iofile.d(1m) USER COMMANDS iofile.d(1m)
iofile.d - I/O wait time by file and process. Uses DTrace.
This prints the total I/O wait times for each filename by process. This
can help determine why an application is performing poorly by identifying
which file they are waiting on, and the total times. 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
TIME total wait time for disk events, us
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.
iofile.d will sample until Ctrl-C is hit.
version 0.70 July 24, 2005 iofile.d(1m)