28 lines
842 B
C++
28 lines
842 B
C++
#include "examples/procmon/plot.h"
|
|
#include "muduo/base/Timestamp.h"
|
|
#include <vector>
|
|
#include <math.h>
|
|
#include <stdio.h>
|
|
|
|
int main()
|
|
{
|
|
std::vector<double> cpu_usage;
|
|
cpu_usage.reserve(300);
|
|
for (int i = 0; i < 300; ++i)
|
|
cpu_usage.push_back(1.0 + sin(pow(i / 30.0, 2)));
|
|
Plot plot(640, 100, 600, 2);
|
|
muduo::Timestamp start(muduo::Timestamp::now());
|
|
const int N = 10000;
|
|
for (int i = 0; i < N; ++i)
|
|
muduo::string png = plot.plotCpu(cpu_usage);
|
|
double elapsed = timeDifference(muduo::Timestamp::now(), start);
|
|
printf("%d plots in %f seconds, %f PNG per second, %f ms per PNG\n",
|
|
N, elapsed, N / elapsed, elapsed * 1000 / N);
|
|
muduo::string png = plot.plotCpu(cpu_usage);
|
|
|
|
FILE* fp = fopen("test.png", "wb");
|
|
fwrite(png.data(), 1, png.size(), fp);
|
|
fclose(fp);
|
|
printf("Image saved to test.png\n");
|
|
}
|