Path: utzoo!attcan!uunet!husc6!mailrus!ames!ucsd!sdcc6!sdcc12!mp1 From: mp1@sdcc12.ucsd.EDU (Leroy Dorman) Newsgroups: comp.unix.microport Subject: Re: compilation speed with enough memory Summary: 386 not the same thing. Keywords: ram disk speed 286 386 Message-ID: <1027@sdcc12.ucsd.EDU> Date: 19 Jul 88 05:38:03 GMT References: <14622@santra.UUCP> Organization: University of California, San Diego Lines: 18 Adding a ramdisk to a 286 uPort box will probably not get the same performance enhancement that adding one to 386 uPort would. 386 uPort supports virtual memory so much of the compiler can page in/out whereas 286 must hold the whole thing or not at all. I don't know if the sbrk code is as dumb as that on V/286 but I doubt it. For a 286, it may (for compiles, at least) be better to allocate ram for program core instead of ramdisk. I would like to see performance specs of various ramdisk sizes on 286/ATs. Would be interesting. ------------------------------------------------------------ Eric Dorman Bele-"Are you blind!?" Scripps Institution "I'm black on the right side." of Oceanography "Loki is white on the right University of California "side. All his people are siolmd!eric@sdsioa.ucsd.edu "white on the right side."