From mboxrd@z Thu Jan  1 00:00:00 1970
From: Clark Williams <williams@redhat.com>
Subject: Re: Tweak Latency on Intel ATOM
Date: Mon, 15 Feb 2010 08:38:47 -0600
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On Mon, 15 Feb 2010 10:32:54 +0100
Max M=FCller <mxmr@gmx.net> wrote:
=20
> >
> > I'd say you're doing pretty good keeping under 50us. You might want to
> > try it under a heavier load than the shell script you've been running.
> > If you don't want to fool with rteval, try kicking off a kernel compile
> > in another window like this:
> >
> > $ while true; do make -j4 clean bzImage modules; done
> >
> > and then run cyclictest. A kernel compile with parallel jobs (-j) is a
> > good overall load of computation and I/O.
> >
> >  =20
>=20
> I tested now like you told me with irqbalance and cpuspeed services=20
> disabled. I hope i made the right for disabling irqbalance, i used the=20
> kernel parameter acpi_no_irqbalance. Is this correct? Unfortunately the=20
> results were nearly equal as before.

I don't think you're going to get much better results on the Atom. I
have an MSI Nettop box with the dual-core version and I saw about the
same results as you.

What sort of scheduling deadlines are you trying to meet?=20

Clark

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