On Fri, 14 Jul 2023 21:51:16 +0800 Gao Xiang <hsiangkao@xxxxxxxxxxxxxxxxx> wrote: > >> we need to work on > >> CONFIG_PREEMPT_COUNT=n (why not?), we could just always trigger a > >> workqueue for this. > >> > > > > So CONFIG_PREEMPT_COUNT=n users don't deserve good performance? ;-) > > I'm not sure if non-preemptible kernel users really care about > such sensitive latencies, I don't know, my 2 cents. CONFIG_PREEMPT_COUNT=n is for *performance* but not for *latency*. That is, they care about the overall performance (batch processing) but not interactive performance. -- Steve
