On Wed, May 09, 2012 at 02:19:56PM +0800, Zheng Liu wrote: > disable FUA detection for SATA disk. If FUA feature can be used, we > could disable io_barrier to improve the performance. Now one solution You can't run with -o nobarrier just because the driver/hardware support FUA. However the implementation of -o barrier (aka REQ_FUA) is a lot more efficient if it is implemented. If your workload has a high percentage of REQ_FUA requests it might be better to switch the disks to write through mode entirely. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
