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[2.6.27-rc6 regression] Intermittent boot problem with 2.6.27-rc6

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From: Ravikiran G Thirumalai
Subject: [2.6.27-rc6 regression] Intermittent boot problem with 2.6.27-rc6
Date: Tuesday, September 16, 2008 - 1:04 pm

Hi,
Booting 2.6.27-rc6, or the current Linus' git on large x86_64 NUMA wedges
intermittently.  This happens on machines with more than 4 NUMA nodes.  The
same kernel boots on similar hardware with fewer NUMA nodes (or boards).
2.6.27-rc3 seemed to boot well on similar configurations, so looks like a
regression crept in between 2.6.27-rc3 and rc6.

I am trying a few things -- commandline options to eliminate popular
suspects (such as unsynced tsc clocksources)  as well as git bisect, but
wanted to report the regression in the meanwhile.
Here's the dmesg of a 24 core 6 node wedged system.

Thanks,
Kiran
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Messages in current thread:
[2.6.27-rc6 regression] Intermittent boot problem with 2.6 ..., Ravikiran G Thirumalai, (Tue Sep 16, 1:04 pm)
Re: [2.6.27-rc6 regression] Intermittent boot problem with ..., Zhang, Yanmin, (Wed Sep 17, 1:23 am)
Re: [2.6.27-rc6 regression] Intermittent boot problem with ..., Ingo Molnar, (Wed Sep 17, 2:55 am)
Re: [2.6.27-rc6 regression] Intermittent boot problem with ..., Ravikiran G Thirumalai, (Wed Sep 17, 1:01 pm)