[pve-devel] Virtio--Blk-Data-Plane deliver much higher I/O rates than both of its major competing hypervisors

[Alexandre DERUMIER]

>>If i remember correctly there were some reasons why it is not available
>>in PVE right now.

I think they are no technical objection and not to difficult to implement. (I need to read the qemu doc)

(But live-migration don't work with Virtio--Blk-Data-Plane)



----- Mail original ----- 

De: "Stefan Priebe - Profihost AG" <s.priebe at profihost.ag> 
À: "Cesar Peschiera" <brain at click.com.py>, pve-devel at pve.proxmox.com 
Envoyé: Jeudi 6 Février 2014 08:37:49 
Objet: Re: [pve-devel] Virtio--Blk-Data-Plane deliver much higher I/O rates than both of its major competing hypervisors 

Yes that's why i'm always staring at Virtio--Blk-Data-Plane but isn't 
it unstable right now and has a lot of missing features? 

If i remember correctly there were some reasons why it is not available 
in PVE right now. 

Stefan 

Am 06.02.2014 08:11, schrieb Cesar Peschiera: 
> Hi people 
> 
> Only as comment for you (if you don't know it), I bring a link PDF of IBM 
> that say between many things: 
> 
> KVM with Virtio--Blk-Data-Plane deliver much higher I/O rates than both 
> of its major competing hypervisors 
> 
> KVM with virtio-blk technology could achieve only about 150,000 I/O 
> operations per second for a single guest 
> 
> KVM with Virtio--Blk-Data-Plane: (Technology Preview in RHEL 6.4) more than 
> 1.5 million IOPS for random I/O requests that were 4KB or less 
> - 49% higher than VMware vSphere 5.1 
> - The highest storage I/O performance ever reported in a virtualized 
> environment 
> 
> VMware vSphere 5.1: recently indicated that it could achieve almost 1.1 
> million IOPS 
> 
> In addition, KVM with virtio-blk-data-plane technology can achieve much 
> higher I/O rates than what Microsoft has claimed for its Hyper-V hypervisor 
> across multiple block sizes 
> 
> ftp://public.dhe.ibm.com/linux/pdfs/KVM_Virtualized_IO_Performance_Paper_v2.pdf 
> 
> 
> Best regards 
> Cesar 
> 
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