NAME

pstat − print system facts

SYNOPSIS

pstat [ −aixptuf ] [ suboptions ] [ file ]

DESCRIPTION

Pstat interprets the contents of certain system tables.  If file is given, the tables are sought there, otherwise in /dev/mem.  The required namelist is taken from /unix.  Options are

−a Under −p, describe all process slots rather than just active ones. 

−i Print the inode table with the these headings:

LOCThe core location of this table entry. 

FLAGSMiscellaneous state variables encoded thus:

Llocked

Uupdate time filsys(5)) must be corrected

Aaccess time must be corrected

Mfile system is mounted here

Wwanted by another process (L flag is on)

Tcontains a text file

Cchanged time must be corrected

CNTNumber of open file table entries for this inode. 

DEVMajor and minor device number of file system in which this inode resides. 

INOI-number within the device. 

MODEMode bits, see chmod(2).

NLKNumber of links to this inode. 

UIDUser ID of owner. 

SIZ/DEVNumber of bytes in an ordinary file, or major and minor device of special file. 

−x Print the text table with these headings:

LOCThe core location of this table entry. 

FLAGSMiscellaneous state variables encoded thus:

Tptrace(2) in effect

Wtext not yet written on swap device

Lloading in progress

Klocked

wwanted (L flag is on)

DADDRDisk address in swap, measured in multiples of 512 bytes. 

CADDRCore address, measured in multiples of 64 bytes. 

SIZESize of text segment, measured in multiples of 64 bytes. 

IPTRCore location of corresponding inode. 

CNTNumber of processes using this text segment. 

CCNTNumber of processes in core using this text segment. 

−p Print process table for active processes with these headings:

LOCThe core location of this table entry. 

SRun state encoded thus:

0no process

1waiting for some event

3runnable

4being created

5being terminated

6stopped under trace

FMiscellaneous state variables, or-ed together:

01loaded

02the scheduler process

04locked

010swapped out

020traced

040used in tracing

0100locked in by lock(2).

PRIScheduling priority, see nice(2).

SIGNALSignals received (signals 1-16 coded in bits 0-15),

UIDReal user ID. 

TIMTime resident in seconds; times over 127 coded as 127. 

CPUWeighted integral of CPU time, for scheduler. 

NINice level, see nice(2).

PGRPProcess number of root of process group (the opener of the controlling terminal). 

PIDThe process ID number. 

PPIDThe process ID of parent process. 

ADDRIf in core, the physical address of the ‘u-area’ of the process measured in multiples of 64 bytes.  If swapped out, the position in the swap area measured in multiples of 512 bytes. 

SIZESize of process image in multiples of 64 bytes. 

WCHANWait channel number of a waiting process. 

LINKLink pointer in list of runnable processes. 

TEXTPIf text is pure, pointer to location of text table entry. 

CLKTCountdown for alarm(2) measured in seconds.

−t Print table for terminals (only DH11 and DL11 handled) with these headings:

RAWNumber of characters in raw input queue. 

CANNumber of characters in canonicalized input queue. 

OUTNumber of characters in putput queue. 

MODESee tty(4).

ADDRPhysical device address. 

DELNumber of delimiters (newlines) in canonicalized input queue. 

COLCalculated column position of terminal. 

STATEMiscellaneous state variables encoded thus:

Wwaiting for open to complete

Oopen

Shas special (output) start routine

Ccarrier is on

Bbusy doing output

Aprocess is awaiting output

Xopen for exclusive use

Hhangup on close

PGRPProcess group for which this is controlling terminal. 

−u print information about a user process; the next argument is its address as given by ps(1). The process must be in main memory, or the file used can be a core image and the address 0.

−f Print the open file table with these headings:

LOCThe core location of this table entry. 

FLGMiscellaneous state variables encoded thus:

Ropen for reading

Wopen for writing

Ppipe

CNTNumber of processes that know this open file. 

INOThe location of the inode table entry for this file. 

OFFSThe file offset, see lseek(2).

FILES

/unixnamelist
/dev/memdefault source of tables

SEE ALSO

ps(1), stat(2), filsys(5)
K. Thompson, UNIX Implementation

7th Edition