/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <stdio.h>
#include <string.h>
#include <kstat.h>
#include <sys/inttypes.h>
#include <nsctl.h>
#include "dsstat.h"
#include "common.h"
#include "sdbc_stats.h"
#include "report.h"
extern short dflags;
/*
* Return the number of ticks delta between two hrtime_t
* values. Attempt to cater for various kinds of overflow
* in hrtime_t - no matter how improbable.
*/
uint64_t
hrtime_delta(hrtime_t old, hrtime_t new)
{
uint64_t del;
if ((new >= old) && (old >= 0L)) {
return (new - old);
} else {
/*
* We've overflowed the positive portion of an
* hrtime_t.
*/
if (new < 0L) {
/*
* The new value is negative. Handle the
* case where the old value is positive or
* negative.
*/
uint64_t n1;
uint64_t o1;
n1 = -new;
if (old > 0L) {
return (n1 - old);
} else {
o1 = -old;
del = n1 - o1;
return (del);
}
} else {
/*
* Either we've just gone from being negative
* to positive *or* the last entry was positive
* and the new entry is also positive but *less*
* than the old entry. This implies we waited
* quite a few days on a very fast system between
* iostat displays.
*/
if (old < 0L) {
uint64_t o2;
o2 = -old;
del = UINT64_MAX - o2;
} else {
del = UINT64_MAX - old;
}
del += new;
return (del);
}
}
}
/*
* Take the difference of an unsigned 32
* bit int attempting to cater for
* overflow.
*/
uint32_t
u32_delta(uint32_t old, uint32_t new)
{
if (new >= old)
return (new - old);
else
return ((UINT32_MAX - old) + new + 1);
}
/*
* Take the difference of an unsigned 64
* bit int attempting to cater for
* overflow.
*/
uint64_t
u64_delta(uint64_t old, uint64_t new)
{
if (new >= old)
return (new - old);
else
return ((UINT64_MAX - old) + new + 1);
}
/*
* io_report() - diffs and reports data contained in
* kstat_io_t structures.
*
* parameters
* kstat_io_t *cur - pointer to current data
*
* kstat_io_t *pre - pointer to data as it was
* at the beginning of an interval.
*/
void
io_report(kstat_t *cur_kstat, kstat_t *pre_kstat, sdbcstat_t *sdbcstat)
{
sdbcvals_t vals;
double rd_cnt, wr_cnt;
double rd_kb, wr_kb, hr_etime;
double rtm, tps, avs, etime;
kstat_io_t *cur = cur_kstat->ks_data;
kstat_io_t *pre = pre_kstat->ks_data;
if (sdbcstat &&
sdbc_getvalues(sdbcstat, &vals, (SDBC_KBYTES | SDBC_INTAVG)))
return;
/* Time */
hr_etime = hrtime_delta(pre_kstat->ks_snaptime, cur_kstat->ks_snaptime);
etime = hr_etime / (double)NANOSEC;
/* Read count */
rd_cnt = (double)u32_delta(pre->reads, cur->reads);
if (rd_cnt) rd_cnt /= etime;
/* Bytes read */
rd_kb = (double)u64_delta(pre->nread, cur->nread) / KILOBYTE;
if (rd_kb) rd_kb /= etime;
/* Write count */
wr_cnt = (double)u32_delta(pre->writes, cur->writes);
if (wr_cnt) wr_cnt /= etime;
/* Bytes written */
wr_kb = (double)u64_delta(pre->nwritten, cur->nwritten) / KILOBYTE;
if (wr_kb) wr_kb /= etime;
/* Calculate service times */
avs = (double)hrtime_delta(pre->rlentime, cur->rlentime) / hr_etime;
tps = (double)rd_cnt + wr_cnt;
if (tps > 0)
rtm = (1000 / tps) * avs;
else
rtm = 0.0;
/* Output */
if (dflags & SUMMARY) {
if ((mode & MULTI) && (mode & SDBC)) {
if (sdbcstat) {
(void) printf(KPS_INF_FMT,
(float)vals.total_cache);
(void) printf(KPS_INF_FMT,
(float)vals.total_disk);
} else {
(void) printf(DATA_C6, NO_INFO);
(void) printf(KPS_INF_FMT, rd_kb + wr_kb);
}
} else
(void) printf(KPS_INF_FMT, rd_kb + wr_kb);
(void) printf(TPS_INF_FMT, (uint32_t)(rd_cnt + wr_cnt));
(void) printf(SVT_INF_FMT, rtm);
goto done;
}
if (dflags & READ) {
if ((mode & MULTI) && (mode & SDBC)) {
if (sdbcstat) {
(void) printf(KPS_INF_FMT,
(float)vals.cache_read);
(void) printf(KPS_INF_FMT,
(float)vals.disk_read);
} else {
(void) printf(DATA_C6, NO_INFO);
(void) printf(KPS_INF_FMT, rd_kb);
}
} else
(void) printf(KPS_INF_FMT, rd_kb);
(void) printf(TPS_INF_FMT, (uint32_t)rd_cnt);
}
if (dflags & WRITE) {
if ((mode & MULTI) && (mode & SDBC)) {
if (sdbcstat) {
(void) printf(KPS_INF_FMT,
(float)vals.cache_write);
(void) printf(KPS_INF_FMT,
(float)vals.disk_write);
} else {
(void) printf(DATA_C6, NO_INFO);
(void) printf(KPS_INF_FMT, wr_kb);
}
} else
(void) printf(KPS_INF_FMT, wr_kb);
(void) printf(TPS_INF_FMT, (uint32_t)wr_cnt);
}
if (dflags & TIMING) {
(void) printf(SVT_INF_FMT, rtm);
}
done:
linesout++;
}
int
io_value_check(kstat_io_t *pre, kstat_io_t *cur)
{
if (u32_delta(pre->reads, cur->reads))
return (1);
if (u32_delta(pre->writes, cur->writes))
return (1);
return (0);
}
/*
* cd_report() - reports cache desriptor related statistics
* based on the dflags global variable
*
* parameters
* sdbcstat_t *sdbcstat - pointer to the cache structure
* to be reported on.
