[pve-devel] [PATCH] qemuserver : iothrottle add support for throttling burst max

Stefan Priebe s.priebe at profihost.ag
Wed Dec 4 20:24:32 CET 2013


Am 04.12.2013 18:25, schrieb Alexandre DERUMIER:
>>> or is that too easy?
>
> I would like to tune value manually, I have differents vm with same throttle,
> but some of them need more burst, depend of the workload.
>
> Example: I have some databases throttle to 10MB/s which I known then need 1GB of data write at full speed sometimes.

i would like to tune them too individually. As it is a value and not /s 
i think we can't use a constant factor for the values /s.

May be it should be hidden by default and open up when selecting 
something like expert mode?

@alexandre
does your patch also include copying these for cloning and templates?

Stefan

> Seem more easy to define the value manually.
>
>
> (Note that the burst is not in iop/s or MB/s, it's ios or MB. the quantity of ios or MB we want to run at full speed before throttling)
>
>
>
> ----- Mail original -----
>
> De: "Dietmar Maurer" <dietmar at proxmox.com>
> À: "Alexandre Derumier" <aderumier at odiso.com>, pve-devel at pve.proxmox.com
> Envoyé: Mercredi 4 Décembre 2013 17:10:17
> Objet: RE: [pve-devel] [PATCH] qemuserver : iothrottle add support for throttling burst max
>
> That whole thing looks a bit clumsy. Does a user really want to specify all those values manually?
>
> Maybe the user can specify a percentage instead, and we can automatically
> compute those burst values?
>
> burst=1.3 ==> ioops_max = ioops * 1.3
>
> or is that too easy?
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