Messages in this thread | | | Date | Fri, 04 Nov 2011 17:16:04 +0800 | From | Xiao Guangrong <> | Subject | Re: [PATCH v4 00/11] KVM: x86: optimize for writing guest page |
| |
On 10/11/2011 04:36 PM, Xiao Guangrong wrote: > On 10/09/2011 09:37 PM, Avi Kivity wrote: >> On 10/09/2011 02:24 PM, Avi Kivity wrote: >>> On 10/08/2011 06:06 AM, Xiao Guangrong wrote: >>>> On 10/07/2011 01:53 AM, Marcelo Tosatti wrote: >>>>> On Thu, Sep 22, 2011 at 04:52:40PM +0800, Xiao Guangrong wrote: >>>>>> This patchset is against https://github.com/avikivity/kvm.git next branch. >>>>>> >>>>>> In this version, some changes come from Avi's comments: >>>>>> - fix instruction retried for nested guest >>>>>> - skip write-flooding for the sp whose level is 1 >>>>>> - rename some functions >>>>> >>>>> Please rebase. >>>>> >>>>> >>>> >>>> Marcelo, >>>> >>>> These patches can be applied without any conflict and it also works well, >>>> the current code was pulled from https://github.com/avikivity/kvm.git next branch. >>>> >>>> What problem did you meet when you applied these? :( >>> >>> I guess it was a user error - it applies cleanly here too (and pushed to next, thanks). >>> >> >> However, it seems to reduce performance. >> > > Ouch, will look into it soon.
Hi Avi,
I have done kernbench tests several times on my desktop, but it shows very well:
before patchset: real 212.27 real 213.47 real 204.99 real 200.58 real 199.99 real 199.94 real 201.51 real 199.83 real 198.19 real 205.13
after patchset: real 199.90 real 201.89 real 194.54 real 188.71 real 185.75 real 187.70 real 188.99 real 188.53 real 186.29 real 188.25
I will test it on our server using kvm-autotest, could you share me your config file please?
| |