1 .TH fddist 1m "$Date:: 2007-08-05 #$" "USER COMMANDS"
3 fddist \- file descriptor usage distributions. Uses DTrace.
7 This prints distributions for read and write events by file descriptor,
8 by process. This can be used to determine which file descriptor a
9 process is doing the most I/O with.
11 Since this uses DTrace, only the root user or users with the
12 dtrace_kernel privilege can run this command.
16 stable - needs the syscall provider.
27 Sample both read and write activity,
51 /usr/demo/dtrace/lquantize.d
54 DTrace Guide "Aggregations" chapter (docs.sun.com)
56 See the DTraceToolkit for further documentation under the
57 Docs directory. The DTraceToolkit docs may include full worked
58 examples with verbose descriptions explaining the output.
60 fddist will sample until Ctrl\-C is hit.