On Mon, Nov 30, 2009 at 6:24 PM, Arun Jagatheesan <arun.jagatheesan@xxxxxxxxx> wrote: > We are trying some experiments on our linux raid. We are having bottleneck > in scaling the RAID after ~250K IOPS. Is there a known issue of s/w max > limit or is it simply an issue of configuration? > > We have (16 x 64G) SSDs on a RAID0. Our IOPS on this RAID0 stops at 250K > (even with lesser or more SSD drives). Whereas we get 540K IOPS with the > same number of SSDs (RAW no RAID). We find a linear scale-up for each SSD we > add to RAID0 until we reach ~250K IOPS limit. After the RAID0 reaches this > limit, its just a straight line plateau with no increase in performance. What are the specs of the rest of the system, and was does top/vmstat look like? -Dave -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
