On Mon, Mar 29, 2010 at 2:25 AM, Keith Mannthey <kmannth@xxxxxxxxxx> wrote: > > > After 2.6.30 I am seeing large performance regressions on a raid setup. > I am working to publish a larger amount of data but I wanted to get some > quick data out about what I am seeing. > Is mdraid involved? They added barrier support for some configs after 2.6.30 I believe. It can cause a drastic perf change, but it increases reliability and is "correct". Greg -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html