Re: BUG REPORT: Massive performance drop in routing throughput with

Mr. James W. Laferriere (babydr@baby-dragons.com)
Mon, 16 Jun 2003 14:18:43 -0400 (EDT)


Hello Martin & Stephan , Since moving to 2.4.21 release from
2.4.21-rc3 . I have noticed that all network connections are slow
to start . But have normal responsiveness after the connection
has been negotiated . This all network activity . I do have two
nics in my system . One eepro100 driven & one ns38320 driven .
My MB is a Tyan thunder s2567 . When I was running 2.4.21-rc3 the
starting of the connections seemed avaerage but since there has
been a Markedly slower response to connection establishment .
Twyl , JimL

On Mon, 16 Jun 2003, Martin Zwickel wrote:
> On my Home-Gateway I have the same problem.
> (route 1-1 with iptables)
> But I don't know if it's a broken network cable or something else.
>
> Hmm, but before I switched the kernel from 2.0.x to 2.4.21 I thought I had a
> better throughput. (my HUB always gives a few collisions, but it was ok)
>
> i have 2 RTL8139 cards:
> 00:09.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
> RTL-8139/8139C/8139C+ (rev 10)
> 00:0b.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
> RTL-8139/8139C/8139C+ (rev 10)
>
>
> and i still don't know what the carrier means:
> eth0 Link encap:Ethernet HWaddr 00:50:BF:1A:02:01
> inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:19971100 errors:289699 dropped:1 overruns:20 frame:0
> TX packets:18045589 errors:108785 dropped:0 overruns:0 carrier:217570
> collisions:46041 txqueuelen:100
> RX bytes:2036864361 (1942.5 Mb) TX bytes:808600381 (771.1 Mb)
> Interrupt:11 Base address:0xdf00
>
> eth1 Link encap:Ethernet HWaddr 00:30:84:3D:A3:00
> inet addr:10.0.0.1 Bcast:10.0.0.255 Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:18179395 errors:110 dropped:0 overruns:0 frame:0
> TX packets:19959609 errors:0 dropped:0 overruns:0 carrier:0
> collisions:103850 txqueuelen:100
> RX bytes:1069462782 (1019.9 Mb) TX bytes:2154547542 (2054.7 Mb)
> Interrupt:5 Base address:0xfe00
>
>
> On Mon, 16 Jun 2003 14:51:35 +0200
> Stephan von Krawczynski <skraw@ithnet.com> bubbled:
>
> > On Mon, 16 Jun 2003 14:47:15 +0200 (CEST)
> > Maciej Soltysiak <solt@dns.toxicfilms.tv> wrote:
> >
> > > > there seems to be a real serious problem with 2.4.21, routing through two
> > > > ethernet-devices. After 24 hours of a routing-only box the throughput from
> > > > ethernet a to ethernet b decreased to something around 4-100 kByte/sec
> > > > (100 Mbit network 2 cards ns83820). I had to drop using 2.4.21 on this box
> > > > because of this. 2.4.20 is flawless on the machine and ran for around 100
> > > > days before without any troubles. Going back to 2.4.20 cured it.
> > > Are you using any netfilter patch-o-matic patches?
> >
> > No.
> >
> > > Does it also affect eg. ssh latency even on LAN ?
> >
> > Not very seriously.
> >
> > > Since I switched my processor from Intel do Amd, I have been experiencing
> > > similar but after longer periods of time than yours.
> > >
> > > I am also using VIA chipset, maybe it's a hardware driver problem.
> >
> > No, my two boxes have differing mb's. One is VIA, the other is Intel440BX.
> >
> > But I can also verify that the problem arises with 2.4.21-rc7, too. I guess it
> > is effectively an older problem that has not been recognised so far.
> >
> > > Regards,
> > > Maciej
> >
> > Regards,
> > Stephan
> >
> > -
> > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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> > Please read the FAQ at http://www.tux.org/lkml/
>
> Regards,
> Martin
>
>

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