I have some vague thoughts on using SW_WATCHDOG and a hardware watchdog together. I think this could be useful but I am not sure how to implement this. The idea is this: timeout for SW_WATCHDOG is smaller than timeout for hw wd; when some freeze happens sw wd logic kicks in first, stops hw wd and produces either panic or ddb prompt; if the freeze is so severe that sw wd can't run (e.g. hardware is messed up badly) then hw wd performs its duty. I am mostly interested in having this in unattended mode where kernel dump could be useful for later analysis but the system should recover in reasonable time.
Suggestions, opinions? Thank you! -- Andriy Gapon _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
