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srsLTE
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check all cpus scaling governor

This commit is contained in:
Francisco Paisana 2020-08-14 15:05:03 +01:00
parent 5be5409f62
commit a2b8bc9e0a
1 changed files with 16 additions and 10 deletions
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26
lib/include/srslte/common/common_helper.h
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@ -29,6 +29,7 @@
#include "srslte/common/logmap.h"
#include <fstream>
#include <thread>
#ifdef __cplusplus
extern "C" {
@ -52,20 +53,25 @@ inline void check_scaling_governor(const std::string& device_name)
if (device_name == "zmq") {
return;
}
std::ifstream file("/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor");
bool found = false;
if (file.is_open()) {
std::string line;
while (getline(file, line)) {
if (line.find("performance") != std::string::npos) {
found = true;
int nof_cpus = std::thread::hardware_concurrency();
for (int cpu = 0; cpu < nof_cpus; ++cpu) {
char buffer[128];
snprintf(buffer, sizeof(buffer), "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_governor", cpu);
std::ifstream file(buffer);
if (file.is_open()) {
std::stringstream ss;
ss << file.rdbuf();
if (ss.str().find("performance") == std::string::npos) {
printf(
"WARNING: cpu%d scaling governor is not set to performance mode. Realtime processing could be compromised. "
"Consider setting it to performance mode before running the application.\n",
cpu);
break;
}
} else {
printf("WARNING: Could not verify cpu%d scaling governor\n", cpu);
}
}
if (not found) {
printf("WARNING: cpu scaling governor is not set to performance mode.\n");
}
}
#ifdef __cplusplus