On Fri, 2008-01-04 at 17:34 +0100, Andi Kleen wrote: > Lee Schermerhorn <[EMAIL PROTECTED]> writes: > > > We can easily [he says, glibly] reproduce the hang on the anon_vma lock > > Is that a NUMA platform? On non x86? Perhaps you just need queued spinlocks?
We see this on both NUMA and non-NUMA. x86_64 and ia64. The basic criteria to reproduce is to be able to run thousands [or low 10s of thousands] of tasks, continually increasing the number until the system just goes into reclaim. Instead of swapping, the system seems to hang--unresponsive from the console, but with "soft lockup" messages spitting out every few seconds... Lee > > -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
