Network slowdown on lo0 introduced with svn186119/186121

[Kip Macy]

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 at 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 at freebsd.org on behalf of Christian Gusenbauer
> Sent: Sun 12/28/2008 9:56 AM
> To: freebsd-current at 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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