双核推理时的耗时与帧率如何理解

双核帧率38.185669 FPS，单核19FPS，耗时应该是53ms，与 Average latency差太多了。正确理解应该是什么样的

双BPU核多线程并发状态下评测FPS

Running condition:

Thread number is: 8

Frame count   is: 1000

Program run time: 26187.835000 ms

Perf result:

Frame totally latency is: 208419.812500 ms

Average    latency    is: 208.419815 ms

Frame      rate       is: 38.185669 FPS