info.run_procs = cnt;
}
-struct cpu_load_struct {
- unsigned long load[5];
-};
-
-struct cpu_load_struct fresh = { {0, 0, 0, 0, 0} };
-long cpu_used, oldtotal, oldused;
-
void get_cpu_count(void)
{
- /* int cpu_count = 0; */
+ int cpu_count = 0;
+ size_t cpu_count_len = sizeof(cpu_count);
- /* XXX: FreeBSD doesn't allow to get per CPU load stats on SMP machines.
- * It's possible to get a CPU count, but as we fulfill only
- * info.cpu_usage[0], it's better to report there's only one CPU.
- * It should fix some bugs (e.g. cpugraph) */
-#if 0
if (GETSYSCTL("hw.ncpu", cpu_count) == 0) {
info.cpu_count = cpu_count;
+ } else {
+ fprintf(stderr, "Cannot get hw.ncpu\n");
+ info.cpu_count = 0;
}
-#endif
- info.cpu_count = 1;
- info.cpu_usage = malloc(info.cpu_count * sizeof(float));
+ info.cpu_usage = malloc((info.cpu_count + 1) * sizeof(float));
if (info.cpu_usage == NULL) {
CRIT_ERR(NULL, NULL, "malloc");
}
}
-/* XXX: SMP support */
+struct cpu_info {
+ long oldtotal;
+ long oldused;
+};
+
void update_cpu_usage(void)
{
+ int i, j = 0;
long used, total;
- long cp_time[CPUSTATES];
- size_t cp_len = sizeof(cp_time);
+ long *cp_time = NULL;
+ size_t cp_len;
+ static struct cpu_info *cpu = NULL;
+ unsigned int malloc_cpu_size = 0;
+ extern void* global_cpu;
/* add check for !info.cpu_usage since that mem is freed on a SIGUSR1 */
if ((cpu_setup == 0) || (!info.cpu_usage)) {
cpu_setup = 1;
}
- if (sysctlbyname("kern.cp_time", &cp_time, &cp_len, NULL, 0) < 0) {
- fprintf(stderr, "Cannot get kern.cp_time");
+ if (!global_cpu) {
+ malloc_cpu_size = (info.cpu_count + 1) * sizeof(struct cpu_info);
+ cpu = malloc(malloc_cpu_size);
+ memset(cpu, 0, malloc_cpu_size);
+ global_cpu = cpu;
+ }
+
+ /* cpu[0] is overall stats, get it from separate sysctl */
+ cp_len = CPUSTATES * sizeof(long);
+ cp_time = malloc(cp_len);
+
+ if (sysctlbyname("kern.cp_time", cp_time, &cp_len, NULL, 0) < 0) {
+ fprintf(stderr, "Cannot get kern.cp_time\n");
}
- fresh.load[0] = cp_time[CP_USER];
- fresh.load[1] = cp_time[CP_NICE];
- fresh.load[2] = cp_time[CP_SYS];
- fresh.load[3] = cp_time[CP_IDLE];
- fresh.load[4] = cp_time[CP_IDLE];
+ total = 0;
+ for (j = 0; j < CPUSTATES; j++)
+ total += cp_time[j];
- used = fresh.load[0] + fresh.load[1] + fresh.load[2];
- total = fresh.load[0] + fresh.load[1] + fresh.load[2] + fresh.load[3];
+ used = total - cp_time[CP_IDLE];
- if ((total - oldtotal) != 0) {
- info.cpu_usage[0] = ((double) (used - oldused)) /
- (double) (total - oldtotal);
+ if ((total - cpu[0].oldtotal) != 0) {
+ info.cpu_usage[0] = ((double) (used - cpu[0].oldused)) /
+ (double) (total - cpu[0].oldtotal);
} else {
info.cpu_usage[0] = 0;
}
- oldused = used;
- oldtotal = total;
+ cpu[0].oldused = used;
+ cpu[0].oldtotal = total;
+
+ free(cp_time);
+
+ /* per-core stats */
+ cp_len = CPUSTATES * sizeof(long) * info.cpu_count;
+ cp_time = malloc(cp_len);
+
+ /* on e.g. i386 SMP we may have more values than actual cpus; this will just drop extra values */
+ if (sysctlbyname("kern.cp_times", cp_time, &cp_len, NULL, 0) < 0 && errno != ENOMEM) {
+ fprintf(stderr, "Cannot get kern.cp_times\n");
+ }
+
+ for (i = 0; i < info.cpu_count; i++)
+ {
+ total = 0;
+ for (j = 0; j < CPUSTATES; j++)
+ total += cp_time[i*CPUSTATES + j];
+
+ used = total - cp_time[i*CPUSTATES + CP_IDLE];
+
+ if ((total - cpu[i+1].oldtotal) != 0) {
+ info.cpu_usage[i+1] = ((double) (used - cpu[i+1].oldused)) /
+ (double) (total - cpu[i+1].oldtotal);
+ } else {
+ info.cpu_usage[i+1] = 0;
+ }
+
+ cpu[i+1].oldused = used;
+ cpu[i+1].oldtotal = total;
+ }
+
+ free(cp_time);
}
void update_load_average(void)