Hi, is there any chance to optimize btrfs_find_space_for_alloc / rb_next on big devices?
I've plenty of free space but most of the time there's only low I/O but high cpu usage. perf top shows: 60,41% [kernel] [k] rb_next 9,74% [kernel] [k] btrfs_find_space_for_alloc 5,55% [kernel] [k] tree_search_offset.isra.25 # btrfs filesystem df /backup/ Data, single: total=14.85TiB, used=14.37TiB System, single: total=32.00MiB, used=2.27MiB Metadata, single: total=63.00GiB, used=54.87GiB GlobalReserve, single: total=512.00MiB, used=80.17MiB -- Stefan -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
