 | | | very poor network performance [solved, sorta] | very poor network performance [solved, sorta] 2003-11-22 - By Reuben D. Budiardja
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On Friday 21 November 2003 01:13 pm, Stephen Smoogen wrote:
> Ok I need to see the lsmod to see what kernel module is being used.. and
> probably the /etc/modules.conf to see if the module has any options. It
> looks like your 10mbit port is the problem. From the number of RX errors
> and other issues you are mentioning.. I am guessing that the Switch
> upstream is not really auto-negotiating or has negotiated to half-duplex
> or something similar. If the switch is smart enough, it might be able to
> see what is going on (ie is the card constantly trying to renegotiate
> for some reason.. this will cause slowdowns.)
On Friday 21 November 2003 01:46 pm, Marco Shaw wrote:
> > > >eth0: 10 Mbit, full duplex, link ok
> > > > product info: vendor 01:e1:c1, model 56 rev 7
> > > > basic mode: isolate, collision test, 10 Mbit, full duplex
>
> Sorry, can 't remember if you ever told us exactly what kind of card you
> have. I 've not much experience with 10/full. Have you tried setting to
> 10/half to see if the performance improves?
>
> I 'd start checking the vendor for updated drivers to see if that 'll help.
> Maybe even try another NIC in the machine.
Hi,
Sorry for late respond. I was constantly working on this and some other
projects.
Anyway, I still don 't know what was the cause problem, but then I switched the
ethernet card to a newer SMC card. Reboot, kudzu then assked me to remove the
old card configuration (3Com), but new card not recognize. Reboot again, then
Kudzu found the new hardware (new card) and detect it correctly. Very weird,
I says, is this RHEL bug?
The new card autonegotiation seems to work for 10Mbit Half duplex. As I said
before, I tried using mii-tool with the old 3Com card to force it to half
duplex, but it didn 't work, and it still gave me full duplex. But now that I
got this card to work, I just won 't mess with it again. I called the network
service to switch the MAC address to the new card. I guess what I don 't
understand is, the 3Com card worked and still works with RH 7.3 out of the
box.
Thanks all for the help.
RDB
--
Reuben D. Budiardja
Department of Physics and Astronomy
The University of Tennessee, Knoxville, TN
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