Date: Sun, 16 Nov 1997 02:41:41 -0800 (PST) From: asami@cs.berkeley.edu (Satoshi Asami) To: gibbs@plutotech.com Cc: hbarker@rhiannon.sm.dsms.com, hackers@FreeBSD.ORG, scsi@FreeBSD.ORG, aic7xxx@FreeBSD.ORG Subject: Re: AHC / SCSI UPDATE Message-ID: <199711161041.CAA01059@bubble.didi.com> In-Reply-To: <199711160511.WAA24691@pluto.plutotech.com> (gibbs@plutotech.com)
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Justin: * Sorry for not responding sooner, but I don't read this list regularly * anymore... Which list you are talking about? (I hope that's not scsi! :) * Remeber that it's not really the type of device that matters, but the * possibility of starvation. If you have lots of concurrent I/O going on * to multiple disks on a single chain, you can still experience this problem * (Hi Satoshi!). Yeah, we've seen it too. Lots of IBM DCHS drives on a couple of chains, lots of random I/O, and sooner or later we'll get the "timed out while idle" on one of the drives. (And then that drive spins down, which has been a headache for us for quite a while...however, recently Justin & co. have given us patches to fix this and we're testing it now.) Satoshi
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