Date: Tue, 11 Jun 1996 23:58:35 -0500 From: steve farrell <spfarrel@midway.uchicago.edu> To: freebsd-stable@freebsd.org Subject: Re: Kernel panic - double fault Message-ID: <199606120458.XAA06651@meno.uchicago.edu> In-Reply-To: Your message of "Wed, 12 Jun 1996 00:00:10 CDT." <199606120403.AAA23186@ns2.harborcom.net>
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i'm not sure if this problem is related to this, but i've been running a -stable i supped, well, i guess 2 days ago. i posted in -questions about how it would seem to run out of processes unexplainably after about 12 hours of single-user use. well, more recently it went down like a rock without a single error message while running netscape. i've since reverted to 2.1-R and i'll probably make a remark in a couple of days if that seems to have fixed the problems... in addition to my config file which i posted in -questions, one other thing to note is that i have a $12 NE2000 clone. i know linux had some huge problems with these things causing crashes -- how about freebsd? might this have caused the crash i experienced today? i've noticed that freebsd network performance is significantly slower than linux pre-2.0 with this card. for example, ftp from a sparc 1 maxes at 300 kb/sec, often slower, and rather unevely despite the fact that the sparc is about 2 feet away on a un-trafficked lan. with linux i was getting 550-600 kb/sec evenly. (sparc <-> another sparc seems to be around a meg/sec). i was also having trouble with linux crashing, and nfs timeouts... so i'm thinking there might be some unsavory interaction between the kernel and this card -- does this seem likely? (nothing in /var/log/messages -- is there a way to turn on more extensive logging in the kernel?) also -- if you think that this card might be the culprit, with what ISA card should i replace it? thanks much --- steve farrell >Well, the new (old) pmap.c seems to be holding up. The machine >previously crashed at least once every 24 hours. It has now been up >for over 48. Just to let you know that the pmap code seems to have >made the difference. > >On 9 Jun 96 at 17:54, David Greenman wrote: > >> >FWIW, our news server has been crashing about once a day with this >> >double fault as well. Next time it happens I'll look up the address >> > and forward it on. It was doing this before the mega-commit, so >> >after things got cleaned up I rebuilt but the machine still goes >> >down about once a day, usually during an expire. >> >> Please update your kernel to the "current" -stable. I just >> reverted the >> pmap code to what was in 2.1R due to possibly related problems. >> >> -DG > >Bradley Dunn <dunn@harborcom.net> >Harbor Communications -- www.haborcom.net >or something... >
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