[Debian-eeepc-devel] PCIe ASPM?

Thiemo Nagel thiemo.nagel at ph.tum.de
Wed Jul 22 09:45:55 UTC 2009


Thiemo Nagel wrote:
> I've attached my script which does a stochastic comparison of power 
> consumption of two different configurations (currently with and without 
> ASPM)

Ooops.  The script originally attached is broken, here comes a corrected 
version...

BTW:  My latest results with computer fully idle:

/sys/module/pcie_aspm/parameters/policy: powersave
cur: 6.17W, avg 10: 6.25W, tot. avg: 6.40W, stddev: 0.44W (n=261)
/sys/module/pcie_aspm/parameters/policy: performance
cur: 6.19W, avg 10: 6.25W, tot. avg: 6.41W, stddev: 0.52W (n=267)

So with my kernel and hardware, ASPM seems to have no effect.

Kind regards,

Thiemo

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