[3607] in linux-net channel archive
3c595 cards, bus master and collisions
daemon@ATHENA.MIT.EDU (Giuseppe Ciaccio)
Tue Jul 9 14:56:25 1996
Date: Tue, 9 Jul 1996 15:01:53 +0200 (MET DST)
From: Giuseppe Ciaccio <ciaccio@disi.unige.it>
To: linux-net <linux-net@vger.rutgers.edu>
I have a version of the 3c59x "Vortex" driver that exploits bus master
mode for transmission, and I use it to drive a 3c595 Fast Ethernet NIC.
Besides having observed no effect on FTP performance (but I was not expecting
any throughput improvement), I observe a collision frequency much higher
than without bus mastering.
Can anyone suggest me why the probability of frame collision should increase
when my NIC works in bus mastering mode?
Thanks
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Giuseppe Ciaccio phone: +39 10 353 661{6,3}
DISI - Universita' di Genova fax: +39 10 353 6699
via Dodecaneso, 35 mailto: ciaccio@disi.unige.it
16146 Genova, Italy http://www.disi.unige.it/person/CiaccioG/
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