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On Sat, Feb 22, 2003 at 09:49:58AM +0100, Marc Haber wrote: > we use Linux to terminate ATM PVCs and to move the traffic coming in > on the ATM link to Ethernet. We have two parallel machines with > identical hardware (about two years old), in a Debian GNU/Linux setup > built in November 2002. Current kernel is 2.4.20-ac1, and the setup > hasn't been touched since December 2002. One of the machines does the > work, while the other is waiting to be activated in case of failure. > Max load is about 6 Mbit, the machines are mostly idle. At least I > won't call them loaded. > > A few days ago, the "active" machine has started spontaneously > freezing. The freezes don't happen at times with especially high or > low load, they don't happan during the same time of day. The freezes > are complete: > - no network respose on the ATM link > - no network response on the Ethernet link > - no response at all on the system console > - no error or panic messages on the console > - no response to Magic SysRq > - atsar doesn't show any strange patterns in CPU/memory usage > - syslog doesn't show anything strange > - mrtg doesn't show anything strange in network load > > Reset button is needed to revive the frozen box. In the mean time, we started experiencing the same behavior on routers that have only ethernet interfaces, a web server and my personal workstation. All machines run kernel 2.4.20-ac1, and downgrading to 2.4.19 seems to solve the problem in all cases. I am now pretty sure that I am not experiencing bad hardware. I am now running my personal workstation with 2.4.21-rc7, but cannot comment on that kernel at the moment. Are there any known stability issues with 2.4.20-ac1? Greetings Marc -- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Karlsruhe, Germany | lose things." Winona Ryder | Fon: *49 721 966 32 15 Nordisch by Nature | How to make an American Quilt | Fax: *49 721 966 31 29 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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