On Sun, Apr 26, 2009 at 11:29:39PM -0600, Curt Wohlgemuth wrote: > > The random read throughput on the 10GB file went from ~16 MB/s to ~22 > MB/s after Andreas' patch; the total fragmentation of the file was > much lower than before his patch. > > However, the number of extents went up by quite a bit (I don't have > the debugfs output in front of me at the moment, sorry). It seemed > that no extent crossed a block group; I didn't have time to see if > Andreas' patch disabled flex BGs or not, as to what was going on. Try running e2fsck with the "-E fragcheck" option, and then capture e2fsck's stdout. It will help with the grunt work of doing the analysis, in terms of displaying the details of all of the files which are discontiguous. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
