On Tue, Aug 07, 2012 at 04:47:13PM +0800, Asias He wrote: > 1) Ramdisk device > With bio-based IO path, sequential read/write, random read/write > IOPS boost : 28%, 24%, 21%, 16% > Latency improvement: 32%, 17%, 21%, 16% > 2) Fusion IO device > With bio-based IO path, sequential read/write, random read/write > IOPS boost : 11%, 11%, 13%, 10% > Latency improvement: 10%, 10%, 12%, 10% Do you also have numbers for normal SAS/SATA disks? The changelog should have a reall good explanation of why this is optional, and numbers are a very important part of that. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html