AMD64 with 9.0 PRERELEASE freezing/hanging without any messages

Mark Felder feld at
Mon Nov 21 15:39:39 UTC 2011

On Sat, 19 Nov 2011 04:54:18 -0600, Jukka A. Ukkonen <jau at> wrote:

> Hello,
> Has anyone else noticed a similar odd behavior with AMD64 and 9.0
> prerelease (as well as RCs and betas)?
> On my 12 core (2*4162EE) the whole system just freezes quite often
> without any warning, without any messages being logged. Neither is
> there any panic message from the kernel. The system just suddenly
> hangs such that there is no alternative but to reboot using the
> reset button.


This is happening right now on my little Atom based ZFS NAS and it's  
driving me insane. 9.0-PRERELEASE compiled with Clang (don't think that  
matters though). However, mine doesn't fully panic and recovers. It justs  
completely freezes for like 5-10 seconds. Won't take any keyboard input,  
doesn't show anything on console/SSH, but is still pingable. Crazy!

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