[Users] openvz IO bench

[Zhaohui Wang]

Hi all

Have you ever tried benchmark the IO overhead in openvz? I did 2 set of test, one is 20 times wget a 7.4 file from a remote websever in a network link without interference of other links; the other is cp the 7.4g file for 10 times. The wget test showed 4% IO overhead in openvz 2.6.24 kernel comparing to vanilla,while the cp test showed a  -7% overhead.

How come cp operation is more faster in openvz kernel than vanilla kernel?Any expert can offer a explaination?

Many thanks.


Best Regards
Zhaohui Wang


> -----Original Message-----
> From: users-bounces at openvz.org [mailto:users-bounces at openvz.org] On
> Behalf Of Adeel Nazir
> Sent: Saturday, August 30, 2008 5:34 PM
> To: users at openvz.org; devel at openvz.org
> Subject: [Users] OpenVZ & Linux-rt
> 
> Has anyone tried mixing Ingo Milnar's real-time patchset with the
> OpenVZ patches? Or if anyone has any ideas if there'd be conflicting
> issues between the 2 patchset's? I tried trivially applying the patches
> from both projects and there were a lot of places where the patching
> failed, requiring a manual review, leading me to ask for some details
> on what the openvz patchset really changes from the stock kernel?
> 
> Thanks
> 
> 
> Adeel
> 
> 
> 
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