From: Stephen Rothwell <sfr@canb.auug.org.au>
To: Eli Cooper <elicooper@gmx.com>
Cc: netdev@vger.kernel.org
Subject: Re: Large performance regression with 6in4 tunnel (sit)
Date: Sun, 27 Nov 2016 13:02:29 +1100 [thread overview]
Message-ID: <20161127130229.4c88cc2c@canb.auug.org.au> (raw)
In-Reply-To: <20161127115441.7654a4e0@canb.auug.org.au>
Hi Eli,
On Sun, 27 Nov 2016 11:54:41 +1100 Stephen Rothwell <sfr@canb.auug.org.au> wrote:
>
> On Fri, 25 Nov 2016 14:05:04 +0800 Eli Cooper <elicooper@gmx.com> wrote:
> >
> > I think this is similar to the bug I fixed in commit ae148b085876
> > ("ip6_tunnel: Update skb->protocol to ETH_P_IPV6 in ip6_tnl_xmit()").
> >
> > I can reproduce a similar problem by applying xfrm to sit traffic.
> > TSO/GSO packets are dropped when IPSec is enabled, and IPv6 throughput
> > drops to 10s of Kbps. I am not sure if this is the same issue you
> > experienced, but I wrote a patch that fixed at least the issue I had.
> >
> > Could you test the patch I sent to the mailing list just now?
>
> Thanks for the patch!
>
> Its a bit tricky to test since the problem only occurs in a production
> machine (I tried reproducing in a VM, but the problem did not occur),
> but I will try to just rebuild the sit module and see if I can insert
> the modified one.
OK, I tried your patch and unfortunately, it doesn't seem to have
worked ... I still get the large packets dropped and resent smaller.
--
Cheers,
Stephen Rothwell
next prev parent reply other threads:[~2016-11-27 2:02 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-25 1:09 Large performance regression with 6in4 tunnel (sit) Stephen Rothwell
2016-11-25 2:18 ` Eli Cooper
2016-11-25 2:45 ` Stephen Rothwell
2016-11-25 3:01 ` Eric Dumazet
2016-11-25 3:09 ` Stephen Rothwell
2016-11-25 3:54 ` Eric Dumazet
2016-11-25 6:12 ` Stephen Rothwell
2016-11-25 4:06 ` Sven-Haegar Koch
2016-11-27 3:23 ` Stephen Rothwell
2016-11-28 17:54 ` Lance Richardson
2016-11-28 19:49 ` Lance Richardson
2016-11-28 21:32 ` Alexander Duyck
2016-11-28 22:38 ` Stephen Rothwell
2016-11-25 6:05 ` Eli Cooper
2016-11-27 0:54 ` Stephen Rothwell
2016-11-27 2:02 ` Stephen Rothwell [this message]
2016-11-27 16:22 ` Eli Cooper
2016-11-25 2:30 ` Eric Dumazet
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