Seeing 800us of latency with cyclictest on a PC with 2.6.26.8 rt patch. Is that normal?

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We don't have our target hardware yet so I'm trying to get a jump on some of the
newer 2.6 kernel features using a PC.

Compiled a 2.6.26.8 with the 2.6.26.8-rt16 patch applied for a Dell Core Duo
laptop and when I run cyclictest the max latency is up around 800us with the
avg. around 65us.

I'm running the CFS scheduler in real time mode.

Is this the best I'm going to see on a PC?  I've been reading everything I can
get my hands on and it looks like SMI and BIOS may hinder me from getting much
below what I'm seeing.

TIA!

Regards,

Brian 

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