Hi Jeff, Here's the most recent patches for ALPM. These are also located at: http://www.kernel.org/pub/linux/kernel/people/kristen/patches/SATA/alpm These patches implement Aggressive Link Power management for AHCI controllers. This feature is described in detail in the AHCI 1.x spec. It provides power savings of anywhere from .5-1.5 Watts depending on the system when it is enabled. (a graph demonstrating power savings of this patch along with other power patches is located at http://www.linuxpowertop.org/results.php for your enjoyment). This patch is changed from the previous version in that it incorporates all the feedback I've gotten on the patches to date. It changes the default of the ahci driver to be max_performance rather than min_power, so userspace will need to explicitly enable alpm via the sysfs interface when it deems it an appropriate time to do this. In addition, the patch was changed to allow either HIPM or DIPM as a prerequisite for enabling ALPM, rather than just using HIPM. Thanks, Kristen -- - 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