*/
void
cd_report(sdbcstat_t *sdbcstat)
{
sdbcvals_t vals;
/* Extract statistics, average for time */
if (sdbc_getvalues(sdbcstat, &vals, (SDBC_KBYTES | SDBC_INTAVG)))
return;
/* Output */
if (rflags & MULTI) {
(void) printf(VOL_HDR_FMT, "");
if (dflags & FLAGS) {
(void) printf(STAT_HDR_FMT, "");
(void) printf(STAT_HDR_FMT, "");
}
if (dflags & PCTS)
(void) printf(PCT_HDR_FMT, "");
if (dflags & SUMMARY) {
(void) printf(KPS_INF_FMT, (float)vals.total_cache);
(void) printf(DATA_C4, NO_INFO);
(void) printf(DATA_C4, NO_INFO);
(void) printf("\n");
linesout++;
return;
}
if (dflags & READ) {
(void) printf(KPS_INF_FMT, (float)vals.cache_read);
(void) printf(DATA_C4, NO_INFO);
}
if (dflags & WRITE) {
(void) printf(KPS_INF_FMT, (float)vals.cache_write);
(void) printf(DATA_C4, NO_INFO);
}
if (dflags & TIMING) {
(void) printf(DATA_C4, NO_INFO);
}
linesout++;
(void) printf("\n");
return;
}
if (dflags & SUMMARY) {
(void) printf(DATA_I32, vals.total_cache);
(void) printf(DATA_I32, vals.total_disk);
(void) printf(HIT_INF_FMT, vals.cache_hit);
linesout++;
(void) printf("\n");
return;
}
if (dflags & READ) {
(void) printf(DATA_I32, vals.cache_read);
(void) printf(DATA_I32, vals.disk_read);
(void) printf(HIT_INF_FMT, vals.read_hit);
}
if (dflags & WRITE) {
(void) printf(DATA_I32, vals.cache_write);
(void) printf(DATA_I32, vals.disk_write);
(void) printf(HIT_INF_FMT, vals.write_hit);
}
if (dflags & DESTAGED)
(void) printf(DATA_I32, vals.destaged);
if (dflags & WRCANCEL)
(void) printf(DATA_I32, vals.write_cancellations);
linesout++;
(void) printf("\n");
}
/*
* header() - outputs an appropriate header by referencing the
* global variables dflsgs and rflags
*
*/
void
header()
{
if (hflags & HEADERS_EXL)
if ((linesout % DISPLAY_LINES) != 0)
return;
if (hflags & HEADERS_BOR)
if (linesout != 0)
return;
if (hflags & HEADERS_ATT)
if (hflags & HEADERS_OUT)
return;
else
hflags |= HEADERS_OUT;
if (linesout)
(void) printf("\n");
(void) printf(VOL_HDR_FMT, SET_HDR_TXT);
if (dflags & FLAGS) {
(void) printf(STAT_HDR_FMT, TYPE_HDR_TXT);
(void) printf(STAT_HDR_FMT, STAT_HDR_TXT);
}
if (dflags & ASYNC_QUEUE)
(void) printf(STAT_HDR_FMT, QUEUE_HDR_TXT);
if (dflags & PCTS)
(void) printf(PCT_HDR_FMT, PCT_HDR_TXT);
(void) printf(ROLE_HDR_FMT, ROLE_HDR_TXT);
if (dflags & ASYNC_QUEUE) {
(void) printf(TPS_HDR_FMT, QUEUE_ITEMS_TXT);
(void) printf(KPS_HDR_FMT, QUEUE_KBYTES_TXT);
(void) printf(TPS_HDR_FMT, QUEUE_ITEMS_HW_TXT);
(void) printf(KPS_HDR_FMT, QUEUE_KBYTES_HW_TXT);
}
if (dflags & SUMMARY) {
if ((mode & MULTI) && (mode & SDBC)) {
(void) printf(KPS_HDR_FMT, CKPS_HDR_TXT);
(void) printf(KPS_HDR_FMT, DKPS_HDR_TXT);
} else
(void) printf(KPS_HDR_FMT, KPS_HDR_TXT);
(void) printf(TPS_HDR_FMT, TPS_HDR_TXT);
(void) printf(SVT_HDR_FMT, SVT_HDR_TXT);
(void) printf("\n");
return;
}
if (dflags & READ) {
if ((mode & MULTI) && (mode & SDBC)) {
(void) printf(KPS_HDR_FMT, CRKPS_HDR_TXT);
(void) printf(KPS_HDR_FMT, DRKPS_HDR_TXT);
} else
(void) printf(KPS_HDR_FMT, RKPS_HDR_TXT);
(void) printf(TPS_HDR_FMT, RTPS_HDR_TXT);
}
if (dflags & WRITE) {
if ((mode & MULTI) && (mode & SDBC)) {
(void) printf(KPS_HDR_FMT, CWKPS_HDR_TXT);
(void) printf(KPS_HDR_FMT, DWKPS_HDR_TXT);
} else
(void) printf(KPS_HDR_FMT, WKPS_HDR_TXT);
(void) printf(TPS_HDR_FMT, WTPS_HDR_TXT);
}
if (dflags & TIMING)
(void) printf(SVT_HDR_FMT, SVT_HDR_TXT);
(void) printf("\n");
}