Date: Thu, 18 Aug 2016 21:28:57 -0600 From: Warner Losh <imp@bsdimp.com> To: Julian Elischer <julian@freebsd.org> Cc: John Baldwin <jhb@freebsd.org>, src-committers <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org> Subject: Re: svn commit: r304187 - in head: . share/man/man4 sys/conf sys/dev/mcd sys/modules sys/modules/mcd Message-ID: <CANCZdfpY9S8ErwD6b7pHeH%2BRVF9JEszBb7zJ9m-wybfBr1ujAg@mail.gmail.com> In-Reply-To: <0d6c2e45-e4da-9bb7-a50c-212135d9ac4f@freebsd.org> References: <201608152038.u7FKc2NL026330@repo.freebsd.org> <2065331.KaGOSftJhd@ralph.baldwin.cx> <0d6c2e45-e4da-9bb7-a50c-212135d9ac4f@freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thu, Aug 18, 2016 at 12:50 AM, Julian Elischer <julian@freebsd.org> wrote: > On 16/08/2016 4:54 AM, John Baldwin wrote: >> >> On Monday, August 15, 2016 08:38:02 PM John Baldwin wrote: >>> >>> Author: jhb >>> Date: Mon Aug 15 20:38:02 2016 >>> New Revision: 304187 >>> URL: https://svnweb.freebsd.org/changeset/base/304187 >>> >>> Log: >>> Remove the mcd(4) driver for Mitsumi CD-ROM players. >>> This is a driver for a pre-ATAPI ISA CD-ROM adapter. As noted in >>> the manpage, this driver is only useful as a backend to cdcontrol to >>> play audio CDs since it doesn't use DMA, so its data performance is >>> "abysmal" (and that was true in the mid 90's). >> >> No one stepped up to test patches for it either when I last posted patches >> to >> convert it from timeout(9) to callout(9). I have a few more drivers that >> are >> both very old and that people have no business using in 12 (think ISA >> adapters that don't do DMA and can't be used with pccard) that I will be >> removing over the next little while. I brought up a list of drivers on >> arch@ >> a couple of years ago and the conversation drifted off into the weeds >> about >> trimming GENERIC, etc. No one objected to the specific drivers I listed >> though (and I got a few pleas of "please remove"). If someone shows up >> desperately clutching an ISA adapter they can always dig up the source >> from >> svn and deal with forward porting it for whatever API changes have >> happened >> since it was removed. > > > I would imagine any machine still holding one of these probably has not > enough memory to run FreeBSD. > > would we still run in 2MB? With insane levels of tuning, we can run in 32MB userland that can do things. Even 64MB is tight w/o some tuning. 16MB is almost certainly right out except for very specialized situations. 2MB? We can't even load the loader in that :(. Oh, and all these memory configs are only possible if you tweak the loader's block cache... Warner
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CANCZdfpY9S8ErwD6b7pHeH%2BRVF9JEszBb7zJ9m-wybfBr1ujAg>