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Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!msunews!uwm.edu!spool.mu.edu!caen!usenet.coe.montana.edu!bsd.coe.montana.edu!nate From: nate@bsd.coe.montana.edu (Nate Williams) Newsgroups: comp.os.386bsd.misc Subject: Re: How fast? [was: ... slugish ...] Date: 19 Dec 1994 01:15:09 GMT Organization: Montana State University, Bozeman Montana Lines: 42 Message-ID: <3d2mqt$iuq@pdq.coe.montana.edu> References: <1994Nov28.194617.18912@system9.unisys.com> <3bf6ou$pm7@wup-gate.wup.de> <MICHAELV.94Dec9223853@MindBender.HeadCandy.com> <3cs7rd$k1u@news.demos.su> NNTP-Posting-Host: bsd.coe.montana.edu In article <3cs7rd$k1u@news.demos.su>, Ivan Popov <pin@demos.su> wrote: >alexd@system9.unisys.com (Alex Dumitru) writes: >My remark about the compilation speed: > >I tried to compile same package (screen control libraries) >on the same computer (386/25, 4Mb RAM) >under FreeBSD-2.0 (generic kernel) >and under Demos-86 (real mode UNIX for i8086 [sic], using 640K mem > with /tmp in extended memory). > >The result: _user_ times used are almost the same (about 17 min) > _real_ times used are: 50 min under Demos-86, > 90 min under FreeBSD-2.0 >In both cases other activity in the system was reduced to the minimum - >no users, no activity of daemons. >The difference between user and real times was due to I/O and swapping. >(BTW in the case of Demos-86 all passes of the compiler and make itself >fit into 640K, hence almost no swapping) Port that compiler to FreeBSD and try it out. GCC is a *pig* (and that's being nice) and the major reason why development and performance sucks on 4MB machines. Between it and X makes running any of the free OS's diffuclt to run well on low-memory hardware. Now, if we could get lcc and mgr to become standardized...... *grin* If you didn't have to swap/page then I bet FreeBSD would have 'similar' performance to you real mode UNIX. However, give me access to your real-mode box, and I'll bet I can get root in less than 24 hours. ;-) This statement assumes that your real-mode unix was written and designed for all x86's, and does not take advantage of the HW protection features of the 386 or better processors and that I have access to the c-compiler. Nate -- nate@bsd.coe.montana.edu | FreeBSD dude and all around tech. nate@cs.montana.edu | weenie. work #: (406) 994-5980 | Unemployed, looking for permanant work in home #: (406) 586-0579 | CS/EE field.