Date: Fri, 6 Jun 1997 11:38:08 +0100 From: Bob Bishop <rb@gid.co.uk> To: freebsd-hackers@FreeBSD.ORG Subject: Re: Extremely poor interactive response under heave SCSI load Message-ID: <l03020900afbd97441c6f@[194.32.164.2]> In-Reply-To: <199706060811.KAA00771@ws6423.gud.siemens.at>
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Quick (and nasty) hack: in scsi/sd.c, if the device has been continuously busy for say > 1sec, just stop feeding it until it has drained. Better hack: if the oldest request on the device has been there for say > 1sec, stop feeding until that request has completed. None of this would be necessary if sequencers were a bit less totalitarian... -- Bob Bishop (0118) 977 4017 international code +44 118 rb@gid.co.uk fax (0118) 989 4254 between 0800 and 1800 UK
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