fastsocket

Looks like they have tested a newer kernel too: https://github.com/fastos/fastsocket#nginx >on Linux 2.6.32 achieves 470K connection per second and 83% efficiency up to 24 cores, while performance of base 2.6.32 kernel increases non-linearly up to 12 cores and drops dramatically to 159K with 24 cores. The latest 3.13 kernel doubles the throughput to 283K when using 24 cores compared with 2.6.32. However, it has not completely solve the scalability bottlenecks, preventing performance from growing when more than 12 cores are used.

Why would the evaluation charts look the way they do? https://github.com/fastos/fastsocket#online-evaluation The "before and after" CPU series have nearly the same exact fit. If the data was from separate 24 hour periods, wouldn't you expect the graphs to look different? I recognize that with a large service, you'd get repetitive load patterns, but the similarity here look a little extreme.