Date: Thu, 16 Oct 1997 09:52:27 -0100 (GMT) From: Remy NONNENMACHER <remy@synx.com> To: Stephen Comoletti <rugose@www.delanet.com> Cc: freebsd-questions@freebsd.org Subject: Re: Strange IDE perfs Message-ID: <Pine.A32.3.91.971016094058.40734I-100000@rs1> In-Reply-To: <199710160223.WAA28147@www.delanet.com>
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On Wed, 15 Oct 1997, Stephen Comoletti wrote: > Is the quantum drive one of the new fireball Super ATA drives? If so, you > will not get the performance off a standard eide motherboard interface. > Those drives are made to work with the Ultra ATA cards, like the Promise > Ultra33 (see the web page for Promise technology). They still work under > the older ide interface but suffer a large performance hit. > Can the Intel PIIX4 Ultra-dma capable be qualified as 'standard eide motherboard interface' ? What i can't understand is using the SAME disk, with the SAME chipset but with the 2.2.2-RELEASE gives me about ten times more perfs then with the 3.0SNAP. The 2.2.2-RELEASE doesn't do more then identifiying the PIIX as a 'storage device', but the 3.0 comes with a bunch of device initialisation concerning pci_ide devices. (and the PIIX is tested and recognized correctly). The Quantum disk is Udma capable and the bios claims it as been initialized as. Do i missed something in the config options ? > Steve > > ---------- > > From: Remy NONNENMACHER <remy@synx.com> > > To: freebsd-questions@FreeBSD.ORG > > Subject: Strange IDE perfs > > Date: Wednesday, October 15, 1997 10:05 PM > > > > > > Hello, > > > > I installed a 3.0-971012-SNAP release on a machine (AMD K6/200 - Asus > TX97E) > > and expected impressive IDE perfs. BUT, surprise !! Comparatively to a > > 2.2.2-RELEASE, running on a K6/233, same card (TX97E), I can't get more > than > > 1 MByte/s from a Quantum Udma 4.3 Gig. My 2.2.2 gives me about 8MBytes/s > with > > the same disk. (Note: i tried flags 0x80FF and 0xA0FF on wdc def and got > no > > diffs). > > > > Any idea ? > > > > TIA for replies. > > > > PS : the ide_pci chipset is a PIIX4 Intel. >
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