[dpdk-dev] 答复: Is VFIO driver's performance better than IGB_UIO?

Linhaifeng haifeng.lin at huawei.com
Fri Aug 8 09:54:55 CEST 2014


Thank you very much.

My cpu is "Intel(R) Xeon(R) CPU           E5620  @ 2.40GHz" 


-----邮件原件-----
发件人: Vincent JARDIN [mailto:vincent.jardin at 6wind.com] 
发送时间: 2014年8月8日 15:46
收件人: Linhaifeng
抄送: dev at dpdk.org; lixiao (H); Guofeng (E)
主题: Re: [dpdk-dev] Is VFIO driver's performance better than IGB_UIO?

On 08/08/2014 09:41, Linhaifeng wrote:
> I have test the VFIO driver and IGB_UIO driver by l2fwd for many times. I find that the VFIO driver’s performance is not better than the IGB_UIO.

You are right, under some conditions UIO is faster, VFIO provides safety. The best solution is a PMD without UIO, neither VFIO.

which CPU are you using?

Best regards,
  Vincent


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