Keith Busch <kbusch@xxxxxxxxxx> 于2022年12月23日周五 05:56写道： > > With 12 drives and only 6 CPUs, the bypass mode is going to get more irq > context switching. Sounds like the non-bypass mode is aggregating and > spreading interrupts across the cores better, but there's probably some > cpu:drive count tipping point where performance favors the other way. We found that tunning the interrupt aggregation can also bring the drive performance back to normal. > The fio jobs could also probably set their cpus_allowed differently to > get better performance in the bypass mode. We used the cpus_allowed in FIO to fix 12 dirves in 6 different CPU. By the way, sorry for emailing twice, the last one had the format problem.
