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Newsgroups: comp.os.386bsd.questions Path: sserve!newshost.anu.edu.au!munnari.oz.au!spool.mu.edu!howland.reston.ans.net!xlink.net!subnet.sub.net!flatlin!pilhuhn!hwr From: hwr@pilhuhn.sub.org (Heiko W.Rupp) Subject: Re: Is com performance improved under NetBSD 0.9 ? References: <28id7d$c8r@goodman.EECS.Berkeley.EDU> <CEA7HD.2IH@flatlin.ka.sub.org> Date: Thu, 7 Oct 1993 12:29:27 GMT Organization: The home of the Pilhuhn Message-ID: <CEJ1D4.3y7@pilhuhn.sub.org> Lines: 18 bad@flatlin.ka.sub.org (Christoph Badura) writes: >>I have been using NetBSD 0.8 for some time now, and am very happy with it, >>except for one thing: the performance of serial i/o. >Serial performance has increased a lot with NetBSD-0.9. It's quite >possible to run at 38400 bps on a 386/40 and only get a couple of silo >overflows. However the system on which we (Heiko and me) do this We naturally have fifos installed to acheive this - even when running two 38400 bps lines at the same time, we don't get too much silo overflows. Compiling the kernel with -O2 and DUMMY_NOPS also decreased the number of overflows. -- Heiko W.Rupp Gerwigstr.5 D-76131 Karlsruhe +49 721 9661521 "[The] Internet is so big, so powerful and pointless that for some people it is a complete substitute for life." -- Andrew Brown