iofileb.d(1m) USER COMMANDS iofileb.d(1m)
iofileb.d - I/O bytes by file and process. Uses DTrace.
This prints a summary of requested disk activity by pathname, providing
totals of the I/O events in bytes. It is a companion to the iofile.d
script - which prints in terms of I/O wait time, not bytes. I/O wait
time is a better metric for understanding performance issues. Both disk
and NFS I/O are measured.
Since this uses DTrace, only users with root privileges can run this
Sample until Ctrl-C is hit then print report,
PID process ID
CMD process name
KB kilobytes of disk I/O
FILE file pathname
See the DTraceToolkit for further documentation under the Docs directory.
The DTraceToolkit docs may include full worked examples with verbose
descriptions explaining the output.
iofileb.d will sample until Ctrl-C is hit.
iofile.d(1M), iosnoop(1M), dtrace(1M)
version 1.00 February 20, 2006 iofileb.d(1m)