Sean McCauliff <Sean.D.McCauliff@xxxxxxxx> writes: > I tried running perf on the copy program on subset of the sparse > files. It seems like ext4 is the source of high cpu utilization. At > this point this high cpu utilization is very annoying, but I can live > with this problem. If you know something simple I could do to > alleviate this problem I would be most appreciative. At the end of > this email is a consolidation of information about this problem. > > Events: 6M cycles > -76.80% java [kernel.kallsyms] [k] ext4_mb_good_group > - ext4_mb_good_group Is your file system too full? A lot of file system get inefficient in allocating blocks when the file system is nearly full. -Andi -- ak@xxxxxxxxxxxxxxx -- Speaking for myself only -- 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
