Re: big picture UDP/IP performance question re 2.6.18 -> 2.6.32

From: starlight
Date: Sat Oct 01 2011 - 14:19:40 EST

At 08:44 AM 10/1/2011 +0200, Eric Dumazet wrote:
>In my experience, I have the exact opposite :
>performance greatly improved in recent
>kernels. Unless you compile your kernel to include
>new features that might reduce performance
>(namespaces, cgroup, ...)

RH has both of the above turned on in the
2.6.32-71.29.1.el6.x86_64 kernel tested.

If these are big negatives to network
performance, could you list what should
specifically turned off to maximize
results? Also a recommendation for
the best recent kernel for another
benchmark would be helpful.

Probably can't convince anyone to deploy a
kernel without commercial support, but if
an alternate compile fixes performance it
might be possible to convince RH to support
the alternative build.

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