NAME

topsyscall - top syscalls by syscall name. Uses DTrace.

SYNOPSIS

topsyscall [-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 users with root privileges can run this command.

OPTIONS

-C: don't clear the screen
-s: print per second values

EXAMPLES

Default output, 1 second updates,: # topsyscall
Print every 5 seconds,: # topsyscall 5
Print a scrolling output,: # topsyscall -C

FIELDS

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

DOCUMENTATION

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

EXIT

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

AUTHOR

Brendan Gregg [Sydney, Australia]