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ARC Summary BB

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Jan 2nd, 2014
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  1. System Memory:
  2.  
  3. 0.58% 92.17 MiB Active, 2.13% 336.55 MiB Inact
  4. 46.82% 7.21 GiB Wired, 0.00% 0 Bytes Cache
  5. 50.45% 7.77 GiB Free, 0.01% 2.27 MiB Gap
  6.  
  7. Real Installed: 16.00 GiB
  8. Real Available: 99.27% 15.88 GiB
  9. Real Managed: 96.95% 15.40 GiB
  10.  
  11. Logical Total: 16.00 GiB
  12. Logical Used: 49.39% 7.90 GiB
  13. Logical Free: 50.61% 8.10 GiB
  14.  
  15. Kernel Memory: 3.33 GiB
  16. Data: 99.31% 3.31 GiB
  17. Text: 0.69% 23.50 MiB
  18.  
  19. Kernel Memory Map: 4.16 GiB
  20. Size: 9.13% 388.47 MiB
  21. Free: 90.87% 3.78 GiB
  22. Page: 1
  23. ------------------------------------------------------------------------
  24.  
  25. ARC Summary: (HEALTHY)
  26. Storage pool Version: 5000
  27. Filesystem Version: 5
  28. Memory Throttle Count: 0
  29.  
  30. ARC Misc:
  31. Deleted: 2.56m
  32. Recycle Misses: 198.90k
  33. Mutex Misses: 4.59k
  34. Evict Skips: 4.59k
  35.  
  36. ARC Size: 26.56% 3.82 GiB
  37. Target Size: (Adaptive) 78.65% 11.32 GiB
  38. Min Size (Hard Limit): 12.50% 1.80 GiB
  39. Max Size (High Water): 8:1 14.40 GiB
  40.  
  41. ARC Size Breakdown:
  42. Recently Used Cache Size: 83.24% 9.43 GiB
  43. Frequently Used Cache Size: 16.76% 1.90 GiB
  44.  
  45. ARC Hash Breakdown:
  46. Elements Max: 2.49m
  47. Elements Current: 100.00% 2.49m
  48. Collisions: 11.51m
  49. Chain Max: 27
  50. Chains: 261.97k
  51. Page: 2
  52. ------------------------------------------------------------------------
  53.  
  54. ARC Efficiency: 31.22m
  55. Cache Hit Ratio: 90.56% 28.27m
  56. Cache Miss Ratio: 9.44% 2.95m
  57. Actual Hit Ratio: 86.80% 27.10m
  58.  
  59. Data Demand Efficiency: 97.64% 7.49m
  60. Data Prefetch Efficiency: 0.62% 317.65k
  61.  
  62. CACHE HITS BY CACHE LIST:
  63. Most Recently Used: 33.73% 9.54m
  64. Most Frequently Used: 62.12% 17.56m
  65. Most Recently Used Ghost: 1.16% 327.81k
  66. Most Frequently Used Ghost: 3.05% 863.00k
  67.  
  68. CACHE HITS BY DATA TYPE:
  69. Demand Data: 25.86% 7.31m
  70. Prefetch Data: 0.01% 1.96k
  71. Demand Metadata: 69.99% 19.79m
  72. Prefetch Metadata: 4.15% 1.17m
  73.  
  74. CACHE MISSES BY DATA TYPE:
  75. Demand Data: 5.99% 176.61k
  76. Prefetch Data: 10.71% 315.68k
  77. Demand Metadata: 81.64% 2.41m
  78. Prefetch Metadata: 1.66% 48.91k
  79. Page: 3
  80. ------------------------------------------------------------------------
  81.  
  82. L2 ARC Summary: (DEGRADED)
  83. Passed Headroom: 5.21m
  84. Tried Lock Failures: 2.86m
  85. IO In Progress: 86
  86. Low Memory Aborts: 14
  87. Free on Write: 2.95k
  88. Writes While Full: 23.96k
  89. R/W Clashes: 31
  90. Bad Checksums: 3.16k
  91. IO Errors: 0
  92. SPA Mismatch: 0
  93.  
