Date: Fri, 16 Aug 2002 17:11:28 +0200 From: Matthias Andree <matthias.andree@gmx.de> To: freebsd-stable@freebsd.org Subject: Re: Unsupported ATA controller - what's needed to make it supported? Message-ID: <m33ctebzz3.fsf@merlin.emma.line.org> In-Reply-To: <5.1.0.14.2.20020816234804.00b10018@ocean.hkr.se> ("J. 'LoneWolf' Mattsson"'s message of "Sat, 17 Aug 2002 00:33:21 %2B1000") References: <5.1.0.14.2.20020816234804.00b10018@ocean.hkr.se>
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"J. 'LoneWolf' Mattsson" <lonewolf-freebsd@earthmagic.org> writes: > 1) Have I missed something obvious that's causing this really poor > performance? I already have "hw.ata.wc=1" so that wouldn't be it... I > have my old slow drive on its own channel so as to not slug down my new > drive.. I'm using the "high density" proper ribbon cable for the new > drive.. The ATA controller isn't sharing an IRQ... Anything else? Is my > old P120 simply too old to cope, or what? Well, expect no PIO wonders of a P-120, but DMA should be reasonably fast, like 10 MB/s or somesuch, not just 2 (at least, that's what I get out of a IBM DPTA drive on a PII/266 with PIIX3 with Linux 2.4, which only does mdma2, which I presume is the same as WDMA2). > 2) Not being familiar with the workings of the ata(4) driver or driver > internals in general, what information is needed to make this controller > fully supported? Is it information that I can gather, or is there a need > for vendor specific information? The question is: what FreeBSD version are you currently using? -- Matthias Andree To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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