Date: Thu, 08 Jun 2000 22:23:51 -0700 From: W Gerald Hicks <jhix@mindspring.com> To: Dennis <dennis@etinc.com> Cc: hackers@FreeBSD.ORG Subject: Re: if_dc in v4.0 - Forcing store and forward? Message-ID: <39407F67.8B217731@mindspring.com> References: <20000608000153.6AC291CE1@overcee.netplex.com.au> <200006081459.KAA24211@etinc.com>
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Dennis wrote: > > At 10:48 PM 6/7/00 -0700, W Gerald Hicks wrote: > >Peter Wemm wrote: > > > >> I suspect a generic chipset fault, or some design quirk that we are not > >> working around. Note that the windoze drivers for these devices put them > >> permanently in store-and-forward mode. if_de has the exact same problem on > >> all of the systems above. > > Well we never saw these problems in v3.4...so what changed? > > DB The chips vary widely, we experienced great behavioral differences between steppings. The 21143 was particulary worrisome, as were some of the 21140 variants. I definitely experienced tx underruns on FreeBSD 3.4 with a 21140A. Never saw them with a good old 21040 though. After I was told by Intel that they're killing the device off, we decided to stop developing boards with them and eliminated at least *that* source of aggravation ;-) -- Jerry Hicks jhix@mindspring.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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