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+Dimensions to test:
+
+ * Filesystems
+ * XFS
+ * JFS
+ * reiser4...?
+ * btrfs...?
+ * Caching
+ * nobarrier, -W 0
+ * barrier, -W 1
+ * RAID level
+ * RAID1
+ * RAID10
+ * RAID5
+ * Number of disks
+ * 1
+ * 2
+ * 3
+ * 4
+ * 6
+ * RAID abstraction
+ * LVM
+ * MD
+ * workload
+ * kernel untar - fsync heavy
+ * kernel build - many-threaded