Date: Tue, 25 Apr 1995 11:33:16 -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.3.91.950425112844.8491A-100000@haven.uniserve.com> In-Reply-To: <199504190021.RAA00473@gndrsh.aac.dev.com>
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I recently picked up a Buslogic 946C, but I found that performance is very poor. Any tips on improving performance under FreeBSD? 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? 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 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)
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