Hi, I am experimenting with Adaptec 31205 hardware raid versus md raid on raid level 10 with 3 arrays of 4 disks each. md array was created with f2 option. I get some results with bonnie++ tests I would like to understand: - per char sequential output is consistantly around 70k/sec for both setup - but block sequential output shows a huge difference between hw and sw raid: about 160k/sec for hw versus 60k/sec for md. Where can this come from ?? On the contrary, md beat hw on inputs: - sequential input show 360k/sec versus 220k/sec for hw - random seek 1350/sec for md versus 1150/sec for hw So, these bonnie++ tests show quite huge differences for the same hardware between adaptec's hardware setup and md driver. Does anyone has any explanation on this ? (btw, the fs on top of this is xfs). Franck - 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
