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List:       gentooppc-user
Subject:    Re: [gentoo-ppc-user] Kernel Preemption
From:       David Holm <dholm () gentoo ! org>
Date:       2005-08-04 14:04:57
Message-ID: 200508041605.01463.dholm () gentoo ! org
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On Thursday 04 August 2005 15:56, Erik Zeek wrote:

[snip]

> As I understand, it preemption is not exactly a speedup.  It is supposed to
> improve the responsiveness of the kernel to user input.  The kernel can
> switch contexts in more places inside the kernel in response to other
> inputs. This is great for desktops, but probably not for servers/number
> crunchers.

That pretty much sums it up.

> I have no idea if it's fixed or not.  Try disabling SMP and enabling
> preemption followed by an emerge of something large (openoffice, kde, you
> pick).  If it succeeds, maybe it's fixed.  If not, then it's still broken.

No, it hasn't been fixedyet. :(
Please don't attempt to disable SMP with preemption still enabled.

//David

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