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 verbose descriptions explaining the output.

EXIT

syscallbysysc.d will sample until Ctrl-C is hit.

AUTHOR

Brendan Gregg [Sydney, Australia]