9fans archive / 1998 / 08 / 3 / prev next From: Russ Cox rsc@pla... Subject: [9fans] PC's 16MB SEGMAPSIZE limitations. Date: Sat, 1 Aug 1998 15:33:54 -0400 This should be a FAQ. ------ forwarded message follows ------ >From cse.psu.edu!owner-9fans Wed Oct 29 00:48:31 EST 1997 Received: from cse.psu.edu ([130.203.3.50]) by plan9; Wed Oct 29 00:48:31 EST 1997 Received: from localhost (majordom@localhost) by cse.psu.edu (8.8.7/8.7.3) with SMTP id AAA06748; Wed, 29 Oct 1997 00:48:11 -0500 (EST) Received: by claven.cse.psu.edu (bulk_mailer v1.5); Wed, 29 Oct 1997 00:48:03 -0500 Received: (from majordom@localhost) by cse.psu.edu (8.8.7/8.7.3) id AAA06708 for 9fans-outgoing; Wed, 29 Oct 1997 00:47:57 -0500 (EST) X-Authentication-Warning: claven.cse.psu.edu: majordom set sender to owner-9fans using -f Received: from smtp1.fas.harvard.edu (root@smt... [140.247.30.81]) by cse.psu.edu (8.8.7/8.7.3) with ESMTP id AAA06704 for <9fans@cse...>; Wed, 29 Oct 1997 00:47:53 -0500 (EST) From: rsc Received: from p9rsc (rcox.student.harvard.edu [140.247.81.214]) by smtp1.fas.harvard.edu with SMTP id AAA06521; Wed, 29 Oct 1997 00:47:52 -0500 (EST) Message-Id: <199710290547.AAA06521@smt...> To: cse.psu.edu!9fans Date: Wed, 29 Oct 1997 00:43:58 -0500 Subject: re: [9fans] How much memory does it require ... Sender: cse.psu.edu!owner-9fans Reply-To: cse.psu.edu!9fans Precedence: bulk This got tossed around two years ago, and I think the resolution was that you could change SEGMAPSIZE in pc/mem.h and all would be fine. The two attached messages contain the necessary bits I think. Nigel Roles said once that 8l uses 20MB to link ghostscript without any printer drivers. Russ --- forwarded messages follow --- From cse.psu.edu!9fans-outgoing-owner Thu Nov 2 13:36:19 EST 1995 From: "G. David Butler" <gdb@dbS...> To: 9fans@cse... Subject: Re: 386 maximum segment size of 16Mb Sender: owner-9fans@cse... Reply-To: 9fans@cse... I hate replying to my own mail, but I guess I wasn't finished... :-) >The real question, has anybody looked into increasing this limit? (look >in /sys/src/9/pc/mem.h, SEGMEMSIZE, I think, set to 16.) Make that SEGMAPSIZE. Also several of the machines have this in mem.h: #define SEGMAPSIZE 64 /* 16 is for wooses */ This would imply that all is necessary is to change 16 to 64 in pc/mem.h, but that would be too simple... Thanks again. From cse.psu.edu!9fans-outgoing-owner Thu Nov 2 13:59:19 EST 1995 From: philw@pla... To: 9fans@cse... Subject: Re: 386 maximum segment size of 16Mb Sender: owner-9fans@cse... Reply-To: 9fans@cse... changing SEGMAPSIZE works fine. It incurs overhead allocated Segment structures so 16 seemed reasonable for a terminal. We really dont use PC's to compile.