On Thu, 2022-09-15 at 14:56 +0800, Wu Guanghao wrote: > Sorry for the late feedback. > > The version we are currently testing is 0.8.4, so we only merge the > first 3 patches in this series of patches. Then after the actual > test, > it was found that the effect improvement is not very obvious. > Which path checker are you using? If it's TUR, could you try to simply change the sync wait time? static void tur_timeout(struct timespec *tsp) { get_monotonic_time(tsp); tsp->tv_nsec += 1000 * 1000; /* 1 millisecond */ normalize_timespec(tsp); } Change the 1 millisecond above to e.g. one microsecond. That should speed up the checker significantly. You will get a higher rate of "pending" path states, but that shouldn't matter much. Regards Martin -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel