Hi Vivek, Here is the vanilla kernel and V9 comparision. Normal Read | Random Read | Normal Write | Random Write vanilla(Avg of 3 times) 67580 KiB/s 3540 KiB/s 61964 KiB/s 9823 KiB/s V9(Avg of 3 times) 68954 KiB/s 3567 KiB/s 60654 KiB/s 9858 KiB/s Performance +2.0% +0.7% -2.1% +0.3% -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel