4 ms·
True. There are also things like UFS fragments and ReiserFS tail packing etc, but does plain ext3 or ext4 implement any of these optimizations? I don't think so
by solarexplorer 14y ago
True. There are also things like UFS fragments and ReiserFS tail packing etc, but does plain ext3 or ext4 implement any of these optimizations? I don't think so. So in the most common case nothing is gained by this optimization.
- e12e 14y agoIt looks like support for in-line data in ext4 is comming to mainline in 3.8: http://www.phoronix.com/scan.php?page=news_item&px=MTI1NTA http://www.phoronix.com/scan.php?page=news_item&px=MTI1N... As this has been discussed for quite some time, I actually thought it was already enabled in ext4 -- apparently not. BTRFS supports "space efficient packing of small files" - by suballocating blocks. Not sure what the real mimimum size on disk for a file is though -- but apparently you can approach header+<data> size both on btrfs and ext4 (and on BSD under UFS2 afaik).