  94. L2 ARC Size: (Adaptive) 129.79 GiB
  95. Header Size: 0.20% 259.66 MiB
  96.  
  97. L2 ARC Evicts:
  98. Lock Retries: 20
  99. Upon Reading: 0
  100.  
  101. L2 ARC Breakdown: 2.95m
  102. Hit Ratio: 41.80% 1.23m
  103. Miss Ratio: 58.20% 1.72m
  104. Feeds: 208.63k
  105.  
  106. L2 ARC Buffer:
  107. Bytes Scanned: 137.70 TiB
  108. Buffer Iterations: 208.63k
  109. List Iterations: 13.15m
  110. NULL List Iterations: 275.90k
  111.  
  112. L2 ARC Writes:
  113. Writes Sent: 100.00% 47.87k
  114. Page: 4
  115. ------------------------------------------------------------------------
  116.  
  117. File-Level Prefetch: (HEALTHY)
  118.  
  119. DMU Efficiency: 76.82m
  120. Hit Ratio: 91.30% 70.14m
  121. Miss Ratio: 8.70% 6.69m
  122.  
  123. Colinear: 6.69m
  124. Hit Ratio: 0.03% 1.84k
  125. Miss Ratio: 99.97% 6.68m
  126.  
  127. Stride: 69.64m
  128. Hit Ratio: 99.83% 69.53m
  129. Miss Ratio: 0.17% 116.14k
  130.  
  131. DMU Misc:
  132. Reclaim: 6.68m
  133. Successes: 1.98% 132.48k
  134. Failures: 98.02% 6.55m
  135.  
  136. Streams: 607.63k
  137. +Resets: 0.01% 39
  138. -Resets: 99.99% 607.59k
  139. Bogus: 0
  140. Page: 5
  141. ------------------------------------------------------------------------
  142.  
  143. Page: 6
  144. ------------------------------------------------------------------------
  145.  
  146. ZFS Tunable (sysctl):
  147. kern.maxusers 384
  148. vm.kmem_size 16534900736
  149. vm.kmem_size_scale 1
  150. vm.kmem_size_min 0
  151. vm.kmem_size_max 329853485875
  152. vfs.zfs.l2c_only_size 136729262080
  153. vfs.zfs.mfu_ghost_data_lsize 1445361664
  154. vfs.zfs.mfu_ghost_metadata_lsize 1582969344
  155. vfs.zfs.mfu_ghost_size 3028335104
  156. vfs.zfs.mfu_data_lsize 8679424
  157. vfs.zfs.mfu_metadata_lsize 163758592
  158. vfs.zfs.mfu_size 173234688
  159. vfs.zfs.mru_ghost_data_lsize 7735385088
  160. vfs.zfs.mru_ghost_metadata_lsize 1388251136
  161. vfs.zfs.mru_ghost_size 9123636224
  162. vfs.zfs.mru_data_lsize 232422912
  163. vfs.zfs.mru_metadata_lsize 2510617600
  164. vfs.zfs.mru_size 2973784576
  165. vfs.zfs.anon_data_lsize 0
  166. vfs.zfs.anon_metadata_lsize 0
  167. vfs.zfs.anon_size 774144
  168. vfs.zfs.l2arc_norw 1
  169. vfs.zfs.l2arc_feed_again 1
  170. vfs.zfs.l2arc_noprefetch 1
  171. vfs.zfs.l2arc_feed_min_ms 200
  172. vfs.zfs.l2arc_feed_secs 1
  173. vfs.zfs.l2arc_headroom 2
  174. vfs.zfs.l2arc_write_boost 8388608
  175. vfs.zfs.l2arc_write_max 8388608
  176. vfs.zfs.arc_meta_limit 3865289728
