Date: 29 Nov 2000 15:46:52 -0500 From: Nat Lanza <magus@cs.cmu.edu> To: mjacob@feral.com Cc: Tom Samplonius <tom@sdf.com>, Chuck McCrobie <mccrobi@aplcenMP.apl.jhu.edu>, freebsd-scsi@FreeBSD.ORG Subject: Re: RFC 2143 (IP over SCSI) Support in FreeBSD Message-ID: <uocsnoay08z.fsf@hurlame.pdl.cs.cmu.edu> In-Reply-To: Matthew Jacob's message of "Wed, 29 Nov 2000 12:30:57 -0800 (PST)" References: <Pine.LNX.4.21.0011291221080.1337-100000@zeppo.feral.com>
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Matthew Jacob <mjacob@feral.com> writes: > Huh- what was the CPU utilization? I suspect higher than native, but > CPU speed arguments are more or less now like what memory > utilization arguments were ten years ago (obsoleted by having > enough- i.e., requiring lots of memory or CPU isn't a problem if > it's cheaply available). We aren't doing much CPU measurement at the moment; our current interests lie more towards network behaviour -- congestion and routing and the like -- than towards integrating iSCSI into systems. However, simple empirical stare-at-the-machine stuff shows that the client's CPU doesn't seem to be close to being pegged. The server's closer to being pegged, but we don't care much about that -- that's the part that's easiest to throw hardware at. And yeah, you're right about the availability. The folks who care most about high-speed SANs can easily afford fast CPUs for client machines. > Well, we'll see whether the s/w portions of Fibre Channel (e.g., the > SAN domain stuff) gets to be usable within IP over SCSI. I hope so. Storage management is irritating and hard, and I'd rather not see people reinvent the world yet again. --nat -- nat lanza --------------------- research programmer, parallel data lab, cmu scs magus@cs.cmu.edu -------------------------------- http://www.cs.cmu.edu/~magus/ there are no whole truths; all truths are half-truths -- alfred north whitehead To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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