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-.TH fspaging.d 1m "$Date:: 2007-08-05 #$" "USER COMMANDS"
-.SH NAME
-fspaging.d \- file system read/write and paging tracing. Uses DTrace.
-.SH SYNOPSIS
-.B fspaging.d
-.SH DESCRIPTION
-This traces file related activity: system call reads and writes,
-vnode logical read and writes (fop), vnode putpage and getpage activity,
-and disk I/O. It can be used to examine the behaviour of each I/O
-layer, from the syscall interface to what the disk is doing. Behaviour
-such as read-ahead, and max I/O size breakup can be observed.
-
-This is a verbose version of fsrw.d, as this also traces paging activity.
-
-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
-Trace file system read/write/paging events,
-#
-.B fspaging.d
-.PP
-.SH FIELDS
-.TP
-Event
-traced event (see EVENTS below)
-.TP
-Device
-device, for disk I/O
-.TP
-RW
-either Read or Write
-.TP
-Size
-size of I/O in bytes
-.TP
-Offset
-offset of I/O in kilobytes
-.TP
-Path
-path to file on disk
-.PP
-.SH EVENTS
-.TP
-sc-read
-system call read
-.TP
-sc-write
-system call write
-.TP
-fop_read
-logical read
-.TP
-fop_write
-logical write
-.TP
-fop_getpage
-logical get page
-.TP
-fop_putpage
-logical put page
-.TP
-disk_io
-physical disk I/O
-.TP
-disk_ra
-physical disk I/O, read ahead
-.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
-fspaging.d will trace until Ctrl\-C is hit.
-.SH AUTHOR
-Brendan Gregg
-[Sydney, Australia]
-.SH SEE ALSO
-fsrw.d(1M), dtrace(1M)
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