topsyscall(1m) USER COMMANDS topsyscall(1m)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 ver-
bose descriptions explaining the output.
EXIT
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)
Check Out this Related Man Page
syscallbysysc.d(1m) USER COMMANDS syscallbysysc.d(1m)NAME
syscallbysysc.d - syscalls by syscall. Uses DTrace.
SYNOPSIS
syscallbysysc.d
DESCRIPTION
syscallbysysc.d is a DTrace OneLiner to a report of the number of each type of system call made.
This is useful to identify which system call is the most common.
Docs/oneliners.txt and Docs/Examples/oneliners_examples.txt in the DTraceToolkit contain this as a oneliner that can be cut-n-paste to run.
Since this uses DTrace, only users with root privileges can run this command.
EXAMPLES
This samples until Ctrl-C is hit.
# syscallbysysc.d
FIELDS
first field
This is the system call type. Most have man pages in section 2.
second field
This is the count, the number of occurrances for this system call.
DOCUMENTATION
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
syscallbysysc.d will sample until Ctrl-C is hit.
AUTHOR
Brendan Gregg [Sydney, Australia]
SEE ALSO procsystime(1M), dtrace(1M), truss(1)version 1.00 May 15, 2005 syscallbysysc.d(1m)
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