Re: [Xen-users] xen ov guest nfs

["Fajar A. Nugraha" <fajar@xxxxxxxxx>]

On Sun, Mar 1, 2009 at 2:51 PM, Denis J. Cirulis <denis@xxxxxxxxxxxxx> wrote:
> Dom0.

That's strange. I tested domU on RHEL dom0, with storage located on
iscsi-exported zfs volume from opensolaris, there's not much
difference in domU CPU usage. I did notice substantial difference in
domU I/O throughput due to the fact that I'm using 100Mbps switch
instead of 1Gbps.

What does "top" on domU say? Is the high load on "us", or is it on "sy" or "wa"?
What does "iostat -x 3" on dom0 say? Is the iscsi-imported disk
experiencing 100% util?

If it IS I/O throughput problem, then iscsi, aoe, or nfs should be
same: none of them would provide acceptable performance. If it's
something else, then you can safely use nfs.

>
> On Sun, Mar 01, 2009 at 09:19:57AM +0700, Fajar A. Nugraha wrote:
>> On Sun, Mar 1, 2009 at 5:00 AM, Denis J. Cirulis <denis@xxxxxxxxxxxxx> wrote:
>> > I tried AoE and iSCSI already, software iscsi target and initiator gives
>> > me high cpu load on both domU and target. AoE was less resource hungry.
>>
>> High domU CPU? Seriously? Who's importing the iscsi target, dom0 or domU?
>

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