[meta-intel] (no subject)

[Richard Liu]

Anuj,

Thanks for your reply.

My concern is the best cpu performance for processing network packets, I
think the
intel officials have made some optimizations for this CPU(Atom E3800),
That's why I
want to compile the kernel image with yocto.

But I run the `bitbake linux-intel -c menuconfig`,  I found the Processor
family
configuration is set to xeon(not atom):
Processor type and features  --->  Processor family -> Core 2/newer Xeon


if I want to improve the cpu performance, should I change the processor
family to atom?
Is there any other configuration I can tune?

richard

Mittal, Anuj <anuj.mittal at intel.com> 于2019年5月27日周一 下午10:24写道：

> Hi Richard
>
> On Mon, 2019-05-27 at 13:57 +0800, Richard Liu wrote:
> > Q1: why I must set the MACHINE to“intel-corei7-64”?  my cpu is atom
> > E3845 Soc， not i7, if i set it to intel-core i7, dose the kernel can
> > do best performance?  I just want to build a kernel for atom（not for
> > i7）.  In my opinion, generic kernel is not as good as customization
> > kernel.
>
> intel-corei7-64 is a MACHINE name used by meta-intel and doesn't mean
> that it is specific to i7. You can use this machine value for Atom.
>
> >
> > Q2:  What is the latest version of the kernel supported for Atom
> > E3845, can you give me the refer link?  in the former refer link, the
> > kernel version is 4.14.18, can i modify it to 5.0?
>
> I'd request that you try out the latest 4.14 on warrior (or 4.19)
> instead of 4.14.18 from rocko and report back if you see issues.
>
> linux-intel doesn't have a 5.0 recipe since it's only based on LTS
> kernels. You can switch to using 5.0 linux-yocto kernel though when
> using warrior branch:
>
> PREFERRED_PROVIDER_virtual/kernel = "linux-yocto"
>
> >
> > Q3: I found that the kernel code was retrieved from
> > https://github.com/intel/linux-intel-lts.git,  is there any
> > difference bettween intel kernel (geted from  github.com/intel/linux-
> > intel-lts.git) and official kernel(download from www.kernel.org)?
>
> linux-intel carries Intel specific patches and backports that aren't
> part of stable/mainline kernel.
>
> >
> > Q4:  what is the difference between these branch ?  (
> > root at BUILD-Server:/home/work/yocto/yocto_build/tmp/work-shared/intel-
> > corei7-64/kernel-source# git branch -a)
> > 4.14/base
> > 4.14/base-yocto
>
> There is no difference. If you compare the branches, they should be
> same.
>
> Thanks,
>
> Anuj
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.yoctoproject.org/pipermail/meta-intel/attachments/20190527/3f82e7c1/attachment.html>