Date: Mon, 23 Feb 1998 13:01:11 -0700 From: "Justin T. Gibbs" <gibbs@plutotech.com> To: Chris Dillon <cdillon@wolves.k12.mo.us> Cc: "David O'Brien" <obrien@NUXI.com>, dg@root.com, "Justin T. Gibbs" <gibbs@plutotech.com>, scsi@FreeBSD.ORG Subject: Re: very slow scsi performance Message-ID: <199802232004.NAA08037@pluto.plutotech.com> In-Reply-To: Your message of "Mon, 23 Feb 1998 11:31:53 CST." <Pine.BSF.3.96.980223112935.19806A-100000@duey.hs.wolves.k12.mo.us>
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>> > >> But CAM means current. Downgrading production servers to current is >not >> > >> an option. >> > > >> > >CAM works for wcarchive and many of Satoshi's "production" systems. It >> > >is possible to port CAM to 2.2 as well since that is how wcarchive is >> > >using it. >> > >> > I should mention that what I'm using on there has been quite stable as >> > well. >> >> Any diffs available? I could probably scrounge up diffs for the version of CAM that wcarchive is running. It would probably be better to simply generate them again once Ken and I release the next snapshot for current. CAM depends on just a few features of current that could be brought into -stable. Perhaps after 2.2.6 is cut we can do that: 1) New timeout interface 2) New buffer queuing routines that handle the B_ORDERED flag. 3) Interrupt driven config hooks. 4) cam and vm software interrupt handlers 5) bus dma code. Getting even just a few of these pulled over would greatly simplify the process of getting CAM to run under stable. >I would certainly be happy to test out the CAM code in -stable as long as >it doesn't require too much programming experience. Applying some diffs >and making a new kernel (and/or world) is easy enough for me. It would be >really nice to see it in 2.2.6, but I'm just dreaming there. Maybe as an >experimental package, at least? CAM needs more controller support before it can go into any release. -- Justin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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