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Date:      Fri, 14 Aug 1998 08:56:53 -0400 (EDT)
From:      Bill Paul <wpaul@skynet.ctr.columbia.edu>
To:        bazilio@monitord.vrn.ru (Vasily V. Grechishnikov)
Cc:        hackers@FreeBSD.ORG
Subject:   Re: Some errors in XL driver ?
Message-ID:  <199808141256.IAA29923@skynet.ctr.columbia.edu>
In-Reply-To: <000e01bdc741$f992efc0$0a64a8c0@baz_station.monitord.vrn.ru> from "Vasily V. Grechishnikov" at Aug 14, 98 09:11:20 am

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Of all the gin joints in all the towns in all the world, Vasily V. 
Grechishnikov had to walk into mine and say:
 
> -----Original Message-----
> From: David Greenman <dg@root.com>
> To: Vasily V. Grechishnikov <bazilio@monitord.vrn.ru>
> Cc: freebsd-hackers@FreeBSD.ORG <freebsd-hackers@FreeBSD.ORG>
> Date: 13 августа 1998 г. 17:01
> Subject: Re: Some errors in XL driver ?
> 
> 
> >>Now my 3c905B works nicely.
> >>netstat -ni after applying patch listed below:
> >>Name  Mtu   Network       Address            Ipkts Ierrs    Opkts Oerrs
> >>Coll
> >>xl0   1500  <Link>      00.10.4b.06.a7.55     9083     4     4018  1565
> >>332
> >
> >   1565 output errors? That doesn't look so nice to me...
>     Ueaah ! I confused !
>     We haven't any serious transmit errors, because I
> didn't seen any error message like xl0: watchdog timeout.
> After analyzing if_xl.c I understood source of this big Oerrs
> count: as output errors driver treated xl_stats.tx_deffered, I
> guess number of deffered transmitted frames. After manually
> ifconfig'uring xl0 interface with media/mediaopt or after
> pacthing I seen performance impact on this NIC 650Kb/s with
> NE2000 as peer. Also I'm not feel delays due to recieve errors,
> but before telnet from 3c905 box looks like busy
> ppp connection :-( .

So you're saying it works, but it doesn't work? Wait. Is this really
a 3c905 and not a 3c905B? If so, then please try the newest driver at
www.freebsd.org/~wpaul. I did find a problem with performance on
10Mbps links. Even if you're not seeing watchdog timeouts, it may be
worth a try.
 
>     One suspicuous thing: I tried to test this NIC in times of
> our network inactivity but we has big number of collisions:
> 250, 332, 400 ! It's not good !

The driver adds up single collisions, late collisions and multiple
collisions into the one counter. I also see a lot of collisions on
my 3c900 on a 10base2 network.

-Bill

-- 
=============================================================================
-Bill Paul            (212) 854-6020 | System Manager, Master of Unix-Fu
Work:         wpaul@ctr.columbia.edu | Center for Telecommunications Research
Home:  wpaul@skynet.ctr.columbia.edu | Columbia University, New York City
=============================================================================
 "It is not I who am crazy; it is I who am mad!" - Ren Hoek, "Space Madness"
=============================================================================

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