Greg 'groggy' Lehey wrote: >On Tuesday, 20 July 2004 at 11:41:52 +0900, Hidetoshi Shimokawa wrote: > > >>(sorry for resending) >> >>At Sun, 18 Jul 2004 21:04:53 +0100, >>Doug Rabson wrote: >> >> >>>>2) Is dcons usable after a panic (ie, DDB or KDB_TRACE)? Or is it >>>> only usable for remote-gdb? >>>> >>>> >>>Dcons provides two full duplex streams - one for console and one for >>>gdb. You can use DDB on the console just like normal. >>> >>> >>It's designed for such panic/debugging situation. >>Actually, it's rather inefficient for usual situation >>but the speed of FireWire hide the problem ;-) >> >> > >I think that the most spectacular use of firewire is debugging a >completely hung system. If you've already attached, the debugger can >still access the memory of a system which isn't reacting *at all*. >Obviously you can't continue execution, but just seeing what's in >memory is a great advantage. > >On the other hand, it was my understanding that marcel's new kernel >debugging framework broke firewire debugging. What's the current >status there? > He helped "Mr Firewire" get it going again the next day... > >Greg >-- >Note: I discard all HTML mail unseen. >Finger grog_at_FreeBSD.org for PGP public key. >See complete headers for address and phone numbers. > >Received on Tue Jul 20 2004 - 23:04:10 UTC
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