On Tue, Apr 21, 2009 at 1:46 AM, John Robinson <john.robinson@xxxxxxxxxxxxxxxx> wrote: > I would have thought it's because you're running in degraded mode and one in > 3 sectors is having to be regenerated from the parity. It still seems a bit > slow, though. i don't think that that is a problem. The data is there without redundancy so i can't see how there would be the need to calculate anything > I'm not quite sure whether I should be disappointed at my writes being so > slow. Certainly there's a lot of rattling during writing, which probably > indicates lots of seeks to write ext3's journal. But reads are roughly what > I expected, at about three times the single-disc throughput. 200 MB/s reads would be nice but i expected quite a bit more speed writing too. I know that you don't get an O(n) speedup but falling behind the normal performance of a single drive seems not okay. Johannes Btw.:The controller is on PCI-E so no bottleneck there -- 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
