Date: Fri, 16 Jan 2009 14:23:00 +0100 From: Christian Gusenbauer <c47g@gmx.at> To: "Li, Qing" <qing.li@bluecoat.com> Cc: qingli@freebsd.org, freebsd-current@freebsd.org, Kip Macy <kmacy@freebsd.org> Subject: Re: Network slowdown on lo0 introduced with svn186119/186121 Message-ID: <200901161423.00602.c47g@gmx.at> In-Reply-To: <031f01c9693d$f7f5a514$7202020a@internal.cacheflow.com> References: <031f01c9693d$f7f5a514$7202020a@internal.cacheflow.com>
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Hi Qing! Did you have some time to look at this problem? Thanks, Christian. On Sunday 28 December 2008, Li, Qing wrote: > I'll investigate and get back to you ... > > -- Qing > > > -----Original Message----- > From: Christian Gusenbauer <c47g@gmx.at> > Sent: Sunday, December 28, 2008 2:04 PM > To: Kip Macy <kmacy@freebsd.org> > Cc: Li, Qing <qing.li@bluecoat.com>; freebsd-current@freebsd.org > <freebsd-current@freebsd.org>; qingli@freebsd.org <qingli@freebsd.org> > Subject: Re: Network slowdown on lo0 introduced with svn186119/186121 > > 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@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. > > > _______________________________________________ > > > freebsd-current@freebsd.org mailing list > > > http://lists.freebsd.org/mailman/listinfo/freebsd-current > > > To unsubscribe, send any mail to > > > "freebsd-current-unsubscribe@freebsd.org" > > > > > > > > > _______________________________________________ > > > freebsd-current@freebsd.org mailing list > > > http://lists.freebsd.org/mailman/listinfo/freebsd-current > > > To unsubscribe, send any mail to > > > "freebsd-current-unsubscribe@freebsd.org"
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