Re: [Xen-users] very slow disk access

[Brian Krusic <brian@xxxxxxxxxx>]

On Feb 26, 2011, at 6:25 PM, Brian Krusic wrote:

> On Feb 26, 2011, at 6:11 PM, Randy Katz wrote:
>
> > it seems I am using tap:aio on what appears to be quite slow:
> >
> > disk = [ "tap:aio:/disk0/server3.img,xvda,w" ]
> >
> > Is there a good way to convert from tap:aio to lvm?
>
> Hi Randy,
>
> I don't use LVM and my performance is fine.
>
> Have you looked into the domU itself troubleshooting as if it were a  
> non virtual host?
> Things like vmstat, top, tcpdump, dstat, etc... just to get a  
> snapshot of what your system is doing.

Apply the same approach to dom0 as well.

I've used both fixed and non fixed disk images w/o issue.

My env is Centos using the bundled version of Xen as well as Gitcos  
latest 3.X versions.
- Brian

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