syscallbysysc.d(1m)

syscallbysysc.d1m

Syscalls by syscall. uses dtrace.

Usage

syscallbysysc.d

Overview

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.

Releases

115 releases since Mac OS X 10.5; the text changed 1 time.

  1. 10.5–10.5.8
  2. 10.6–26.5

Author

Brendan Gregg [Sydney, Australia]

From dtrace 413 in macOS 26.5. Parsed by carta from the page's man source.