NAME

rwbypid.d - read/write calls by PID. Uses DTrace.

SYNOPSIS

rwbypid.d

DESCRIPTION

This script tracks the number of reads and writes at the syscall level by processes, printing the totals in a report. This matches reads and writes whether they succeed or not.

Since this uses DTrace, only users with root privileges can run this command.

EXAMPLES

This samples until Ctrl-C is hit.: # rwbypid.d

FIELDS

PID: process ID
CMD: process name
DIR: direction, Read or Write
COUNT: total calls

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

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

AUTHOR

Brendan Gregg [Sydney, Australia]