topsyscall(1m) USER COMMANDS topsyscall(1m)

NAME
       topsyscall - top syscalls by syscall name. Uses DTrace.

SYNOPSIS
       ttooppssyyssccaallll [-Cs] [interval [count]]

DESCRIPTION
       This  program  continually prints a report of the top system calls, and
       refreshes the display every 1 second or as  specified  at  the  command
       line.

       Since  this  uses  DTrace,  only  the  root  user  or  users  with  the
       dtracekernel privilege can run this command.

OOPPTTIIOONNSS
       -C     don't clear the screen

       -s     print per second values


EEXXAAMMPPLLEESS
       Default output, 1 second updates,
              # ttooppssyyssccaallll

       Print every 5 seconds,
              # ttooppssyyssccaallll 5

       Print a scrolling output,
              # ttooppssyyssccaallll -C


FFIIEELLDDSS
       load avg
              load averages, see uptime(1)

       syscalls
              total syscalls in this interval

       syscalls/s
              syscalls per second

       SYSCALL
              system call name

       COUNT  total syscalls in this interval

       COUNT/s
              syscalls per second


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

EEXXIITT
       topsyscall will run until Ctrl-C is hit, or the specified  interval  is
       reached.

AUTHOR       Brendan Gregg [Sydney, Australia]

SEE ALSO
       dtrace(1M), prstat(1M)



version 0.90                     Jun 13, 2005                   topsyscall(1m)