Date: Tue, 25 Apr 1995 14:37:46 -0700 (PDT) From: Tom Samplonius <tom@haven.uniserve.com> To: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com> Cc: hackers@FreeBSD.org Subject: Re: Buslogic? Message-ID: <Pine.BSF.3.91.950425140955.11333A-100000@haven.uniserve.com> In-Reply-To: <199504251945.MAA10651@gndrsh.aac.dev.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Tue, 25 Apr 1995, Rodney W. Grimes wrote: > > I'm confused by the fact that is says "async only". The manual > > indicates that is can do synchronous transfers, and the disk info option in > > AutoSCSI says that all the disks support synchronous transfer. Sync > > negotiation and fast SCSI have been enabled as well. Is this a > > limitation of the driver? > > No, something is not set right on that card. I am using an older version > of the BIOS but below where it reports ``async only'' by card reports > sync. The card is telling FreeBSD that it is in async only mode: I don't see anyway of telling the BT946C to do async only. It appears that you can only disable sync for individual drives, and I've set that that Yes for every drive. Doing a "iozone 100" results in trasfers around 1.7meg per second. This is really sad, when the drives have a media transfer rate of 2.7 - 5.5 MB/s. > > > > bt0: Bt946C/ 0-PCI/EISA/VLB(32bit) bus > > bt0: reading board settings, busmastering, int=11 > > bt0: version 4.25J, async only, parity, 32 mbxs, 32 ccbs > > ^^^^^^^^^^ card is not in sync mode :-( > > bt0: targ 0 async > > bt0: targ 1 async > > bt0: targ 2 async > > bt0: Enabling Round robin scheme > > bt0 at 0xe800 irq 11 on eisa slot 14 > > bt0 waiting for scsi devices to settle > > (bt0:0:0): "DEC DSP3210S X442" is a type 0 fixed SCSI 2 > > sd0(bt0:0:0): Direct-Access 2049MB (4197520 512 byte sectors) > > (bt0:1:0): "DEC DSP3210S X442" is a type 0 fixed SCSI 2 > > sd1(bt0:1:0): Direct-Access 2049MB (4197520 512 byte sectors) > > (bt0:2:0): "DEC DSP3210S X442" is a type 0 fixed SCSI 2 > > sd2(bt0:2:0): Direct-Access 2049MB (4197520 512 byte sectors)
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.3.91.950425140955.11333A-100000>