Network slowdown on lo0 introduced with svn186119/186121

[Christian Gusenbauer]

Hi Kip!

Hmmm, I thought amanda is using a localhost connection? But you're right. If I 
test connections using the 'discard' or 'echo' service with the IP address of 
my lan interface, I get this terrible throughput, too. Using the localhost 
address the throughput is *much* better!

Thanks,
Christian.

On Sunday 28 December 2008, Kip Macy wrote:
> 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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> >
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