File: [local] / src / usr.bin / systat / iostat.c (download)
Revision 1.26, Thu Jun 29 21:17:27 2006 UTC (17 years, 11 months ago) by dlg
Branch: MAIN
CVS Tags: OPENBSD_4_0_BASE, OPENBSD_4_0 Changes since 1.25: +12 -13 lines
change bytes to kilobytes so i dont have to think about where megabytes
start.
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/* $OpenBSD: iostat.c,v 1.26 2006/06/29 21:17:27 dlg Exp $ */
/* $NetBSD: iostat.c,v 1.5 1996/05/10 23:16:35 thorpej Exp $ */
/*
* Copyright (c) 1980, 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
#if 0
static char sccsid[] = "@(#)iostat.c 8.1 (Berkeley) 6/6/93";
#endif
static char rcsid[] = "$OpenBSD: iostat.c,v 1.26 2006/06/29 21:17:27 dlg Exp $";
#endif /* not lint */
#include <sys/param.h>
#include <sys/dkstat.h>
#include <sys/buf.h>
#include <sys/time.h>
#include <string.h>
#include <stdlib.h>
#include <paths.h>
#include "systat.h"
#include "extern.h"
#include "dkstats.h"
extern struct _disk cur, last;
static double etime;
static void numlabels(void);
#define ATIME(x,y) ((double)x[y].tv_sec + \
((double)x[y].tv_usec / (double)1000000))
#define NFMT "%-8.8s %14.0f %14.0f %10.0f %10.0f %10.1f"
#define SFMT "%-8.8s %14s %14s %10s %10s %10s"
WINDOW *
openiostat(void)
{
return (subwin(stdscr, LINES-1-5, 0, 5, 0));
}
void
closeiostat(WINDOW *w)
{
if (w == NULL)
return;
wclear(w);
wrefresh(w);
delwin(w);
}
int
initiostat(void)
{
dkinit(1);
dkreadstats();
return (1);
}
void
fetchiostat(void)
{
if (cur.dk_ndrive == 0)
return;
dkreadstats();
}
void
labeliostat(void)
{
mvwprintw(wnd, 1, 0, SFMT, "Device", "rKBytes", "wKBytes", "rtps",
"wtps", "msec");
}
void
showiostat(void)
{
int i;
dkswap();
etime = 0.0;
for (i = 0; i < CPUSTATES; i++) {
etime += cur.cp_time[i];
}
if (etime == 0.0)
etime = 1.0;
etime /= (float) hz;
if (last.dk_ndrive != cur.dk_ndrive)
labeliostat();
if (cur.dk_ndrive == 0)
return;
numlabels();
}
void
numlabels(void)
{
double rsum, wsum, rtsum, wtsum, mssum;
int row, dn;
row = 2;
wmove(wnd, 0, 0);
wclrtoeol(wnd);
if (cur.dk_ndrive == 0) {
mvwaddstr(wnd, row, 0, "No drives attached.");
return;
}
rsum = wsum = rtsum = wtsum = mssum = 0.0;
for (dn = 0; dn < cur.dk_ndrive; dn++) {
rsum += cur.dk_rbytes[dn] / etime;
wsum += cur.dk_wbytes[dn] / etime;
rtsum += cur.dk_rxfer[dn] / etime;
wtsum += cur.dk_wxfer[dn] / etime;
mssum += ATIME(cur.dk_time, dn) / etime;
mvwprintw(wnd, row++, 0, NFMT,
cur.dk_name[dn],
cur.dk_rbytes[dn] / 1024.0 / etime,
cur.dk_wbytes[dn] / 1024.0 / etime,
cur.dk_rxfer[dn] / etime,
cur.dk_wxfer[dn] / etime,
ATIME(cur.dk_time, dn) / etime);
}
mvwprintw(wnd, row++, 0, NFMT,
"Totals", rsum / 1024.0, wsum / 1024.0, rtsum, wtsum, mssum);
}
int
cmdiostat(char *cmd, char *args)
{
wclear(wnd);
labeliostat();
refresh();
return (1);
}