Appears to be working? Still need to cleanup after self
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1d75b376ae
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@ -53,19 +53,15 @@ int setupSysctlMIBs() {
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return ret;
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}
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int getCPUTimes(int *ncpu, struct kinfo_cputime *cputime, uint64_t *cpufreq) {
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// // Assert that mibs are set up through setupSysctlMIBs
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// if (!mibs_set_up) {
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// return -1;
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// }
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// // Retrieve number of cpu cores
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// size_t ncpu_size = sizeof(*ncpu);
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// if (sysctl(mib_hw_ncpu, mib_hw_ncpu_len, ncpu, &ncpu_size, NULL, 0) == -1 ||
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// sizeof(*ncpu) != ncpu_size) {
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// return -1;
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// }
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struct exported_cputime {
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uint64_t cp_user;
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uint64_t cp_nice;
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uint64_t cp_sys;
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uint64_t cp_intr;
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uint64_t cp_idle;
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};
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int getCPUTimes(int *ncpu, struct exported_cputime **cputime) {
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size_t len;
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// Get number of cpu cores.
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@ -84,13 +80,10 @@ int getCPUTimes(int *ncpu, struct kinfo_cputime *cputime, uint64_t *cpufreq) {
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sizeof(clockrate) != clockrate_size) {
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return -1;
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}
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*cpufreq = clockrate.stathz > 0 ? clockrate.stathz : clockrate.hz;
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// // Retrieve cp_times values
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// *cp_times_length = (*ncpu) * CPUSTATES;
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//
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// long cp_times[*cp_times_length];
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// size_t cp_times_size = sizeof(cp_times);
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// What are the consequences of casting this immediately to uint64_t
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// instead of long?
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uint64_t cpufreq = clockrate.stathz > 0 ? clockrate.stathz : clockrate.hz;
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// Get the cpu times.
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struct kinfo_cputime cp_t[*ncpu];
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@ -100,7 +93,18 @@ int getCPUTimes(int *ncpu, struct kinfo_cputime *cputime, uint64_t *cpufreq) {
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return -1;
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}
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*cputime = cp_t[0];
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struct exported_cputime xp_t[*ncpu];
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for (int i = 0; i < *ncpu; ++i) {
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xp_t[i].cp_user = cp_t[i].cp_user/cpufreq;
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xp_t[i].cp_nice = cp_t[i].cp_nice/cpufreq;
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xp_t[i].cp_sys = cp_t[i].cp_sys/cpufreq;
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xp_t[i].cp_intr = cp_t[i].cp_intr/cpufreq;
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xp_t[i].cp_idle = cp_t[i].cp_idle/cpufreq;
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}
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*cputime = &xp_t[0];
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// free(&cp_t);
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return 0;
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@ -141,7 +145,7 @@ func NewStatCollector() (Collector, error) {
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}, nil
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}
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type kinfoCPUTime struct {
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type exportedCPUTime struct {
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cp_user, cp_nice, cp_sys, cp_intr, cp_idle uint64
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}
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@ -160,38 +164,25 @@ func (c *statCollector) Update(ch chan<- prometheus.Metric) (err error) {
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// Look into sys/kern/kern_clock.c for details.
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var ncpu C.int
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var cpuTimesC C.struct_kinfo_cputime
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var cpuFreq C.uint64_t
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var cpuTimesC *C.struct_exported_cputime
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if C.getCPUTimes(&ncpu, &cpuTimesC, &cpuFreq) == -1 {
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if C.getCPUTimes(&ncpu, &cpuTimesC) == -1 {
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return errors.New("could not retrieve CPU times")
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}
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// TODO: Remember to free variables
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// defer C.freeCPUTimes(cpuTimesC)
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cpuTimes := (*[1 << 30]C.struct_kinfo_cputime)(unsafe.Pointer(&cpuTimesC))[:ncpu:ncpu]
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cpuTimes := (*[1 << 30]C.struct_exported_cputime)(unsafe.Pointer(cpuTimesC))[:ncpu:ncpu]
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// Sample output:
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// cpu0: {590123223 35166845 334263626 8693757 9845460604 0 0 0 0 [0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]}
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// cpu1: {0 590123223 35166845 334263626 8693757 9845460604 0 0 0 [0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]}
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// Figure out why I'm getting the same values here instead of the second CPU
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fmt.Println(cpuTimes)
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for i, cpu := range cpuTimes {
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c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "user"}).Set(float64(cpu.cp_user / cpuFreq))
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c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "nice"}).Set(float64(cpu.cp_nice / cpuFreq))
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c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "system"}).Set(float64(cpu.cp_sys / cpuFreq))
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c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "interrupt"}).Set(float64(cpu.cp_intr / cpuFreq))
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c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "idle"}).Set(float64(cpu.cp_idle / cpuFreq))
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c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "user"}).Set(float64(cpu.cp_user))
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c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "nice"}).Set(float64(cpu.cp_nice))
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c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "system"}).Set(float64(cpu.cp_sys))
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c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "interrupt"}).Set(float64(cpu.cp_intr))
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c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "idle"}).Set(float64(cpu.cp_idle))
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}
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// for cpu := 0; cpu < int(ncpu); cpu++ {
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// base_idx := C.CPUSTATES * cpu
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// c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(cpu), "mode": "user"}).Set(float64(cpuTimes[base_idx+C.CP_USER]))
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// c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(cpu), "mode": "nice"}).Set(float64(cpuTimes[base_idx+C.CP_NICE]))
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// c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(cpu), "mode": "system"}).Set(float64(cpuTimes[base_idx+C.CP_SYS]))
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// c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(cpu), "mode": "interrupt"}).Set(float64(cpuTimes[base_idx+C.CP_INTR]))
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// c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(cpu), "mode": "idle"}).Set(float64(cpuTimes[base_idx+C.CP_IDLE]))
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// }
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c.cpu.Collect(ch)
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return err
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