18 messages in org.freebsd.freebsd-questionsRe: sio driver| From | Sent On | Attachments |
|---|---|---|
| Jt | May 16, 1998 10:50 am | |
| Greg Lehey | May 16, 1998 6:04 pm | |
| Julian Elischer | May 16, 1998 8:03 pm | |
| Jt | May 17, 1998 3:48 am | |
| Jt | May 17, 1998 7:30 am | |
| Jt | May 17, 1998 7:37 am | |
| Randy A. Katz | May 17, 1998 8:34 am | |
| Hans Huebner | May 17, 1998 10:27 am | |
| Julian Elischer | May 17, 1998 10:38 am | |
| Julian Elischer | May 17, 1998 10:39 am | |
| John Kelly | May 17, 1998 11:09 am | |
| Jt | May 17, 1998 12:37 pm | |
| John Kelly | May 17, 1998 1:01 pm | |
| J.A. Terranson | May 17, 1998 2:28 pm | |
| Greg Lehey | May 17, 1998 6:02 pm | |
| Jt | May 18, 1998 2:19 am | |
| Jt | May 18, 1998 3:07 am | |
| John Kelly | May 18, 1998 4:32 pm |
| Subject: | Re: sio driver | |
|---|---|---|
| From: | Julian Elischer (jul...@whistle.com) | |
| Date: | May 17, 1998 10:38:31 am | |
| List: | org.freebsd.freebsd-questions | |
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
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