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Date: Thu, 18 Jun 1998 17:27:36 +0300 From: Cristian Nicolae <cristi@cepes.ro> Reply-To: cristi@cepes.ro To: Michael Lausch <mla@gams.co.at> CC: linux-scsi@vger.rutgers.edu Michael Lausch wrote: > > I'm running 2.1.105 with the 5.0.18 driver. > > lilo.conf says > append "aic7xxx=ultra,verbose" > > boot output: > > (scsi0) <Adaptec AIC-7880 Ultra SCSI host adapter> found at PCI 6/0 > (scsi0) Wide Channel, SCSI ID=7, 16/255 SCBs > (scsi0) BIOS enabled, IO Port 0xd000, IRQ 9 > (scsi0) IO Memory at 0xe3000000, MMAP Memory at 0xc480a000 > (scsi0) Resetting channel > (scsi0) Downloading sequencer code... 413 instructions downloaded > scsi0 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.0.18/3.2.4 > <Adaptec AIC-7880 Ultra SCSI host adapter> > scsi : 1 host. > (scsi0:0:-1:-1) Scanning channel for devices. > (scsi0:-1:-1:-1) Allocating initial 30 SCB structures. > (scsi0:0:0:0) Using wide (16 bit) transfers. > (scsi0:0:0:0) Synchronous at 20.0MHz, offset 8. > Vendor: IBM Model: DCAS-34330W Rev: S65A > Type: Direct-Access ANSI SCSI revision: 02 > > As far as i know, drives with ultra/wide SCSI interface should do 40 > MByte/sec. So why is this disk running at 20Mbyte/sec? The Controller > BIOS is set up to do 40 MByte/sec on SCSI id 0. The disk shoudl do > ultra SCSI according to IBM's web pages. > Maybe that's a stupid question but how did you figure out that disk is running at 20Mbyte/sec In the log the bus frequence is 20 Mhz not 20 MByte. Do I miss something ? Cristian - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@vger.rutgers.edu
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