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Appears to be working? Still need to cleanup after self

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This commit is contained in:
stuart nelson 2016-09-17 18:50:08 +02:00
parent 1d75b376ae
commit a9d27ea722
1 changed files with 32 additions and 41 deletions
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73
collector/cpu_dragonfly.go
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@ -53,19 +53,15 @@ int setupSysctlMIBs() {
return ret;
}
int getCPUTimes(int *ncpu, struct kinfo_cputime *cputime, uint64_t *cpufreq) {
// // Assert that mibs are set up through setupSysctlMIBs
// if (!mibs_set_up) {
// return -1;
// }
// // Retrieve number of cpu cores
// size_t ncpu_size = sizeof(*ncpu);
// if (sysctl(mib_hw_ncpu, mib_hw_ncpu_len, ncpu, &ncpu_size, NULL, 0) == -1 ||
// sizeof(*ncpu) != ncpu_size) {
// return -1;
// }
struct exported_cputime {
uint64_t cp_user;
uint64_t cp_nice;
uint64_t cp_sys;
uint64_t cp_intr;
uint64_t cp_idle;
};
int getCPUTimes(int *ncpu, struct exported_cputime **cputime) {
size_t len;
// Get number of cpu cores.
@ -84,13 +80,10 @@ int getCPUTimes(int *ncpu, struct kinfo_cputime *cputime, uint64_t *cpufreq) {
sizeof(clockrate) != clockrate_size) {
return -1;
}
*cpufreq = clockrate.stathz > 0 ? clockrate.stathz : clockrate.hz;
// // Retrieve cp_times values
// *cp_times_length = (*ncpu) * CPUSTATES;
//
// long cp_times[*cp_times_length];
// size_t cp_times_size = sizeof(cp_times);
// What are the consequences of casting this immediately to uint64_t
// instead of long?
uint64_t cpufreq = clockrate.stathz > 0 ? clockrate.stathz : clockrate.hz;
// Get the cpu times.
struct kinfo_cputime cp_t[*ncpu];
@ -100,7 +93,18 @@ int getCPUTimes(int *ncpu, struct kinfo_cputime *cputime, uint64_t *cpufreq) {
return -1;
}
*cputime = cp_t[0];
struct exported_cputime xp_t[*ncpu];
for (int i = 0; i < *ncpu; ++i) {
xp_t[i].cp_user = cp_t[i].cp_user/cpufreq;
xp_t[i].cp_nice = cp_t[i].cp_nice/cpufreq;
xp_t[i].cp_sys = cp_t[i].cp_sys/cpufreq;
xp_t[i].cp_intr = cp_t[i].cp_intr/cpufreq;
xp_t[i].cp_idle = cp_t[i].cp_idle/cpufreq;
}
*cputime = &xp_t[0];
// free(&cp_t);
return 0;
@ -141,7 +145,7 @@ func NewStatCollector() (Collector, error) {
}, nil
}
type kinfoCPUTime struct {
type exportedCPUTime struct {
cp_user, cp_nice, cp_sys, cp_intr, cp_idle uint64
}
@ -160,38 +164,25 @@ func (c *statCollector) Update(ch chan<- prometheus.Metric) (err error) {
// Look into sys/kern/kern_clock.c for details.
var ncpu C.int
var cpuTimesC C.struct_kinfo_cputime
var cpuFreq C.uint64_t
var cpuTimesC *C.struct_exported_cputime
if C.getCPUTimes(&ncpu, &cpuTimesC, &cpuFreq) == -1 {
if C.getCPUTimes(&ncpu, &cpuTimesC) == -1 {
return errors.New("could not retrieve CPU times")
}
// TODO: Remember to free variables
// defer C.freeCPUTimes(cpuTimesC)
cpuTimes := (*[1 << 30]C.struct_kinfo_cputime)(unsafe.Pointer(&cpuTimesC))[:ncpu:ncpu]
cpuTimes := (*[1 << 30]C.struct_exported_cputime)(unsafe.Pointer(cpuTimesC))[:ncpu:ncpu]
// Sample output:
// 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]}
// 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]}
// Figure out why I'm getting the same values here instead of the second CPU
fmt.Println(cpuTimes)
for i, cpu := range cpuTimes {
c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "user"}).Set(float64(cpu.cp_user / cpuFreq))
c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "nice"}).Set(float64(cpu.cp_nice / cpuFreq))
c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "system"}).Set(float64(cpu.cp_sys / cpuFreq))
c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "interrupt"}).Set(float64(cpu.cp_intr / cpuFreq))
c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "idle"}).Set(float64(cpu.cp_idle / cpuFreq))
c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "user"}).Set(float64(cpu.cp_user))
c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "nice"}).Set(float64(cpu.cp_nice))
c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "system"}).Set(float64(cpu.cp_sys))
c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "interrupt"}).Set(float64(cpu.cp_intr))
c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(i), "mode": "idle"}).Set(float64(cpu.cp_idle))
}
// for cpu := 0; cpu < int(ncpu); cpu++ {
// base_idx := C.CPUSTATES * cpu
// c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(cpu), "mode": "user"}).Set(float64(cpuTimes[base_idx+C.CP_USER]))
// c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(cpu), "mode": "nice"}).Set(float64(cpuTimes[base_idx+C.CP_NICE]))
// c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(cpu), "mode": "system"}).Set(float64(cpuTimes[base_idx+C.CP_SYS]))
// c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(cpu), "mode": "interrupt"}).Set(float64(cpuTimes[base_idx+C.CP_INTR]))
// c.cpu.With(prometheus.Labels{"cpu": strconv.Itoa(cpu), "mode": "idle"}).Set(float64(cpuTimes[base_idx+C.CP_IDLE]))
// }
c.cpu.Collect(ch)
return err