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Re: Poor disk performance in NetBSD DomU, again
On Tue, May 13, 2014 at 01:29:23PM -0400, Yi Qiao wrote:
> Hi Manuel
> Sorry about that. It's all PV guests. And I don't think partition
> alignments is the dominating issue here since after each experiment, I
it can, depending on how the virtual disk is partitionned in the guest.
> remove the lvm volume for that guest, and create a new one for the
> next guest.
> I also did some more experiment with HVM guests, and here are the
> results (all with NetBSD Dom0)
> NetBSD: 61.66 MB/s (write); 73.69 MB/s (read)
> FreeBSD-9.2: 98.61 MB/s (write); 103.81 MB/s (read)
> OpenBSD-5.5: 24.91 MB/s (write); 59.96 MB/s (read)
> Ubuntu 14.04: 129 MB/s (write); 131 MB/s (read)
> It's interesting to see that NetBSD HVM DomU actually out-performed PV
that's strange indeed
> but still lagging behind FreeBSD and Ubuntu.
that's not surprising, as NetBSD HVM guests lacks PV drivers.
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
NetBSD: 26 ans d'experience feront toujours la difference
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