mirror of
https://github.com/Stichting-MINIX-Research-Foundation/netbsd.git
synced 2025-09-11 16:15:07 -04:00
50 lines
1.1 KiB
Plaintext
50 lines
1.1 KiB
Plaintext
.TH iofile.d 1m "$Date: 2015/09/30 22:01:09 $" "USER COMMANDS"
|
|
.SH NAME
|
|
iofile.d \- I/O wait time by file and process. Uses DTrace.
|
|
.SH SYNOPSIS
|
|
.B iofile.d
|
|
.SH DESCRIPTION
|
|
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 the root user or users with the
|
|
dtrace_kernel privilege can run this command.
|
|
.SH OS
|
|
Solaris
|
|
.SH STABILITY
|
|
stable - needs the io provider.
|
|
.SH EXAMPLES
|
|
.TP
|
|
Sample until Ctrl\-C is hit then print report,
|
|
#
|
|
.B iofile.d
|
|
.PP
|
|
.SH FIELDS
|
|
.TP
|
|
PID
|
|
process ID
|
|
.TP
|
|
CMD
|
|
process name
|
|
.TP
|
|
TIME
|
|
total wait time for disk events, us
|
|
.TP
|
|
FILE
|
|
file pathname
|
|
.PP
|
|
.SH BASED ON
|
|
/usr/demo/dtrace/iocpu.d
|
|
.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
|
|
iofile.d will sample until Ctrl\-C is hit.
|
|
.SH SEE ALSO
|
|
iosnoop(1M), dtrace(1M)
|
|
|