Date: Sat, 15 Jul 2006 00:27:40 -0300 (ADT) From: User Freebsd <freebsd@hub.org> To: Robert Watson <rwatson@FreeBSD.org> Cc: freebsd-stable@freebsd.org, Michel Talon <talon@lpthe.jussieu.fr>, Francisco Reyes <lists@stringsutils.com> Subject: Re: vm_map.c lock up (Was: Re: NFS Locking Issue) Message-ID: <20060715002634.E1799@ganymede.hub.org> In-Reply-To: <20060715000351.U1799@ganymede.hub.org> References: <E1FxzUU-000MMw-5m@cs1.cs.huji.ac.il> <20060705100403.Y80381@fledge.watson.org> <cone.1152136419.991036.72616.1000@zoraida.natserv.net> <20060705234514.I70011@fledge.watson.org> <20060715000351.U1799@ganymede.hub.org>
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On Sat, 15 Jul 2006, User Freebsd wrote: > On Wed, 5 Jul 2006, Robert Watson wrote: > >> If you can get into DDB when the hang has occurred, output via serial >> console for the following commands would be very helpful: >> >> show pcpu >> show allpcpu >> ps >> trace >> traceall >> show locks >> show alllocks >> show uma >> show malloc >> show lockedvnods > > 'k, after 16 days uptime, the server that I got all the debugging turned on > for finally hung up solid ... I was able to break into DDB over the serial > link, and have run all of the above on it ... and the output is attached ... > > One thing to note is that the ps listing is not complete ... there are >6k > processes running at the time, and I don't know how to get rid of the > '--more--' prompt :( After 1k processes, I just hit 'q' and went onto the > other commands ... > > Also, traceall gave me a 'No such command' error ... now that I think about > it, my luck, it was supposed to be 'trace all'? > > If this doesn't provide enough information, please let me know what else I > should do the next time through, besides the above commands ... > > Oh, and how do you get DDB to 'dump core' in 6.x? Back in 4.x days, I'd just > do 'panic' (maybe twice) at the DDB prompt, but that didn't work with 6.x ... > it just gave me a stacktrace and then the DDB> prompt both times ... Quick appendum ... the kernel on this server is from June 28th of this year ... ---- Marc G. Fournier Hub.Org Networking Services (http://www.hub.org) Email . scrappy@hub.org MSN . scrappy@hub.org Yahoo . yscrappy Skype: hub.org ICQ . 7615664
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