Ryan-Git commented on issue #2409:
URL: https://github.com/apache/brpc/issues/2409#issuecomment-1993252450

   intel cpu 的话,linux 启动的时候会做跨 cpu 校准的。
   频率直接用 cpu 的确实可能略有差距,手边的机器大概是 2200.000 vs 2194.843
   可以参考 
[dpdk](https://github.com/DPDK/dpdk/blob/a86f381b826660e88794754c41d3aec79ce9b87c/lib/eal/x86/rte_cycles.c#L107)
 的做法读 cpuid。


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