  177. vfs.zfs.arc_meta_used 3865675288
  178. vfs.zfs.arc_min 1932644864
  179. vfs.zfs.arc_max 15461158912
  180. vfs.zfs.dedup.prefetch 1
  181. vfs.zfs.mdcomp_disable 0
  182. vfs.zfs.nopwrite_enabled 1
  183. vfs.zfs.write_limit_override 0
  184. vfs.zfs.write_limit_inflated 51165143040
  185. vfs.zfs.write_limit_max 2131880960
  186. vfs.zfs.write_limit_min 33554432
  187. vfs.zfs.write_limit_shift 3
  188. vfs.zfs.no_write_throttle 0
  189. vfs.zfs.zfetch.array_rd_sz 1048576
  190. vfs.zfs.zfetch.block_cap 256
  191. vfs.zfs.zfetch.min_sec_reap 2
  192. vfs.zfs.zfetch.max_streams 8
  193. vfs.zfs.prefetch_disable 0
  194. vfs.zfs.no_scrub_prefetch 0
  195. vfs.zfs.no_scrub_io 0
  196. vfs.zfs.resilver_min_time_ms 3000
  197. vfs.zfs.free_min_time_ms 1000
  198. vfs.zfs.scan_min_time_ms 1000
  199. vfs.zfs.scan_idle 50
  200. vfs.zfs.scrub_delay 4
  201. vfs.zfs.resilver_delay 2
  202. vfs.zfs.top_maxinflight 32
  203. vfs.zfs.write_to_degraded 0
  204. vfs.zfs.mg_alloc_failures 8
  205. vfs.zfs.check_hostid 1
  206. vfs.zfs.deadman_enabled 1
  207. vfs.zfs.deadman_synctime 1000
  208. vfs.zfs.recover 0
  209. vfs.zfs.txg.synctime_ms 1000
  210. vfs.zfs.txg.timeout 5
  211. vfs.zfs.vdev.cache.bshift 16
  212. vfs.zfs.vdev.cache.size 0
  213. vfs.zfs.vdev.cache.max 16384
  214. vfs.zfs.vdev.trim_on_init 1
  215. vfs.zfs.vdev.write_gap_limit 4096
  216. vfs.zfs.vdev.read_gap_limit 32768
  217. vfs.zfs.vdev.aggregation_limit 131072
  218. vfs.zfs.vdev.ramp_rate 2
  219. vfs.zfs.vdev.time_shift 29
  220. vfs.zfs.vdev.min_pending 4
  221. vfs.zfs.vdev.max_pending 10
  222. vfs.zfs.vdev.larger_ashift_minimal 1
  223. vfs.zfs.vdev.larger_ashift_disable 0
  224. vfs.zfs.vdev.bio_delete_disable 0
  225. vfs.zfs.vdev.bio_flush_disable 0
  226. vfs.zfs.vdev.trim_max_pending 64
  227. vfs.zfs.vdev.trim_max_bytes 2147483648
  228. vfs.zfs.cache_flush_disable 0
  229. vfs.zfs.zil_replay_disable 0
  230. vfs.zfs.sync_pass_rewrite 2
  231. vfs.zfs.sync_pass_dont_compress 5
  232. vfs.zfs.sync_pass_deferred_free 2
  233. vfs.zfs.zio.use_uma 0
  234. vfs.zfs.snapshot_list_prefetch 0
  235. vfs.zfs.version.ioctl 3
  236. vfs.zfs.version.zpl 5
  237. vfs.zfs.version.spa 5000
  238. vfs.zfs.version.acl 1
  239. vfs.zfs.debug 0
  240. vfs.zfs.super_owner 0
  241. vfs.zfs.trim.enabled 1
  242. vfs.zfs.trim.max_interval 1
  243. vfs.zfs.trim.timeout 30
  244. vfs.zfs.trim.txg_delay 32
  245. Page: 7
  246. ------------------------------------------------------------------------
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