Hi! >> This is a patch (very ugly, assumes you have just one disk) to bring >> powersaving to AHCI. You need Alan's SCSI autosuspend (attached) patch >> as a base. >> >> It saves .5W compared to config with disk spinning, and even .15W >> compared to hdparm -y... on my thinkpad x60 anyway. > .. > > There was a discussion of this here today. Real-life discussion, or something I could read? :-). > It makes good use of AHCI-specific features. > > Has it been tested with a Port-Multiplier yet? I do not know what port-multiplier is, sorry. But it was not really tested. It is not expected to work on any other config than notebook very similar to mine. > This is cool enough that we really ought to do a hardware-independent > version, so that all SATA interfaces could benefit. Especially ata_piix, > but others too. Well, it seems like it is 10 lines per driver once Alan's SCSI autosuspend patches are in... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
