This is a great question, one I'm pondered many times. :-) I usually stick with ext3, turn off noatime, set /var/lock/, /var/log/, /var/tmp/, and /tmp/ to tmpfs. There is another feature I'm looking to try out which spreads out the frequency with which the os commits writes. From lesswatts.org:
cat /proc/sys/vm/dirty_writeback_centisecs echo 1500 > /proc/sys/vm/dirty_writeback_centisecs laptop mode might help too, but that's even foggier for me at the moment. Let us know what you find out. On 10/2/07, mgrollman <[EMAIL PROTECTED]> wrote: > We are looking at using the Voyage 0.4x build for some data logging > work, where a 2nd or 3rd partition on a CF card is used for recording > GPS breadcrumb information, which gets swept out once per day. This > would likely be less than 15MB per day of i/o, but there are lots of > little reads and writes to deal with. As we are comfortable re-building > the kernel if needed, it is possible to use any number of different file > systems that Linux supports, including of course the ext 2 default we > have used with Voyage for a long time. > > But is ext2 the best choice for the data logging partition with > Voyage/Linux? Compression is not really an issue for us, due to > cost/size of modern CF media, nor or read speed, but data integrity that > could be achieved through use of journal might be, as power is not > always stable in mobile GPS logging applications, as well as CF wear > leveling and other flash-specific factor. Has anyone examined this > question before, with consideration of JFFS2 and other similar systems? > I understand that most modern CF cards already can perform the wear > leveling at the controller level within the card, but the journaling > thing would seem to have some real use. Has anyone tried ext3, or even > ReiserFS in a modern CF application? What would make best sense here? > > _______________________________________________ > Voyage-linux mailing list > [email protected] > http://list.voyage.hk/mailman/listinfo/voyage-linux > -- My Blogs: http://www.docunext.com/ http://www.albertlash.com/ _______________________________________________ Voyage-linux mailing list [email protected] http://list.voyage.hk/mailman/listinfo/voyage-linux
