Date: Wed, 07 Jun 2000 16:40:33 -0700 From: Mike Smith <msmith@freebsd.org> To: Dennis <dennis@etinc.com> Cc: hackers@FreeBSD.ORG Subject: Re: if_dc in v4.0 - Forcing store and forward? Message-ID: <200006072340.QAA01962@mass.cdrom.com> In-Reply-To: Your message of "Wed, 07 Jun 2000 16:44:57 EDT." <200006072045.QAA21613@etinc.com>
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> > Running a Dlink quad card (570TX) in 100Mb/s full dup mode the driver > complains about underruns for awhile and then ultimately sets > store_and_forward which seems to make it work. > > Is there a way to force this easily? It seems that it should certainly be > the default if full dup 100 mode is detected as the other settings fail > quite easily on rather trivial activities. > > should this card be used with the if_dc or if_de driver? Both seem to probe > it successfully, although both drivers have the same (annoying) underrun > problem (that wasnt a problem or at least not screen-verbalized in 3.4). Transmit underrun is usually caused by another peripheral hogging the PCI bus; either a poorly configured card with an excessive latency value, or a misconfigured card (due to BIOS bugs), or a card that otherwise ignores the PCI latency rules, or a system with too many busy busmaster cards. > Dennis > Emerging Technologies, Inc. > ---------------------------------------------------------------------------- > --------- > > > > http://www.etinc.com > ISA and PCI T1/T3/V35/HSSI Cards for FreeBSD and LINUX > Multiport T1 and HSSI/T3 UNIX-based Routers > Bandwidth Management Standalone Systems > Bandwidth Management software for LINUX and FreeBSD > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message > -- \\ Give a man a fish, and you feed him for a day. \\ Mike Smith \\ Tell him he should learn how to fish himself, \\ msmith@freebsd.org \\ and he'll hate you for a lifetime. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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