netdev - Re: Fwd: UDP/IPv6 performance issue

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Date:	Tue, 10 Dec 2013 17:11:36 -0500
From:	ajay seshadri <seshajay@...il.com>
To:	netdev <netdev@...r.kernel.org>,
	Hannes Frederic Sowa <hannes@...essinduktion.org>
Subject: Re: Fwd: UDP/IPv6 performance issue

On Tue, Dec 10, 2013 at 2:46 PM, ajay seshadri <seshajay@...il.com> wrote:
> On Tue, Dec 10, 2013 at 12:12 PM, Hannes Frederic Sowa
> <hannes@...essinduktion.org> wrote:
>> A cached entry will be inserted nontheless. If you don't hit the max_size
>> route entries limit I guess there could be a bug which triggers needless gc
>> invocation.
>
> I am leaning towards needless invocation of gc. At this point in time,
> I am not sure why.


Additionally,  fib6_force_start_gc() doesn't show up in TCP/IPv6 tests
when I disable TSO and am CPU bound. With TSO turned off TCP/IPv4 and
TCP/IPv6 throughputs are identical.

Thanks,
Ajay
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