On 06/07/2008 19:21, Tino Keitel wrote: > On Sat, Jul 05, 2008 at 18:44:21 +0300, Felipe Balbi wrote: >> Hi, >> >> On Sat, Jul 5, 2008 at 6:23 PM, Arjan van de Ven <arjan@xxxxxxxxxxxxx> wrote: > > [...] > >>> Also take a look at >>> http://kerneltrap.org/mailarchive/linux-kernel/2008/5/8/1771024 because >>> these patches save like 0.75W in our lab. >> cool, is it merged upstream ? > > If I got this right, at least Linux 2.6.25 allows to control this via > "/sys/class/scsi_host/host*/link_power_management_policy". Setting it > to "min_power" does the trick. This is also covered by powertop 1.10 > and later. I cannot see this on 2.6.25.9. Is there a particular configuration option you must enable, or it just didn't make it to 2.6.25? Thanks. Regards. -- Filippo Zangheri GPG key ID: 0x6C1F2F2F
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