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Manual Pages  — PROCSTAT

NAME

procstat – get detailed process information

CONTENTS

SYNOPSIS


procstat [--libxo] [-CHhn] [-M core] [-N system] [-w interval] [-b | -c | -e | -f | -i | -j | -k | -l | -L | -r | -s | -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:
--libxo
  Generate output via libxo(3) in a selection of different human and machine readable formats. See xo_parse_args(3) for details on command line arguments.
-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.
-L
  Display LWP info for the process pertaining to it's signal driven exit.
-r
  Display resource usage information for the process.
-s
  Display security credential information for the process.
-S
  Display the cpuset information for the thread.
-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. The -H flag is implied for the -S mode.

Information for VM, file descriptor, and cpuset options is available only to the owner of a process or the superuser. A cpuset value displayed as -1 means that the information is either invalid or not available.

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 process descriptor
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.

The following network protocols may be displayed (grouped by address family):

AF_INET, AF_INET6

ICM IPPROTO_ICMP; see icmp(4).
IPD IPPROTO_DIVERT; see divert(4).
IP? unknown protocol.
RAW IPPROTO_RAW; see ip(4).
SCT IPPROTO_SCTP; see sctp(4).
TCP IPPROTO_TCP; see tcp(4).
UDP IPPROTO_UDP; see udp(4).

AF_LOCAL

UDD IPPROTO_UDP; see udp(4).
UDS IPPROTO_TCP; see tcp(4).
UD? unknown protocol.

? unknown address family.

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 SIG_IGN; - otherwise.
C if the signal will be caught; - 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
FLAG 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 utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

fstat(1), ps(1), sockstat(1), cap_enter(2), cap_rights_limit(2), libprocstat(3), libxo(3), signal(3), xo_parse_args(3), ddb(4), divert(4), icmp(4), ip(4), sctp(4), tcp(4), udp(4), stack(9)

AUTHORS

Robert N M Watson <Mt rwatson@FreeBSD.org>.
libxo(3) support was added by Allan Jude <Mt allanjude@FreeBSD.org>.

BUGS

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.


PROCSTAT (1) October 3, 2017

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