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Date:      Tue, 24 Apr 2001 15:58:30 -0400
From:      Jason Andresen <jandrese@mitre.org>
To:        "A. Smith" <tonys@loa.com>
Cc:        Mobile FreeBSD <freebsd-mobile@freebsd.org>
Subject:   Re: ep0 crawling
Message-ID:  <3AE5DAE6.2B7E2F4E@mitre.org>
References:  <00cf01c0ccf5$fcc69360$3eb4a8c0@statix>

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"A. Smith" wrote:
> 
> Hi all -
> 
> I have a 3com 10baseT pccard NIC that is having some speed issues. I'm
> thinking it's hardware related, but i'm not convinced just yet, where it's a
> brand new card. It is one of 2 cards in my IBM Thinkpad, which is set up as
> a firewall/router for my DSL connection:
> <dmesg clip>
> pccard: card inserted, slot 0
> pccard: card inserted, slot 1
> ed0 at port 0x300-0x31f irq 3 slot 0 on pccard0
> ed0: address 00:e0:98:7c:01:dd, type Linksys (16 bit)
> ep0: <3Com Etherlink III 3C589> at port 0x240-0x24f irq 5 slot 1 on pccard1
> ep0: Ethernet address 00:60:08:de:a7:5f
> 
> When the card is used as the internal interface, I get ungodly poor ping to
> my internal machine, ranging from 2000-6000. I get around 20,000-30,000 when
> using the card as the external interface. Pretty rough...kinda hard to
> browse with a ping like that. I was hoping this might be something someone
> has heard of before. It only affects the one card.
> 

Well, I usually see that when I have an interrupt conflict.  IIRC the ep
driver would tend to return pings once every 3000ms or something very
regular (driver timeouts I assumed).  Once I got the IRQ configured
correctly (It can't share, so make sure you only list free interrupts in
your pccard.conf file).


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