Hello Jack Wang and Lindar Liu, I am running the pm8001 driver (on applicable hardware including a several core SMP server). When I run on an older kernel -- e.g. 2.6.34.7 -- I get about 73Kiops via an fio test. When I run a current kernel -- e.g. 2.6.39.2 -- on the same system and same storage I get about 15Kiops running the same fio test. Perhaps something has changes in the kernel that is not being accounted for? Are you two still maintaining this driver? Regards, David -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html