netdev - Re: [-next] Regression: ssh log in slowdown

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Message-ID: <CAMuHMdV+wjdEqKANwu4b=LX1t6X8dhfZKdyCkWB-9KXztPmNhg@mail.gmail.com>
Date:	Sun, 15 Jun 2014 10:42:57 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Tom Herbert <therbert@...gle.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	Linux-Next <linux-next@...r.kernel.org>,
	Linux-sh list <linux-sh@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [-next] Regression: ssh log in slowdown

Hi Tom,

On Fri, Jun 13, 2014 at 5:37 PM, Tom Herbert <therbert@...gle.com> wrote:
>> Thanks, I applied the series "[PATCH 0/4] Checksum fixes", and the fix
>> above, but it doesn't help.
>>
>> Note that I'm also using NFS root, which doesn't seem to be affected.
>> I can happily run "ls -R /" on the serial console during the 10 s delay
> in ssh.
>
> Can you try one more patch below with the series applied? Also, can you

This patch fixes the issue. Thanks!

> look at 'netstat -s' to see if UDP checksum errors are being reported.

Indeed, errors are reported under Udp/InCsumErrors.
With this new patch, no errors are reported.

Thanks!

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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