3c905B fast on NT, slow on Linux

Roger Ward gte520p@prism.gatech.edu
Mon Feb 14 07:03:59 2000


try loading the driver as a module, and manually setting the options flag
(refer to the doc. w/ the vortex drivers, etc... don't happen to know the
flags at the moment)

a similar problem existed on my computer, and manually setting the options
(instead of auto/negotiate/select) worked much better... 

hope this helps,
-=|=-=|=-=|=-=|=-=|=-=|=-=|=-=|=-
Roger Ward ICQ: 1095347
Email: gte520p@prism.gatech.edu 
-or- roger.ward@iname.com

On Thu, 30 Sep 1999, Woodford, Paul wrote:

> I have a dual boot box with a 3c905B.  When I boot into NT, I get good
> performance with the card.  Transferring a 128 MB file takes 12-20 seconds.
> When I am in Linux, however, the performance is really slow; a 128 MB file
> will take about a minute.  The hardware doesn't change at all; same card,
> same wires, etc.
> 
> During boot I get:
> 
> 3c59x.c:v0.99H 11/17/98 Donald Becker
> http://cesdis.gsfc.nasa.gov/linux/drivers/vortex.htmleth0: 3Com 3c905B Cyclone 100baseTx at 0xb800,  00:10:4b:14:c2:88, IRQ 18  8K byte-wide RAM 5:3 Rx:Tx split, autoselect/Autonegotiate interface.  MII transceiver found at address 24, status 786d.  MII transceiver found at address 0, status 786d.  Enabling bus-master transmits and whole-frame receives.
> The results from cat /proc/net/dev are:
> 
> Inter-|   Receive                                                |  Transmit face |bytes    packets errs drop fifo frame compressed multicast|bytes
> packets errs drop fifo colls carrier compressed    lo:  111517     812    0    0    0     0          0         0   111517
> 812    0    0    0     0       0          0 dummy:       0       0    0    0    0     0          0         0        0
> 0    0    0    0     0       0          0  eth0:374227954  767941  679    0    0  1037          0         0 963264949
> 878331    0    0    0     0       0          0
> I experimented briefly with 0.99L, but it didn't seem to help.  Any ideas?
> Is there any further information I should look at?  I have vortex-diag and
> mii-diag, but I don't know what to do with them.
> 
> Paul Woodford
> 
> 


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