7 Factors that Influence UnixBench Scores

Factor 1: CPU Pinning and Unpinning

Factor 2: Clock Speed

Factor 3: UnixBench Algorithm Defect 1: Pipe-Based Context Switching

wget https://raw.githubusercontent.com/aliyun/byte-unixbench/master/unixbench.sh
sh unixbench.sh

Factor 4: UnixBench Algorithm Defect 2: Double-Precision Whetstone

#include <stdio.h>
#include <math.h>
int main(int argc, char *argv[])
{
long ix, i, xtra = atol(argv[1]), n8 = 93*x100;
double x = 0.75;
double t1 = 0.50000025;
for (ix=0; ix < xtra; ix++)
{
for(i=0; i < n8; i++)
{
x = sqrt(exp(log(x)/t1));
}
}
}

Factor 5: Differences in Compilation Options

Factor 6: Kernel Parameter Adjustment

Factor 7: Process Interference

Conclusion

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