http://en.wikipedia.org/wiki/Ext4EXT4 introduces Extents to replace the block mapping scheme used on earlier generations of the extended file-system, persistent pre-allocation, delayed allocation, precision timestamps, and journal check summing.
things like this:
it should be possible in the Linux 2.6.28 kernel... and since the router has 2.6 drivers nowAn extent is a range of contiguous physical blocks, improving large file performance and reducing fragmentation.
just check out the graphs from page 2 to page 8: http://www.phoronix.com/scan.php?pag...nchmarks&num=2
overall EXT4 is significantly faster according to these benchmarks![]()




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