Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site birtch.UUCP Path: utzoo!linus!decvax!ittatc!dcdwest!sdcsvax!sdcrdcf!trwrb!scgvaxd!felix!birtch!Oleg Kiselev (OLG) From: Oleg Kiselev@birtch.UUCP (OLG) Newsgroups: net.arch Subject: Re: 386 Architectural Description Message-ID: <82@birtch.UUCP> Date: Thu, 31-Oct-85 17:38:53 EST Article-I.D.: birtch.82 Posted: Thu Oct 31 17:38:53 1985 Date-Received: Sun, 3-Nov-85 15:10:06 EST References: <531@petfe.UUCP> Organization: Birtcher, Santa Ana, Ca. Lines: 21 In article <531@petfe.UUCP> bobp@petfe.UUCP (Dan Masi) writes: >> 32 entry on-chip paging cache (translation lookaside buffer) with >> a 98% hit rate for efficient paging >> ^^^^^^^^^^^^ >Does this mean that I will see a 98% cache hit rate for *all* programs >that I can run on this processor??? Hmmm... According to 386 specs, translation buffer maps 128K worth of 4K pages. Most small programs written for 8086/80286 systems had a 64K data segment (limit for most programmers who did not want to pay speed penalties for address decoding). For those programs 98% hit rate is quite reasonable. I guess 386 was tested running MS-DOS... Some habits never go away ....:-) -- Disclamer: My employers go to church every Sunday, listen to Country music, and donate money to GOP. I am just a deviant. ----------------------------------+ Don't bother, I'll find the door, "Only through a violent revolution| Oleg Kiselev. can the existing order be pre- |...!{trwrb|scgvaxd}!felix!birtch!oleg served..."-Perfect Student Union |...!{ihnp4|randvax}!ucla-cs!uclapic!oac6!oleg