Update some copyright notices to become more legal compliant.
[dragonfly.git] / test / pcpu / ncache-stats.c
CommitLineData
24e51f36 1/*
033a4603 2 * Copyright (c) 2003, 2004 Hiten Pandya <hmp@backplane.com>.
24e51f36
HP
3 *
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following
12 * disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY HITEN PANDYA AND CONTRIBUTORS "AS IS" AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL HITEN PANDYA OR CONTRIBUTORS
22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
25 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
27 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
28 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
033a4603 30 * $DragonFly: src/test/pcpu/ncache-stats.c,v 1.2 2004/06/28 02:57:11 drhodus Exp $
24e51f36
HP
31 */
32
33#include <sys/param.h>
34#include <sys/nchstats.h>
35#include <sys/sysctl.h>
36
37#include <stdio.h>
38#include <stdlib.h>
39#include <strings.h>
40#include <err.h>
41#include <kvm.h>
42
43#define _NCH_ENT(t, n, tt) \
44 printf("%-20s", t); \
45 for (i = 1; i <= ncpus; ++i) { \
46 printf("%-9ld%s", nch[i-1]. ## n, "\t"); \
47 if (i == ncpus) \
48 printf("(%-9ld)\n", tt. ## n); \
49 } \
50
51/*
52 * Aggregate the per-cpu counters we retrieved via sysctl(2)
53 * to give the total across the CPUs. Use a nasty trick to
54 * aggregate the counters in the structure! YYY
55 */
56#if 0
57static void
58nch_cpuagg(struct nchstats *unagg, struct nchstats *ttl, int cpucnt)
59{
60 int i, off, siz;
61 siz = sizeof(struct nchstats);
62
63 if (!unagg && !ttl)
64 return;
65
66 bzero(ttl, siz);
67
68 /* kick hmp@ for this nasty loop! :-) */
69 for (i = 0; i < cpucnt; ++i) {
70 for (off = 0; off < siz; off += sizeof(u_long)) {
71 *(u_long *)((char *)(*(&ttl)) + off) +=
72 *(u_long *)((char *)&unagg[i] + off);
73 }
74 }
75}
76#endif
77
78int main(void)
79{
80 int i, ncpus;
81 struct nchstats *nch, total;
82 size_t nch_len = SMP_MAXCPU * sizeof(struct nchstats);
83 u_long nchtotal;
84
85 nch = malloc(nch_len);
86 if (!nch)
87 exit(-1);
88
89 /* retrieve the statistics */
90 if (sysctlbyname("vfs.cache.nchstats", nch, &nch_len, NULL, 0) < 0) {
91 warn("sysctl");
92 exit(-1);
93 } else {
94 nch = realloc(nch, nch_len);
95 if (!nch)
96 exit(-1);
97 }
98
99 ncpus = nch_len / sizeof(struct nchstats);
100
101#if defined(DEBUG)
102 printf("Number of processors = %d\n", ncpus);
103#endif
104
105 kvm_nch_cpuagg(nch, &total, ncpus);
106 nchtotal = total.ncs_goodhits + total.ncs_neghits +
107 total.ncs_badhits + total.ncs_falsehits +
108 total.ncs_miss + total.ncs_long;
109
110 printf("VFS Name Cache Effectiveness Statistics\n");
111 printf("%9ld total name lookups\n",nchtotal);
112
113 printf("%-20s", "COUNTER");
114
115 for (i = 1; i <= ncpus; ++i) {
116 printf("%3s-%-2d%s", "CPU", i, "\t");
117 if (i == ncpus)
118 printf("\t%-9s\n", "TOTAL");
119 }
120
121 _NCH_ENT("goodhits", ncs_goodhits, total);
122 _NCH_ENT("neghits", ncs_neghits, total);
123 _NCH_ENT("badhits", ncs_badhits, total);
124 _NCH_ENT("falsehits", ncs_falsehits, total);
125 _NCH_ENT("misses", ncs_miss, total);
126 _NCH_ENT("longnames", ncs_long, total);
127 _NCH_ENT("passes 2", ncs_pass2, total);
128 _NCH_ENT("2-passes", ncs_2passes, total);
129
130 free(nch);
131
132 return 0;
133}