also sprach Henrique de Moraes Holschuh <hmh@debian.org> [2004.04.09.1949 +0200]: > It won't hurt. But nmi_watchdog is only for usermode and > kernemode hangs. The NMI watchdog is useless against nasty bugs > (hw or sw) that make the hardware unstable. Yes, I have just discovered that. (Note that my new thread is about a different machine. I can't try the stuff you suggested until Wednesday, when I get back to Zurich. > I get about 101 NMIs per second on each CPU using nmi_watchdog=1. > HZ=100 in this machine, I suppose... This is a not-really-SMP > machine, with a single P4 HT processor. related, but not to the thread: what's that HZ stuff? I assumed it to be something like Hertz, but I could be wrong. However, ever since I switched to the 2.6 kernel, I get the "Wrong HZ, was 67; should be 100" or something like that messages occasionally. > The software watchdog will reboot your machine (and AFAIK it might > very well be using NMIs to do it, too). If you can use a chipset > watchdog, however, that's much better (e.g. the TCO timers in most > Intel systems, and _especially_ the IPMI watchdog in servers with > a baseboard controller worth something). I'll think about it. How much are these hardware watchdogs, and which one would you recommend? -- Please do not CC me when replying to lists; I read them! .''`. martin f. krafft <madduck@debian.org> : :' : proud Debian developer, admin, and user `. `'` `- Debian - when you have better things to do than fixing a system Invalid/expired PGP subkeys? Use subkeys.pgp.net as keyserver!
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