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Am 05.03.2011 11:48, schrieb Stéphane Guedon: |
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> I have a laptop, it works quite good, but I would like to improve battery |
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> length. |
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> |
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> The fact is that, out of the classical options (kernel custom, KDE battery |
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> management...), there's no information about disk mount options, whereas it |
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> eat a lot of power. |
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> |
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> my current mount : |
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> |
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> rootfs on / type rootfs (rw) |
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> /dev/root on / type ext3 (rw,commit=0) |
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> /dev/shm on /tmp type tmpfs (rw,nosuid,nodev) |
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> /dev/sda7 on /var type reiserfs (rw) |
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> /dev/sda8 on /media/musique type vfat (rw,uid=0,gid=18,umask=007) |
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> /dev/sda2 on /windows type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096) |
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> /dev/sda6 on /home type ext4 (rw,user_xattr,commit=0) |
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> |
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> and sda5 as swap. |
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> |
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> how to make it better ? (I know reiserfs is not a good idea, but at the moment |
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> of building the system, it seamed good for little files/DB...) |
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> |
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> I have read of mounting part of /var as tmpfs... ? |
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> |
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/var as tmpfs is not a good idea. There are lots of persistent files in |
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there. If you want to be standard-conformant, you cannot even mount |
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/var/tmp as tmpfs because its content is also meant to survive reboots. |
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You can still do it though and mounting /tmp as tmpfs is completely okay. |
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Your choice of filesystem has little or no effect. You could proably |
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argue that JFS needs less CPU resources than for example ReiserFS but |
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that really doesn't matter. |
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What you really want is app-laptop/laptop-mode-tools. |
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|
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Hope this helps, |
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Florian Philipp |
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