diskhits(1) USER COMMANDS diskhits(1)
NAME
diskhits - disk access by file offset. Uses DTrace.
SYNOPSIS
diskhits pathname
DESCRIPTION
This prints how a file was accessed, the locations on a distribution
plot. This is for the cache misses only - the file activity that
resulted in disk events.
Since this uses DTrace, only users with root privileges can run this
command.
EXAMPLES
Sample /var/adm/messages disk activity,
# diskhits /var/adm/messages
FIELDS
Location (KB)
the file offset of the disk activity, Kbytes
Size (KB)
size of the disk activity, Kbytes
Total RW
Total disk activity, reads + writes
BASED ON
/usr/demo/dtrace/applicat.d
DOCUMENTATION
DTrace Guide "io Provider" chapter (docs.sun.com)
See the DTraceToolkit for further documentation under the Docs direc-
tory. The DTraceToolkit docs may include full worked examples with ver-
bose descriptions explaining the output.
EXIT
diskhits will sample until Ctrl-C is hit.
SEE ALSO
dtrace(1M)
version 0.72 Apr 20, 2006 diskhits(1)
Mac OS X 10.6 - Generated Thu Sep 17 20:07:28 CDT 2009