On Thu May 30, 2019 at 05:58:34PM +0200, keld@xxxxxxxxxx wrote:
> On Thu, May 30, 2019 at 04:37:43PM +0200, Reindl Harald wrote:
> >
> >
> > Am 30.05.19 um 12:04 schrieb keld@xxxxxxxxxx:
> > > you need to clarify which layout you use with md raid10.
> > > the layouts are near, far and offset, with very different performance characteristics.
> > > far and offset are designed to be faster than near, which I understand that you use.
> > > So why are you using the slowest md raid10 layout, and not mentioning this fact?
> >
> > besides that when you install a distribution like Fedora "near" is
> > default for pure reads it shouldn't be slower than RAID1 at all, just
> > read from both mirrors of the stripe
>
> near is mdadm default, so people often do not realize the faster options.
>
Are they not only faster on physical disks? The OP indicated they have
an SSD and an NVMe, so I don't see why any of the RAID-10 variations
would perform any better.
Cheers,
Robin
