netdev - Re: [PATCH RFC v3 net 0/2] ipv6: Avoid restarting fib6_lookup() for RTF

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Date:	Tue, 07 Oct 2014 02:10:47 +0200
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Martin KaFai Lau <kafai@...com>, netdev@...r.kernel.org
Subject: Re: [PATCH RFC v3 net 0/2] ipv6: Avoid restarting fib6_lookup() for
 RTF_CACHE hit

On Tue, Oct 7, 2014, at 02:05, Martin KaFai Lau wrote:
> Notes: Same as the last two versions but fixed a title and missing
> Signed-Off issue.
> 
> I am trying to understand why there is a need to restart fib6_lookup()
> after
> getting rt with RTF_CACHE.
> 
> I have adapted davem's udpflood test
> (https://urldefense.proofpoint.com/v1/url?u=https://git.kernel.org/pub/scm/linux/kernel/git/davem/net_test_tools.git&k=ZVNjlDMF0FElm4dQtryO4A%3D%3D%0A&r=%2Faj1ZOQObwbmtLwlDw3XzQ%3D%3D%0A&m=j4KoKiV%2FLl4Dx6wOKiDLZPDODlbMJ5UBybTiTzIRHTM%3D%0A&s=68cac2d1d239e23b104065419b4ad89ea80bc1401571034ccce3b4a52a98a8d3)
> to
> support IPv6 and here is the result:
> 
> #root > time ./udpflood -l 20000000 -c 250 2401:db00:face:face::2
> 
> Before:
> real    0m33.224s
> user    0m2.941s
> sys     0m30.232s
> 
> After:
> real    0m31.517s
> user    0m2.938s
> sys     0m28.536s

Thanks, Martin! I'll review them ASAP.

Bye,
Hannes
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