Date: Fri, 4 Aug 2000 14:35:14 -0400 (EDT) From: Andrew Gallatin <gallatin@cs.duke.edu> To: Mike Smith <msmith@freebsd.org> Cc: David Bushong <david@bushong.net>, freebsd-scsi@freebsd.org Subject: Re: Any solution to 29160 problems? Message-ID: <14731.2604.380507.580044@grasshopper.cs.duke.edu> In-Reply-To: <200008032348.QAA05189@mass.osd.bsdi.com> References: <20000803163322.B18478@bushong.net> <200008032348.QAA05189@mass.osd.bsdi.com>
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Mike Smith writes: > > Very sorry. More detail: > > > > 4x IBM 36ZX (10k rpm, 36GB U160 LVD) > > 4.1-RELEASE > > SuperMicro 370DL3 Motherboard > ... > > pcib0: <RCC LE host to PCI bridge> on motherboard > > This more or less directly matches a problem that Dell were seeing with > the same disks and motherboard chipset; at that point Justin was thinking > that it might even be chipset related. I'm not sure what the current > feeling is. We don't have IBM drives, but for what its worth, the same chipset (which is used in Dell's PowerEdge servers) works just dandy with adaptec 160 controllers & Cheetahs. I backported Justin's recent U160 ahc driver changes to 4.0-RELEASE & I've been able to max the scsi bus out at over 135MB/sec with 4 ST318404LC cheetahs. (This was using a 29160 controller; the pe4400's onboard 7899 is on a 32-bit pci bus -- oops!). We've been running for months with the on-board aic7899 using 4.0-RELEASE's standard ahc driver (u2 speeds only) & beating on the disks very hard. I have yet to see a complaint from the scsi layer. Drew ------------------------------------------------------------------------------ Andrew Gallatin, Sr Systems Programmer http://www.cs.duke.edu/~gallatin Duke University Email: gallatin@cs.duke.edu Department of Computer Science Phone: (919) 660-6590 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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