Some stats:

  Full Linux tree (2.6.23):
  Initial backup: 22530 files in 506.369513 seconds
  Source files size:  252065213 bytes
  Arrow total size:  1102151609 bytes
  Arrow used size:    258371942 bytes

  Patch 1 (2.6.23.1):
  Patch size: 3218
  Delta backup: 2 files in 109.248711 seconds
  Source files size:  252065491 bytes
  Arrow backup size: 1102157417 bytes

  Patch 2 (2.6.23.2):
  Patch size: 34402
  Delta backup: 18 files in 67.595542 seconds
  Source files size:  252066473 bytes
  Arrow backup size: 1102732189 bytes

  Patch 3 (2.6.23.3):
  Patch size: 65218
  Delta backup: 53 files in 69.013804 seconds
  Source files size:  252072178 bytes
  Arrow backup size: 1103334238 bytes

  Patch  (2.6.23.4):
  Patch size: 94870
  Delta backup: 70 files in 67.343316 seconds
  Source files size:  252073453 bytes
  Arrow backup size: 1103974235 bytes

  Patch  (2.6.23.5):
  Patch size: 127389
  Delta backup:
  Source files size:  252077945 bytes
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  Patch  (2.6.23.6):
  Patch size: 182957
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  Patch  (2.6.23.7):
  Patch size: 182957
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  Patch  (2.6.23.8):
  Patch size: 188895
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  Patch  (2.6.23.9):
  Patch size: 221604
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  Patch  (2.6.23.10):
  Patch size: 284301
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  Patch  (2.6.23.):
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