static void
dinfo(int dn, int lc, struct statinfo *now, struct statinfo *then)
{
long double transfers_per_second;
long double kb_per_transfer, mb_per_second;
long double elapsed_time, device_busy;
int di;
di = dev_select[dn].position;
if (then != NULL) {
/* Calculate relative to previous sample */
elapsed_time = now->snap_time - then->snap_time;
} else {
/* Calculate relative to device creation */
elapsed_time = now->snap_time - devstat_compute_etime(
&now->dinfo->devices[di].creation_time, NULL);
}
if (devstat_compute_statistics(&now->dinfo->devices[di], then ?
&then->dinfo->devices[di] : NULL, elapsed_time,
DSM_KB_PER_TRANSFER, &kb_per_transfer,
DSM_TRANSFERS_PER_SECOND, &transfers_per_second,
DSM_MB_PER_SECOND, &mb_per_second,
DSM_BUSY_PCT, &device_busy,
DSM_NONE) != 0)
errx(1, "%s", devstat_errbuf);
lc = DISKCOL + lc * 6;
putlongdouble(kb_per_transfer, DISKROW + 1, lc, 5, 2, 0);
putlongdouble(transfers_per_second, DISKROW + 2, lc, 5, 0, 0);
putlongdouble(mb_per_second, DISKROW + 3, lc, 5, 2, 0);
putlongdouble(device_busy, DISKROW + 4, lc, 5, 0, 0);
}
static void
putlongdoublez(long double f, int l, int lc, int w, int d, int nz)
{
char b[128];
if (f == 0.0) {
move(l, lc);
sprintf(b, "%*.*s", w, w, "");
addstr(b);
} else {
putlongdouble(f, l, lc, w, d, nz);
}
}
static void
dinfo(int dn, int lc, struct statinfo *now, struct statinfo *then)
{
long double kb_per_transfer;
long double transfers_per_secondr;
long double transfers_per_secondw;
long double mb_per_secondr;
long double mb_per_secondw;
long double elapsed_time, device_busy;
int di;
di = dev_select[dn].position;
elapsed_time = compute_etime(now->busy_time, then ?
then->busy_time :
now->dinfo->devices[di].dev_creation_time);
device_busy = compute_etime(now->dinfo->devices[di].busy_time, then ?
then->dinfo->devices[di].busy_time :
now->dinfo->devices[di].dev_creation_time);
if (compute_stats(
&now->dinfo->devices[di],
(then ? &then->dinfo->devices[di] : NULL),
elapsed_time,
NULL, NULL, NULL,
&kb_per_transfer,
NULL,
NULL,
NULL, NULL) != 0)
errx(1, "%s", devstat_errbuf);
if (compute_stats_read(
&now->dinfo->devices[di],
(then ? &then->dinfo->devices[di] : NULL),
elapsed_time,
NULL, NULL, NULL,
NULL,
&transfers_per_secondr,
&mb_per_secondr,
NULL, NULL) != 0)
errx(1, "%s", devstat_errbuf);
if (compute_stats_write(
&now->dinfo->devices[di],
(then ? &then->dinfo->devices[di] : NULL),
elapsed_time,
NULL, NULL, NULL,
NULL,
&transfers_per_secondw,
&mb_per_secondw,
NULL, NULL) != 0)
errx(1, "%s", devstat_errbuf);
if ((device_busy == 0) &&
(transfers_per_secondr > 5 || transfers_per_secondw > 5)) {
/* the device has been 100% busy, fake it because
* as long as the device is 100% busy the busy_time
* field in the devstat struct is not updated */
device_busy = elapsed_time;
}
if (device_busy > elapsed_time) {
/* this normally happens after one or more periods
* where the device has been 100% busy, correct it */
device_busy = elapsed_time;
}
lc = DISKCOL + lc * 6;
putlongdoublez(kb_per_transfer, DISKROW + 1, lc, 5, 2, 0);
putlongdoublez(transfers_per_secondr, DISKROW + 2, lc, 5, 0, 0);
putlongdoublez(mb_per_secondr, DISKROW + 3, lc, 5, 2, 0);
putlongdoublez(transfers_per_secondw, DISKROW + 4, lc, 5, 0, 0);
putlongdoublez(mb_per_secondw, DISKROW + 5, lc, 5, 2, 0);
putlongdouble(device_busy * 100 / elapsed_time,
DISKROW + 6, lc, 5, 0, 0);
}
