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Article #4performance of async interfaces
From: ucbvaxarpavaxwnj
Date: Thu, 27 Aug 1981 18:05
Date: Thu, 27 Aug 1981 18:05
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the able dmax works just fine. others are too new for final word on them, although many have had problems with early cs11s; emulex has fixed most of these problems. on vax, we see following overheads for output at 9600 baud with reasonably long lines (i.e. not all characters require special processing): dz-11 5% dh-11 3% this of a 11/780 processor. the dz-11 uses pseudo-dma. on 32/v pre pseudo-dma one 9600 baud line was > 100%, i.e. you couldn't drive one line at full 9600. bill joy
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Path: arc1-ca.pugleaf.net!utzoo!decvax!ucbvax!arpavax:wnj From: ucbvax!arpavax:wnj Newsgroups: NET.unix-wizards Subject: performance of async interfaces Date: Thu, 27 Aug 1981 18:05:44 +0000 Message-ID: <anews.Aucbarpa.124>