Date: Sun, 17 May 1998 10:38:52 -0700 (PDT) From: Julian Elischer <julian@whistle.com> To: Jt <hometeam@techpower.net> Cc: questions@FreeBSD.ORG Subject: Re: sio driver Message-ID: <Pine.BSF.3.95.980517103625.17761E-100000@current1.whistle.com> In-Reply-To: <Pine.BSF.3.96.980517064519.240A-100000@techpower.net>
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On Sun, 17 May 1998, Jt wrote: > > Yeah I was trying for the 230000 I am isdn that was the whole > purpose of the 16650 to increase thoughput. > jkh mention that freebsd could handle 230 no problem just the 115000 > 16550 was the restriction. it runs in windows 95 fine on the 230000 > settings. If I where able to get no speed change I would stay at > 115000. Are you also isdn? > A you COULD fix it by recompiling the kernel with the HZ value set to 200 intead of 100. or you could do what we did which is to get a uart with 32 byte fifo's instead of 16. the trouble is that the serial devices are not REALLY interrupt driven, but run by the clock (it's a long story). 16 bytes at 230K is < 10mSec (the Hz ia 100Hz) julian To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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