Messages in this thread | | | Date | Fri, 22 Oct 2004 19:07:13 +0200 | From | Andrea Arcangeli <> | Subject | Re: ZONE_PADDING wastes 4 bytes of the new cacheline |
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On Thu, Oct 21, 2004 at 08:26:56PM -0700, Andrew Morton wrote: > Well yes, I spose the answer as always is "show me a testcase". But the
I already gave you a testcase ages ago. Pretty simple. Get your hands on a 2G box. boot, swapoff -a, load 1G in pagecache. malloc 1G, bzero 1G, then open some dozen thousand files until the machine deadlocks despite 1G is perfcetly freeable in highmem.
> Any halfway setting will screw everyone.
this stuff run in production for 2 years at least, if anyone would be screwed I'd already know. The only thing I know is that I've oom deadlocks in my queue of bugs, and we'll see if this fixes them, it's hard to tell since I don't know how much lowmem is pinned by highmem capable allocs (like pagetables!). - 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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