Re: RT patch acceptance
From: David Lang
Date: Tue May 31 2005 - 15:17:49 EST
how much of a slowdown is it?
distros already throw >20% performance improvements on the floor to
simplify their lives by reduceing the number of different binary kernels
they have to support.
somehow I don't think a 5% or so (which is the locking overhead of running
a SMP kernel on UP last I heard) would be the end of the world for them,
especially if it made multimedia eye candy work smoother.
David Lang
On Tue, 31 May 2005, Andi Kleen wrote:
Date: 31 May 2005 22:01:14 +0200 Tue, 31 May 2005 22:01:14 +0200
From: Andi Kleen <ak@xxxxxx>
To: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: karim@xxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, akpm@xxxxxxxx,
hch@xxxxxxxxxxxxx, dwalker@xxxxxxxxxx, Ingo Molnar <mingo@xxxxxxx>,
Sven-Thorsten Dietrich <sdietrich@xxxxxxxxxx>,
James Bruce <bruce@xxxxxxxxxxxxxx>, kus Kusche Klaus <kus@xxxxxxxx>,
Nick Piggin <nickpiggin@xxxxxxxxxxxx>, Esben Nielsen <simlo@xxxxxxxxxx>,
"Bill Huey (hui)" <bhuey@xxxxxxxx>
Subject: Re: RT patch acceptance
On Tue, May 31, 2005 at 12:29:35PM -0400, Steven Rostedt wrote:
I would assume that the distros would ship without PREEMPT enabled
because it was (and probably still is) considered unstable.
In addition to that it is slow too due to much increased locking
overhead.
-Andi
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