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intel: fdinfo gpu load attempt

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fdinfo-intel
FlightlessMango 1 year ago
parent f8e971a64f
commit 0e75d4bb69
1 changed files with 80 additions and 49 deletions
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129
src/intel.cpp
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@ -1,70 +1,101 @@
#include <thread> #include <thread>
#include <unistd.h>
#include <stdlib.h>
#include "overlay.h" #include "overlay.h"
#include "gpu.h" #include "gpu.h"
#include "spdlog/spdlog.h" #include "spdlog/spdlog.h"
#include <nlohmann/json.hpp> #include "nlohmann/json.hpp"
#include <inttypes.h>
using json = nlohmann::json; using json = nlohmann::json;
static bool init_intel = false; static bool init_intel = false;
struct gpuInfo gpu_info_intel {}; struct gpuInfo gpu_info_intel {};
static char pid[10];
static FILE *fp;
static void intelGpuThread(){ // static void intelGpuThread(){
init_intel = true; // init_intel = true;
static char stdout_buffer[1024]; // static char stdout_buffer[1024];
FILE* intel_gpu_top = popen("intel_gpu_top -J -s 500", "r"); // FILE* intel_gpu_top = popen("intel_gpu_top -J -s 500", "r");
int num_line = 0; // int num_line = 0;
std::string buf; // std::string buf;
int num_iterations = 0; // int num_iterations = 0;
while (fgets(stdout_buffer, sizeof(stdout_buffer), intel_gpu_top)) { // while (fgets(stdout_buffer, sizeof(stdout_buffer), intel_gpu_top)) {
if (num_line > 0) // if (num_line > 0)
buf += stdout_buffer; // buf += stdout_buffer;
num_line++; // num_line++;
if (strlen(stdout_buffer) < 4 && !strchr(stdout_buffer, '{') && !strchr(stdout_buffer, ',')) { // if (strlen(stdout_buffer) < 4 && !strchr(stdout_buffer, '{') && !strchr(stdout_buffer, ',')) {
if (buf[0] != '{') // if (buf[0] != '{')
buf = "{\n" + buf; // buf = "{\n" + buf;
if (num_iterations > 0){ // if (num_iterations > 0){
buf += "\n}"; // buf += "\n}";
json j = json::parse(buf); // json j = json::parse(buf);
if (j.contains("engines")) // if (j.contains("engines"))
if (j["engines"].contains("Render/3D/0")) // if (j["engines"].contains("Render/3D/0"))
if (j["engines"]["Render/3D/0"].contains("busy")) // if (j["engines"]["Render/3D/0"].contains("busy"))
gpu_info_intel.load = j["engines"]["Render/3D/0"]["busy"].get<int>(); // gpu_info_intel.load = j["engines"]["Render/3D/0"]["busy"].get<int>();
if (j.contains("frequency")) // if (j.contains("frequency"))
if (j["frequency"].contains("actual")) // if (j["frequency"].contains("actual"))
gpu_info_intel.CoreClock = j["frequency"]["actual"].get<int>(); // gpu_info_intel.CoreClock = j["frequency"]["actual"].get<int>();
if (j.contains("power")){ // if (j.contains("power")){
if (j["power"].contains("GPU")) // if (j["power"].contains("GPU"))
gpu_info_intel.powerUsage = j["power"]["GPU"].get<float>(); // gpu_info_intel.powerUsage = j["power"]["GPU"].get<float>();
if (j["power"].contains("Package")) // if (j["power"].contains("Package"))
gpu_info_intel.apu_cpu_power = j["power"]["Package"].get<float>(); // gpu_info_intel.apu_cpu_power = j["power"]["Package"].get<float>();
} // }
} // }
buf = ""; // buf = "";
num_line = 0; // num_line = 0;
} // }
num_iterations++; // num_iterations++;
} // }
int exitcode = pclose(intel_gpu_top) / 256; // int exitcode = pclose(intel_gpu_top) / 256;
if (exitcode > 0){ // if (exitcode > 0){
if (exitcode == 127) // if (exitcode == 127)
SPDLOG_INFO("Failed to open '{}'", "intel_gpu_top"); // SPDLOG_INFO("Failed to open '{}'", "intel_gpu_top");
if (exitcode == 1) // if (exitcode == 1)
SPDLOG_INFO("Missing permissions for '{}'", "intel_gpu_top"); // SPDLOG_INFO("Missing permissions for '{}'", "intel_gpu_top");
SPDLOG_INFO("Disabling gpu_stats"); // SPDLOG_INFO("Disabling gpu_stats");
_params->enabled[OVERLAY_PARAM_ENABLED_gpu_stats] = false; // _params->enabled[OVERLAY_PARAM_ENABLED_gpu_stats] = false;
} // }
} // }
void getIntelGpuInfo(){ void getIntelGpuInfo(){
if (!init_intel) static char path[100] = "/proc/";
std::thread(intelGpuThread).detach(); if (!init_intel){
sprintf(pid, "%i", getpid());
strcat(path, pid);
strcat(path, "/fdinfo/8");
fp = fopen(path, "r");
init_intel = true;
}
fp = fopen(path, "r");
static char line[100];
static uint64_t busy_ns;
static uint64_t prev_ns;
static uint64_t busy_percent;
while (fgets(line, sizeof(line), fp))
sscanf(line, "drm-engine-render: %" PRId64 " ns", &busy_ns);
if (busy_ns < prev_ns){
fclose(fp);
return;
}
uint64_t busy_time_ns = busy_ns - prev_ns;
busy_percent = busy_time_ns / 5000000;
prev_ns = busy_ns;
if (busy_percent > 100) busy_percent = 100;
gpu_info_intel.load = busy_percent;
gpu_info = gpu_info_intel; gpu_info = gpu_info_intel;
fclose(fp);
} }

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