42 lines
1.2 KiB
Plaintext
42 lines
1.2 KiB
Plaintext
|
.TH rfileio.d 1m "$Date:: 2007-08-05 #$" "USER COMMANDS"
|
||
|
.SH NAME
|
||
|
rfileio.d \- read file I/O stats, with cache miss rate. Uses DTrace.
|
||
|
.SH SYNOPSIS
|
||
|
.B rfileio.d
|
||
|
.SH DESCRIPTION
|
||
|
This script provides statistics on the number of reads and the bytes
|
||
|
read from filesystems (logical), and the number of bytes read from
|
||
|
disk (physical). A summary is printed every five seconds by file.
|
||
|
|
||
|
A total miss-rate is also provided for the file system cache.
|
||
|
|
||
|
Since this uses DTrace, only the root user or users with the
|
||
|
dtrace_kernel privilege can run this command.
|
||
|
.SH OS
|
||
|
Solaris
|
||
|
.SH STABILITY
|
||
|
unstable - this script uses fbt provider probes which may change for
|
||
|
future updates of the OS, invalidating this script. Please read
|
||
|
Docs/Notes/ALLfbt_notes.txt for further details about these fbt scripts.
|
||
|
.SH EXAMPLES
|
||
|
.TP
|
||
|
Print a summary of activity every five seconds.
|
||
|
#
|
||
|
.B rfileio.d
|
||
|
.PP
|
||
|
.SH IDEA
|
||
|
Richard McDougall, Solaris Internals 2nd Ed, FS Chapter.
|
||
|
.PP
|
||
|
.SH 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.
|
||
|
.SH EXIT
|
||
|
rfileio.d will run until Ctrl\-C is hit.
|
||
|
.SH AUTHOR
|
||
|
Brendan Gregg
|
||
|
[Sydney, Australia]
|
||
|
.SH SEE ALSO
|
||
|
rfsio.d(1M), dtrace(1M)
|
||
|
|