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Date: Mon, 06 Sep 2010 21:27:04 +0100 From: Nix <nix@...eri.org.uk> To: Damien Wyart <damien.wyart@...e.fr> Cc: linux-kernel@...r.kernel.org Subject: Re: 2.6.35.*: horrible (exponential? >linear) slowdown to unusability (ACPI idle?) On 6 Sep 2010, Damien Wyart told this: > I think this is related to what has been discussed in this thread: > http://lkml.org/lkml/2010/7/14/11 Quite possibly :/ though I'm on x86-64, not x86, and certainly don't have kmemleak turne don. > I've not seen the problem with 2.6.35.4 yet, and only once with > 2.6.35.3. Zeno said it disappeared for him when he started to use > 2.6.35-stable. Argh. > So if you can reproduce it quite easily, I guess bisection (even > painful) will be the best way to get (hopefuly) an idea of where the > problem might come from... 'Quite easily' is not quite true. It does not show up in qemu -kernel. It does not show up if you boot straight to an emergency boot shell in the initramfs (I was trying to avoid activating the RAID arrays). So I guess it's a full-blown boot each time, which is made pointlessly difficult by the fact that the rpc.mountd on my NFS server is acting up, giving me -ESTALE half the time for an initial mount (??!!!) and thus totally buggering up my client system whenever I reboot. So I may have to debug *that* first. What fun. But I'll get around to it. -- 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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