Messages in this thread | | | From | "Terry Katz" <> | Subject | RE: Linux 2.2.2pre4 SMP crash (wait_on_bh) | Date | Sat, 20 Feb 1999 20:03:44 -0500 |
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We too run an AIC7xxx, and an EtherExpress Pro 100 .. Our system runs as both a medium to high traffic web server, and mid traffic database server. We had a crash once during a 'local' access to the database, which was a couple of hours after a previous crash ('normal' crashes occur once every 5-6 days), but that may have been due to some remote access traffic ..
-Terry
> On Sat, 20 Feb 1999, Jordan Mendelson wrote: > > > Andrea Arcangeli wrote: > > > > > > On Sat, 20 Feb 1999, Terry Katz wrote: > > > > > > >I've experienced the same problem... 2.2.1, and 2.2.2pre2... > There have been > > > >a number of people who have brought this up... No one has really been > > > >helpful in an answer as to how to fix. Linus suggested > 2.2.2pre2 to me a > > > >short time ago, but just recently it happened with that so ... > > > > > > Are you using the shaper. The shaper had a SMP race that could cause > > > exactly this kind of SMP hang. I just fixed it and you can > find my fix in > > > both linux-kernel and linux-net. > > > > No traffic shaper here.. my current running config is: > > No shaper here, either. Because I noticed that the traces seem to be the > same and each has tcp_v4_hash(), and because I noticed that a machine we > have here with identical hardware that has less net traffic hasn't ever > had the problem, I ran some tests with multiple processes connecting and > closing thousands of TCP sockets simultaneously on my SMP celeron box at > home. It's been going for an hour or so now, and I haven't been able to > reproduce anything. > > I noticed you are using a buslogic SCSI controller -- the machine that is > having problems here is using an AIC7xxx, so perhaps the low level driver > isn't the problem. What Ethernet card are you using? I noticed > "EEPRO100" in your conf, which is what we are using here. > > Are you running a lot of net traffic through the machine? This machine > that has had the problem 4 times in the last month or so sends ands > receives about 500,000 packets per hour. It sends and receives mail, > handles POP3 clients, runs a big nameserver, and has a few people logged > in occasionally to read mail. > > Hmm...*ponder* I was testing sockets locally. Perhaps it has to go over > the NIC... > > Simon- > > | Simon Kirby | Systems Administration | > | mailto:sim@netnation.com | NetNation Communications | > | http://www.netnation.com/ | Tech: (604) 684-6892 | > >
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