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Re: IOPS limitation with XenServer as hypervisor


Hi Melanie,

with KVM it works (but I'm not aware of Xen atm) - you set upper limits for
number of bytes per sec and IOs per seconds for both read and writes, on
Disk Offering (and Compute offering) by defining HyperVisor QoS values.

Example for manual play:
https://fedoraproject.org/wiki/QA:Testcase_Virtualization_IO_Throttling

Cheers
Andrija

On Mon, 26 Nov 2018 at 14:28, Melanie Desaive <m.desaive@xxxxxxxxxxxxxxxxxxx>
wrote:

> Hi all,
>
> do I get it right, that there is no way to limit IOPS per volume with
> XenServer as hypervisor? (Using ACS 4.11)
>
> I tried the settings to limit IO bandwidth and IOPS per volume on
> hypervisor side with XenServer and only the bandwidth limitation seems
> to have an effect. Seems to me, that this is not supported from the
> XenServer side at all. Is that correct?
>
> See:
> https://bugs.xenserver.org/browse/XSO-580
> https://github.com/xapi-project/blktap/issues/241
>
> Are those features working with KVM?
>
> Greetings, Melanie
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-- 

Andrija Panić