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On Tue, 18 Jul 2006 19:25:16 -0700 "Gary Funck" <gary@intrepid.com> wrote: > > > > > Are you able to confirm that setting CONFIG_DEBUG_SPINLOCK=n fixes it? > > > > And are you able to get us a copy of that test app? > > Yes, I just ran the test with 2.6.17.6. With CONFIG_DEBUG_SPINLOCK=y > the test fails and the soft lockup situation often results. > However, when built with CONFIG_DEBUG_SPINLOCK=n, the test passes, > and runs rather quickly in comparison to when it fails. > > I've attached a slightly updated version of the test case. > It is a little more carefully crafted and prints some > output so that you have some idea that it is working. > That's great, thanks. That pretty much confirms that this long-standing box-killing rwlock starvation bug is specific to Opterons. Neither Ingo nor I have Opteron machines so a fix will take a little longer than one would expect. Meanwhile, an appropriate workaround is to disable CONFIG_DEBUG_SPINLOCK. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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