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

Alexandre DERUMIER aderumier at odiso.com
Wed Dec 4 18:25:27 CET 2013


>>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.

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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