Date: Tue, 24 Aug 1999 11:35:26 +1000 (EST) From: George Michaelson <ggm@dstc.edu.au> To: freebsd-current@freebsd.org Subject: SIO "lost interrupt" status in current? Message-ID: <199908240135.LAA15228@azure.dstc.edu.au>
next in thread | raw e-mail | index | archive | help
I've done a quick scan of the lists and GNATS db, and see some evidence that in the last 1-2 years there has been a thread of people who see bad sio performance, coupled to any of X, Audio and APM (including bios APM setting). The PRs most relevant (but only marginally IMHO) are: http://www.freebsd.org/cgi/query-pr.cgi?pr=8940 http://www.freebsd.org/cgi/query-pr.cgi?pr=8981 Comments in the searchable mail indexes which are relevant are: http://www.freebsd.org/cgi/getmsg.cgi? \ fetch=4574708+4578214+ \ /usr/local/www/db/text/1999/freebsd-current/19990509.freebsd-current http://www.freebsd.org/cgi/getmsg.cgi? \ fetch=4631267+4632671+ \ /usr/local/www/db/text/1999/freebsd-current/19990509.freebsd-current http://www.freebsd.org/cgi/getmsg.cgi? \ fetch=393430+395069+ \ /usr/local/www/db/text/1999/freebsd-current/19990614.freebsd-current I'm on a P200, 16550, may do PnP for devices, PPP over 28.8kbps modem to a Cisco 3640 ISDN digital modem box and see hundreds of lost interrupts per hour. They cause extreme lossage of download speed to FTP/SSH/HTTP but have not creamed the IP layer across the board since immediately after one I can use a non-live telnet/ssh window fine. The hung session typically takes 30sec to come live again at a reduced window size of course. I've tried the LINT listed sio flags to enable extended FIFO (which didn't work for me, presumably because I'm not on a 16550A) and fast recovery to no avail. I have yet to confirm if I have APM disabled in BIOS, or check if removing PnP or soundcard drivers make any difference. X is the prime reason I use this box (@home access) so "don't do that" may not be an option for X11. The other stuff while annoying, might be viable fixes and I will explore them if somebody can give me clear advice here. I'm actually pretty sure it happens even without X11 live. This worries me! changing the modem serial speed down from 57600 through 33600 to 19200 made no difference. This also worries me. New-Bus is not new any more. If this is a lingering problem with new-bus then it should be documented and stomped on! Can I get some kind of semi-canonical reply from the knowledgable why this problem exists? I appreciate it may be low prio, I'm just concerned its dropped off the table of known problems/issues and that folk memory of possible fixes is also scattered. Having FreeBSD non-functional for dialup from home seems pretty unlikely: I must be doing something wrong locally. I can feel it in my bones... cheers! -George To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199908240135.LAA15228>