Poul-Henning Kamp 7194d335cf Run a revision of the devstat interface: ... Kernel: Change statistics to use the *uptime() timescale (ie: relative to boottime) rather than the UTC aligned timescale. This makes the device statistics code oblivious to clock steps. Change timestamps to bintime format, they are cheaper. Remove the "busy_count", and replace it with two counter fields: "start_count" and "end_count", which are updated in the down and up paths respectively. This removes the locking constraint on devstat. Add a timestamp argument to devstat_start_transaction(), this will normally be a timestamp set by the *_bio() function in bp->bio_t0. Use this field to calculate duration of I/O operations. Add two timestamp arguments to devstat_end_transaction(), one is the current time, a NULL pointer means "take timestamp yourself", the other is the timestamp of when this transaction started (see above). Change calculation of busy_time to operate on "the salami principle": Only when we are idle, which we can determine by the start+end counts being identical, do we update the "busy_from" field in the down path. In the up path we accumulate the timeslice in busy_time and update busy_from. Change the byte_* and num_* fields into two arrays: bytes[] and operations[]. Userland: Change the misleading "busy_time" name to be called "snap_time" and make the time long double since that is what most users need anyway, fill it using clock_gettime(CLOCK_MONOTONIC) to put it on the same timescale as the kernel fields. Change devstat_compute_etime() to operate on struct bintime. Remove the version 2 legacy interface: the change to bintime makes compatibility far too expensive. Fix a bug in systat's "vm" page where boot relative busy times would be bogus. Bump __FreeBSD_version to 500107 Review & Collaboration by: ken		2003-03-15 21:59:06 +00:00
..
cmds.c	When we close a display, mark it as not-initialized so that we will	2003-01-04 21:58:25 +00:00
cmdtab.c	Add "ifstat" display:	2003-01-04 22:07:24 +00:00
convtbl.c	Add "ifstat" display:	2003-01-04 22:07:24 +00:00
convtbl.h	Add "ifstat" display:	2003-01-04 22:07:24 +00:00
devs.c	Add #include <sys/resource.h>	2003-02-16 15:46:25 +00:00
devs.h
extern.h	Add "ifstat" display:	2003-01-04 22:07:24 +00:00
fetch.c
icmp.c
ifcmds.c	Add "ifstat" display:	2003-01-04 22:07:24 +00:00
ifstat.c	Add "ifstat" display:	2003-01-04 22:07:24 +00:00
iostat.c	Run a revision of the devstat interface:	2003-03-15 21:59:06 +00:00
ip.c
keyboard.c
main.c	unifdef __STDC__	2002-03-23 23:37:07 +00:00
Makefile	Add "ifstat" display:	2003-01-04 22:07:24 +00:00
mbufs.c
mode.c
mode.h
netcmds.c
netstat.c	Widen struct sockbuf's sb_timeo member to int from short. With	2002-07-24 03:02:43 +00:00
pigs.c	Remove #include <sys/dkstat.h>	2003-02-16 14:13:23 +00:00
swap.c	Back out rev 1.20; getbsize(3)'s original interface has been restored.	2002-12-30 18:14:43 +00:00
systat.1	mdoc(7) police: Scheduled sweep.	2003-02-24 22:53:26 +00:00
systat.h
tcp.c
vmstat.c	Run a revision of the devstat interface:	2003-03-15 21:59:06 +00:00