On Wednesday 30 January 2002 05:21 am, Martin Knoblauch wrote:
> > [PATCH]: O(1) 2.4.17-J7 Tuneable Parameters
>
>
> How big is the actual degradation in your test? IIR, Ingo is afraid
> that the tunables could easily screw things up, which of course is true.
> What about adding a kernel-build option that leaves the sysctl interface
> read-only by default and enables writing only if it is requested at
> build time?
Running on a machine that I dont think I can really officially give numbers..
However, lets say that without the tuneable code you got a run of hackbench
doing 60 groups that took 8.27 secs, when the tuneable code is in it went
to a whopping 8.6 secs :)
The results at least on this benchmark were all in that decimal noise.
As for a build option, if the code were integrated I might see that as
making sense, but as this is a developmental patch the user is expected
to know what they are doing. Only root can write anything to the parameters
as well.
Cheers,
-- Jack F. Vogel IBM Linux Solutions jfv@us.ibm.com (work) jfv@Bluesong.NET (home) - 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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