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Add code to print interrupt statistics when they will be

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exported via sysctl.
This commit is contained in:
Luigi Rizzo 2001-10-07 02:13:23 +00:00
parent ec2dc65015
commit 2fbfa5f862
1 changed files with 42 additions and 0 deletions
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42
release/picobsd/tinyware/vm/vm.c
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@ -34,6 +34,43 @@
#define pgtok(a) ((a) * (u_int) pagesize >> 10)
int
vm_i()
{
#define CNT 49
int cnt[CNT];
char names[CNT*16];
char *a, *namep[CNT*16];
int i,len;
long long inttotal=0;
long uptime=1;
len=sizeof(cnt);
i = sysctlbyname("kern.intrcnt", &cnt, &len, NULL, 0);
if (i != 0)
return i ;
len=sizeof(names);
i = sysctlbyname("kern.intrnames", &names, &len, NULL, 0);
if (i != 0)
return i ;
for( i=0, a = names ; i < CNT && a < names+sizeof(names) ; ) {
namep[i++] = a++;
while (a < names+sizeof(names) && *a)
a++ ;
a++ ; /* skip \0 */
}
printf("interrupt total rate\n");
inttotal = 0;
for (i=0; i< CNT ; i++)
if (cnt[i] >0) {
printf("%-12s %20lu %10lu\n", namep[i], cnt[i], cnt[i]/uptime);
inttotal += cnt[i];
}
printf("Total %20llu %10llu\n", inttotal,
inttotal / (u_int64_t) uptime);
return 0;
}
int
main(int argc, char *argv[])
{
@ -41,6 +78,11 @@ main(int argc, char *argv[])
int pagesize, pagesize_len;
struct vmtotal v;
if (argc > 1 && !strcmp(argv[1], "-i")) {
if (vm_i())
fprintf(stderr, "vm -i stats not available via sysctl\n");
return 0 ;
}
pagesize_len = sizeof(int);
sysctlbyname("vm.stats.vm.v_page_size",&pagesize,&pagesize_len,NULL,0);