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root/i-scream/projects/libstatgrab/src/libstatgrab/page_stats.c
Revision: 1.2
Committed: Tue Feb 18 23:12:08 2003 UTC (21 years, 2 months ago) by pajs
Content type: text/plain
Branch: MAIN
Changes since 1.1: +17 -5 lines
Log Message: 
Finished page stats. It returns 2 things. One, number of pages swapped in and
out, 2, the number of pageins and pageouts. As to if this is actually
correct or not, im not 100% sure, but tests seem to imply it is.

from:
http://www.sun.com/sun-on-net/itworld/UIR960901perf.html

        ulong   pgin;           /* pageins                              */
        ulong   pgpgin;         /* pages paged in                       */
        ulong   pgout;          /* pageouts                             */
        ulong   pgpgout;        /* pages paged out                      */
        ulong   swapin;         /* swapins                              */
        ulong   pgswapin;       /* pages swapped in                     */
        ulong   swapout;        /* swapouts

I am *not* using swapins and swapouts. I did this in the orginal libstatgrab,
and it didn't work. Looking at it more closely, it always seems to have 0 in
it, so my guess is its broke. :)

File Contents

# User Rev Content
1 pajs 1.1 /*
2     * i-scream central monitoring system
3     * http://www.i-scream.org.uk
4     * Copyright (C) 2000-2002 i-scream
5     *
6     * This program is free software; you can redistribute it and/or
7     * modify it under the terms of the GNU General Public License
8     * as published by the Free Software Foundation; either version 2
9     * of the License, or (at your option) any later version.
10     *
11     * This program is distributed in the hope that it will be useful,
12     * but WITHOUT ANY WARRANTY; without even the implied warranty of
13     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14     * GNU General Public License for more details.
15     *
16     * You should have received a copy of the GNU General Public License
17     * along with this program; if not, write to the Free Software
18     * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19     */
20    
21     #ifdef HAVE_CONFIG_H
22     #include "config.h"
23     #endif
24    
25     #include <stdio.h>
26 pajs 1.2 #include "statgrab.h"
27 pajs 1.1 #ifdef SOLARIS
28     #include <kstat.h>
29     #include <sys/sysinfo.h>
30 pajs 1.2 #include <string.h>
31 pajs 1.1 #endif
32    
33     page_stat_t *get_page_stats(){
34     static page_stat_t page_stats;
35     kstat_ctl_t *kc;
36     kstat_t *ksp;
37     cpu_stat_t cs;
38 pajs 1.2
39     page_stats.num_pagein=0;
40     page_stats.num_pageout=0;
41     page_stats.pages_pagein=0;
42     page_stats.pages_pageout=0;
43 pajs 1.1
44     if ((kc = kstat_open()) == NULL) {
45     return NULL;
46     }
47     for (ksp = kc->kc_chain; ksp!=NULL; ksp = ksp->ks_next) {
48     if ((strcmp(ksp->ks_module, "cpu_stat")) != 0) continue;
49     if (kstat_read(kc, ksp, &cs) == -1) {
50     continue;
51     }
52    
53 pajs 1.2 page_stats.num_pagein+=(long long)cs.cpu_vminfo.pgin;
54     page_stats.num_pageout+=(long long)cs.cpu_vminfo.pgout;
55     page_stats.pages_pagein+=(long long)cs.cpu_vminfo.pgpgin;
56     page_stats.pages_pageout+=(long long)cs.cpu_vminfo.pgpgout;
57     }
58    
59     page_stats.systime=time(NULL);
60    
61     kstat_close(kc);
62 pajs 1.1
63 pajs 1.2 return &page_stats;
64 pajs 1.1 }