)
The following file descriptor types may be displayed:
- c
- crypto
- e
- POSIX semaphore
- f
- fifo
- h
- shared memory
- k
- kqueue
- m
- message queue
- p
- pipe
- s
- socket
- t
- pseudo-terminal master
- v
- vnode
The following vnode types may be displayed:
- -
- not a vnode
- b
- block device
- c
- character device
- d
- directory
- f
- fifo
- l
- symbolic link
- r
- regular file
- s
- socket
- x
- revoked device
The following file descriptor flags may be displayed:
- r
- read
- w
- write
- a
- append
- s
- async
- f
- fsync
- n
- non-blocking
- d
- direct I/O
- l
- lock held
If the -C flag is specified, the vnode type, reference count, and offset fields will be omitted, and a new capabilities field will be included listing capabilities, as described in cap_rights_limit(2), present for each capability descriptor.
Signal Disposition Information
Display signal pending and disposition for a process:
- PID
- process ID
- COMM
- command
- SIG
- signal name
- FLAGS
-
process signal disposition details, three symbols
- P
- if signal is pending in the global process queue, - otherwise
- I
- if signal delivery disposition is SIGIGN, - otherwise
- C
- if signal delivery is to catch it, - otherwise
If -n switch is given, the signal numbers are shown instead of signal names.
Thread Signal Information
Display signal pending and blocked for a process's threads:
- PID
- process ID
- TID
- thread ID
- COMM
- command
- SIG
- signal name
- FLAGS
-
thread signal delivery status, two symbols
- P
- if signal is pending for the thread, - otherwise
- B
- if signal is blocked in the thread signal mask, - if not blocked
The -n switch has the same effect as for the -i switch: the signal numbers are shown instead of signal names.
Kernel Thread Stacks
Display kernel thread stacks for a process, allowing further interpretation of thread wait channels. If the -k flag is repeated, function offsets, not just function names, are printed.This feature requires options STACK or options DDB to be compiled into the kernel.
- PID
- process ID
- TID
- thread ID
- COMM
- command
- TDNAME
- thread name
- KSTACK
- kernel thread call stack
Resource Limits
Display resource limits for a process:
- PID
- process ID
- COMM
- command
- RLIMIT
- resource limit name
- SOFT
- soft limit
- HARD
- hard limit
Resource Usage
Display resource usage for a process. If the -H flag is specified, resource usage for individual threads is displayed instead.
- PID
- process ID
- TID
- thread ID (if -H is specified)
- COMM
- command
- RESOURCE
- resource name
- VALUE
- current usage
Security Credentials
Display process credential information:
- PID
- process ID
- COMM
- command
- EUID
- effective user ID
- RUID
- real user ID
- SVUID
- saved user ID
- EGID
- effective group ID
- RGID
- real group ID
- SVGID
- saved group ID
- UMASK
- file creation mode mask
- FLAGS
- credential flags
- GROUPS
- group set
The following credential flags may be displayed:
- C
- capability mode
Thread Information
Display per-thread information, including process ID, per-thread ID, name, CPU, and execution state:
- PID
- process ID
- TID
- thread ID
- COMM
- command
- TDNAME
- thread name
- CPU
- current or most recent CPU run on
- PRI
- thread priority
- STATE
- thread state
- WCHAN
- thread wait channel
Virtual Memory Mappings
Display process virtual memory mappings, including addresses, mapping meta-data, and mapped object information:
- PID
- process ID
- START
- starting address of mapping
- END
- ending address of mapping
- PRT
- protection flags
- RES
- resident pages
- PRES
- private resident pages
- REF
- reference count
- SHD
- shadow page count
- FL
- mapping flags
- TP
- VM object type
The following protection flags may be displayed:
- r
- read
- w
- write
- x
- execute
The following VM object types may be displayed:
- --
- none
- dd
- dead
- df
- default
- dv
- device
- md
- device with managed pages (GEM/TTM)
- ph
- physical
- sg
- scatter/gather
- sw
- swap
- vn
- vnode
The following mapping flags may be displayed:
- C
- copy-on-write
- N
- needs copy
- S
- one or more superpage mappings are used
- D
- grows down (top-down stack)
- U
- grows up (bottom-up stack)
ELF Auxiliary Vector
Display ELF auxiliary vector values:
- PID
- process ID
- COMM
- command
- AUXV
- auxiliary vector name
- VALUE
- auxiliary vector value
EXIT STATUS
The procstat utility exits 0 on success, and >0 if an error occurs.AUTHORS
BUGS
Some field values may include spaces, which limits the extent to which the output of procstat may be mechanically parsed.The display of open file or memory mapping pathnames is implemented using the kernel's name cache. If a file system does not use the name cache, or the path to a file is not in the cache, a path will not be displayed.
procstat currently supports extracting data only from a live kernel, and not from kernel crash dumps.
| May 16, 2014 | FreeBSD |