Date: Mon, 22 Mar 1999 13:46:56 -0700 (MST) From: "Kenneth D. Merry" <ken@plutotech.com> To: alvaro@cantv.net (Alvaro Carvajal) Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: Tag Enable on an Adaptec 2944UW Message-ID: <199903222046.NAA68154@panzer.plutotech.com> In-Reply-To: <3.0.1.32.19990322145829.0302c7a0@pop.cantv.net> from Alvaro Carvajal at "Mar 22, 1999 2:58:29 pm"
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Alvaro Carvajal wrote... > Hello. > > We have setup various FreeBSd boxes running 2.2.6, connected > to BoxHill Turbo 5300 RAID Systems. We're using Adaptec 2944UW > scsi cards to connect to the RAID Systems and have the > following options set on the kernel file: > > options AHC_TAGENABLE > options AHC_ALLOW_MEMIO > > We were looking for an option to control the number of scsi > commands that can be queued. > > I know that in Solaris 2.6, you can do it by modifying the > /etc/system file, adding this line: > > set sd:sd_max_throttle = 32 > > Is there a way to do the same on FreeBSD? Sort of, although it's a hard coded value in the sd driver. It would be a lot easier if you upgrade to FreeBSD 3.1. FreeBSD 3.1 will queue as many commands to the RAID array as it can handle. Ken -- Kenneth Merry ken@plutotech.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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