On Fri, Aug 14, 2015 at 9:16 AM, Eduardo Bach <hellbach@xxxxxxxxx> wrote: > With btrfs the result approaches 3.5GB/s. When using mdadm+xfs the > result reaches 6gb/s, which is the expected value when compared with > parallel dd made on discs. mdadm with what chunk (strip) size? The default for mdadm is 512KiB. On Btrfs it's fixed at 64KiB. While testing with 64KiB chunk with XFS on md RAID might improve its performance relative to Btrfs, at least it's a more apples to apples comparison. -- Chris Murphy -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
