openstack team mailing list archive

["Bruno Oliveira ~lychinus" <brunnop.oliveira@xxxxxxxxx>]

Hello, any thoughts on this ?

Thank you
--

Bruno Oliveira
Developer, Software Engineer
irc: lychinus | skype: brunnop.oliveira
brunnop.oliveira@xxxxxxxxx





On Mon, Jul 1, 2013 at 4:22 PM, Bruno Oliveira ~lychinus
<brunnop.oliveira@xxxxxxxxx> wrote:
> Hello Stackers,
>
> Today morning I saw an interesting question regarding CPU Scaling
> in the list, which got me to ask the following:
>
> Currently (or in the roadmap) do we have any feature on Nova
> (regardless of the hypervisor underneath) to set maximum disk I/O
> throughput a VM can have ?
>
> I mean, let's say we have hundreds of VMs under the same host as
> in production, and for some reason we're lacking performance due to
> one (or a few of them) being too hungry/greedy for disk reads/writes.
>
> Question 1) Is there a way we can set quotas for disk I/O for a (group of)
> instances ? Like: for this one (or this group), don't exceed the threshold
> of 50 MB/seg
>
> Question 2) Also, do we have anything like vertical scalling ?
> I mean, like defining CPU and Memory Balloons as extra resources
> that a set of VMs can make use of (temporarily), if they're demanding to ?
>
> Note: I've seen some of the videos of "Heat" talking about increasing
> horizontally  the number of instances behind a load balancer to attend
> an increasing number of user requests, for instances...
>
> Thank you so much.
>
> --
>
> Bruno Oliveira
> Developer, Software Engineer
> irc: lychinus | skype: brunnop.oliveira
> brunnop.oliveira@xxxxxxxxx