On Jan 5, 2014, at 5:15 PM, Chris Murphy <li...@colorremedies.com> wrote:
> > On Jan 5, 2014, at 3:36 PM, Brendan Hide <bren...@swiftspirit.co.za> wrote: > >> WD Greens (Reds too, for that matter) have poor non-sequential performance. >> An educated guess I'd say there's a 15% chance this is a major factor to the >> problem and, perhaps, a 60% chance it is merely a "small contributor" to the >> problem. Greens are aimed at consumers wanting high capacity and a low >> pricepoint. The result is poor performance. See footnote * re my experience. >> >> My general recommendation (use cases vary of course) is to install a tiny >> SSD (60GB, for example) just for the OS. It is typically cheaper than the >> larger drives and will be *much* faster. WD Greens and Reds have good >> *sequential* throughput but comparatively abysmal random throughput even in >> comparison to regular non-SSD consumer drives. > > > Another thing with md raid and parallel flie systems that's been an issue is > cqf. Oops, CFQ! Chris Murphy -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
