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Message-Id: <200805162148.AAJ21381.QOSMOFFFLHOVJt@I-love.SAKURA.ne.jp> Date: Fri, 16 May 2008 21:48:12 +0900 From: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp> To: akataria@...are.com Cc: devzero@....de, linux-kernel@...r.kernel.org, dhecht@...are.com Subject: Re: Kernel hangs in SMP + VMware environment. Hello. Alok Kataria wrote: > Actually it would be better to use clocksource=acpi_pm on kernels which don't > have this patch, as ACPI_PM comes with many more featuers like hrtimers, > nohz, etc. > > On the other hand for kernels which have this patch attached, it would be > best to use TSC, for performance. I see. Thanks. I'm not sure, but this problem might exist in all kernels since 2.6.18 , for I can find clocksource= parameter in Documentation/kernel-parameters.txt . I didn't experience this problem in earlier kernels (e.g. 2.6.20) since I was running only 1 VMware guest at a time. Today I ran 2 VMware guests simultaneously (one with kernel 2.6.22 and the other with kernel 2.6.18, both are assigned 2 virtual CPUs) and I encountered may-be-hanged-up with the 2.6.18 one. The Ctrl-C didn't work, the Alt-F? didn't work, the Ctrl-Alt-Del didn't work. I had no time to reproduce it, so I'm not sure it has actually hanged up. Regards. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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