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Date:      Sun, 28 Dec 2008 13:52:03 -0800
From:      "Kip Macy" <kmacy@freebsd.org>
To:        "Li, Qing" <qing.li@bluecoat.com>
Cc:        qingli@freebsd.org, freebsd-current@freebsd.org
Subject:   Re: Network slowdown on lo0 introduced with svn186119/186121
Message-ID:  <3c1674c90812281352s62d3654n983b6eab90567778@mail.gmail.com>
In-Reply-To: <B583FBF374231F4A89607B4D08578A431442F1@bcs-mail03.internal.cacheflow.com>
References:  <200812281856.20118.c47g@gmx.at> <B583FBF374231F4A89607B4D08578A431442F1@bcs-mail03.internal.cacheflow.com>

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This problem can reproduced with netperf. 127.0.0.1 will give good
throughput, but using the IP address of one of the interfaces gives
terrible throughput.

-Kip

On Sun, Dec 28, 2008 at 12:50 PM, Li, Qing <qing.li@bluecoat.com> wrote:
> Hi Christian,
>
> Is the loopback address or an address that is assigned to
> an interface used by amanda? Would it be possible for you
> to give me some information on the tests you performed and
> on your method of measurement?
>
> Thanks,
>
> -- Qing
>
> ________________________________
>
> From: owner-freebsd-current@freebsd.org on behalf of Christian Gusenbauer
> Sent: Sun 12/28/2008 9:56 AM
> To: freebsd-current@freebsd.org
> Subject: Network slowdown on lo0 introduced with svn186119/186121
>
>
>
> Hi!
>
> Today I built a new kernel on current and experienced a massive network
> slowdown on lo0 when doing a backup using amanda. I made some tests and it
> seems that the commits 186119 and 186121 to the svn repository are causing
> it. A kernel based on revision 186107 runs fine and all kernels starting with
> revison 186119 do not.
>
> This slowdown seems to appear only on the loopback interface, not on my lan
> interface.
>
> Is this a known issue?
>
> Regards,
> Christian.
> _______________________________________________
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>
>
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Als die Nazis die Kommunisten holten,
habe ich geschwiegen;
ich war ja kein Kommunist.

Als sie die Sozialdemokraten einsperrten,
habe ich geschwiegen;
ich war ja kein Sozialdemokrat.

Als sie die Gewerkschafter holten,
habe ich nicht protestiert;
ich war ja kein Gewerkschafter.

Als sie die Juden holten,
habe ich geschwiegen;
ich war ja kein Jude.

Als sie mich holten,
gab es keinen mehr, der protestieren konnte.



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