lastwords(1m) [osx man page]

lastwords(1m)							   USER COMMANDS						     lastwords(1m)

NAME

       lastwords - print syscalls before exit. Uses DTrace.

SYNOPSIS

       lastwords command

DESCRIPTION

       This  prints  the  last few system calls for processes matching the given name, when they exit. This makes use of a ring buffer so that the
       impact on the system is minimised.

       Since this uses DTrace, only users with root privileges can run this command.

EXAMPLES

       Catch last few syscalls for dying netscape processes,
	      # lastwords netscape

FIELDS

       TIME   time of syscall return, ns

       PID    process ID

       EXEC   process name (execname)

       SYSCALL
	      system call

       RETURN return value for the system call

       ERR    errno for the system call

BASED ON

       /usr/demo/dtrace/ring.d

DOCUMENTATION

       DTrace Guide "Buffers and Buffering" chapter (docs.sun.com)

       See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
       bose descriptions explaining the output.

EXIT

       lastwords will sample until a command with that name exits.

SEE ALSO

       dtruss(1M), dtrace(1M)

version 0.70							   Jun 08, 2005 						     lastwords(1m)

Check Out this Related Man Page

fddist(1m)							   USER COMMANDS							fddist(1m)

NAME

       fddist - file descriptor usage distributions. Uses DTrace.

SYNOPSIS

       fddist [-r|-w]

DESCRIPTION

       This  prints  distributions for read and write events by file descriptor, by process. This can be used to determine which file descriptor a
       process is doing the most I/O with.

       Since this uses DTrace, only users with root privileges can run this command.

OPTIONS

       -r     reads only

       -w     writes only

EXAMPLES

       Sample both read and write activity,
	      # fddist

       Sample reads only,
	      # fddist -r

FIELDS

       EXEC   process name

       PID    process ID

       value  file descriptor

       count  number of events

BASED ON

       /usr/demo/dtrace/lquantize.d

DOCUMENTATION

       DTrace Guide "Aggregations" chapter (docs.sun.com)

       See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
       bose descriptions explaining the output.

EXIT

       fddist will sample until Ctrl-C is hit.

SEE ALSO

       dtrace(1M)

version 0.70							   Jun 08, 2005 							fddist(1m)

Linux and UNIX Man Pages

lastwords(1m) [osx man page]

Check Out this Related Man Page