On Dec 6, 2007 1:06 AM, Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx> wrote: > On Wed, 5 Dec 2007, Jon Nelson wrote: > > > I saw something really similar while moving some very large (300MB to > > 4GB) files. > > I was really surprised to see actual disk I/O (as measured by dstat) > > be really horrible. > > Any work-arounds, or just don't perform heavy reads the same time as > writes? What kernel are you using? (Did I miss it in your OP?) The per-device write throttling in 2.6.24 should help significantly, have you tried the latest -rc and compared to your current kernel? -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
