2012/5/26 Clint Byrum: > On laptops and other power sensitive devices, this is pretty critical.
> Hypothetical: I have 2GB of RAM, and I want to watch a 50MB video file > on a connection that will take, say, 10 minutes to cache the whole thing > (and its a 10 minute video). > With a regular filesystem hosting /tmp, Every 30 seconds I will wake up > the hard disk, and write data to it. There's a much better solution to that: /proc/sys/vm/laptop_mode and laptop-mode-tools. If you `echo 1 > /proc/sys/vm/laptop_mode` disk will spin up only when reading. laptop-mode-tools usually also increase dirty_*_centisecs allowing to not write cache for minutes. So you get all the benefits of tmpfs without its problems, like heavy swapping or size limited by memory. :) > I doubt most spinning disks will go to sleep in < 30 seconds Mine spins down in 5 seconds. -- Serge -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/CAOVenEpJzU+kqpKy5-g7XNA8RH99jOn7aarw43Gfnf-rMO=v...@mail.gmail.com
