Date: Sat, 03 Jan 2004 15:36:44 -0700 (MST) From: "M. Warner Losh" <imp@bsdimp.com> To: arch@freebsd.org Subject: Simple patch: Make DFLTPHYS an option Message-ID: <20040103.153644.107852018.imp@bsdimp.com>
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My brother was talking to me about the problems he was having with scanners. Turns out that he needed to incrase DFLTYPHYS to 128k to make it work. I'd like to make this a simple option, but wanted to ask people about it first, for both DFLTPHYS and MAXPHYS. This would be an experts only option, since you can do bad things with some drivers (eg, aha can't do more than 64k of physio at a time, and bad things may happen if you try > 128k). The folks on IRC cautioned that this is not for the feign of heart, since there's 'issues' with physio, MAXPHYS, etc. Comments? Warner P.S. Here's a trivial patch to implement this: ==== //depot/user/imp/newcard/conf/options#70 - /dell/imp/p4/newcard/src/sys/conf/options ==== @@ -470,10 +470,12 @@ DEBUG opt_global.h DEBUG_LOCKS opt_global.h DEBUG_VFS_LOCKS opt_global.h +DFLTPHYS opt_global.h DIAGNOSTIC opt_global.h INVARIANT_SUPPORT opt_global.h INVARIANTS opt_global.h LOOKUP_SHARED opt_global.h +MAXPHYS opt_global.h MCLSHIFT opt_global.h MSIZE opt_global.h REGRESSION opt_global.h
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