CVS commit: src

["Michael van Elst" <mlelstv%netbsd.org@localhost>]

Module Name:    src
Committed By:   mlelstv
Date:           Sun Mar  5 23:07:12 UTC 2017

Modified Files:
        src/share/man/man9: disk.9
        src/sys/arch/xen/xen: xbd_xenbus.c
        src/sys/dev: ccd.c dksubr.c
        src/sys/dev/ata: wd.c
        src/sys/dev/dkwedge: dk.c
        src/sys/kern: subr_disk.c subr_iostat.c
        src/sys/sys: disk.h iostat.h
        src/usr.bin/vmstat: drvstats.c drvstats.h
        src/usr.sbin/iostat: iostat.8 iostat.c

Log Message:
Enhance disk metrics by calculating a weighted sum that is incremented
by the number of concurrent I/O requests. Also introduce a new disk_wait()
function to measure requests waiting in a bufq.
iostat -y now reports data about waiting and active requests.

So far only drivers using dksubr and dk, ccd, wd and xbd collect data about
waiting requests.


To generate a diff of this commit:
cvs rdiff -u -r1.43 -r1.44 src/share/man/man9/disk.9
cvs rdiff -u -r1.75 -r1.76 src/sys/arch/xen/xen/xbd_xenbus.c
cvs rdiff -u -r1.168 -r1.169 src/sys/dev/ccd.c
cvs rdiff -u -r1.95 -r1.96 src/sys/dev/dksubr.c
cvs rdiff -u -r1.427 -r1.428 src/sys/dev/ata/wd.c
cvs rdiff -u -r1.95 -r1.96 src/sys/dev/dkwedge/dk.c
cvs rdiff -u -r1.117 -r1.118 src/sys/kern/subr_disk.c
cvs rdiff -u -r1.21 -r1.22 src/sys/kern/subr_iostat.c
cvs rdiff -u -r1.69 -r1.70 src/sys/sys/disk.h
cvs rdiff -u -r1.10 -r1.11 src/sys/sys/iostat.h
cvs rdiff -u -r1.9 -r1.10 src/usr.bin/vmstat/drvstats.c
cvs rdiff -u -r1.3 -r1.4 src/usr.bin/vmstat/drvstats.h
cvs rdiff -u -r1.24 -r1.25 src/usr.sbin/iostat/iostat.8
cvs rdiff -u -r1.63 -r1.64 src/usr.sbin/iostat/iostat.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.