Re: [Qemu-devel] 答复: 答复: question about pe rformance of dataplane

[Abel Gordon]

address@hidden wrote on 07/04/2013 02:31:20
PM:

> From: Zhangleiqiang <address@hidden>
> To: Stefan Hajnoczi <address@hidden>,
> Cc: Zhangleiqiang <address@hidden>, Stefan Hajnoczi
> <address@hidden>, "Luohao \(brian\)" <address@hidden>,
> "address@hidden" <address@hidden>, Haofeng
<address@hidden>
> Date: 07/04/2013 02:31 PM
> Subject: [Qemu-devel] 答复: 答复:  question about performance of
dataplane
> Sent by: address@hidden
>
> Hi, Stefan:
>
>    Follow your advice, I have finished the benchmarks with multiple
> vcpu (smp) and parallel I/O workloads.
>    The results still show that the performance of disk with
> dataplane enabled did not have advantage over non-dataplane under
> Random write mode. But under the Sequence write mode, the former has
> obvious advantage.

Hi, Leiqzhang

Interesting numbers. How many cores the host has ? was HT enabled ?
Did you try to see what happens when you run more than 1 guest and when
you create at least 1 VCPU per core in the host  ?