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  1. ZFS Subsystem Report Tue Mar 26 19:54:38 2019
  2. Linux 4.9.0-8-amd64 0.7.12-1~bpo9+1
  3. Machine: storage-server (x86_64) 0.7.12-1~bpo9+1
  4.  
  5. ARC status: HEALTHY
  6. Memory throttle count: 0
  7.  
  8. ARC size (current): 100.0 % 100.0 GiB
  9. Target size (adaptive): 100.0 % 100.0 GiB
  10. Min size (hard limit): 100.0 % 100.0 GiB
  11. Max size (high water): 1:1 100.0 GiB
  12. Most Frequently Used (MFU) cache size: 70.4 % 69.6 GiB
  13. Most Recently Used (MRU) cache size: 29.6 % 29.2 GiB
  14. Metadata cache size (hard limit): 75.0 % 75.0 GiB
  15. Metadata cache size (current): 3.8 % 2.8 GiB
  16. Dnode cache size (hard limit): 13.3 % 10.0 GiB
  17. Dnode cache size (current): 4.9 % 498.7 MiB
  18.  
  19. ARC hash breakdown:
  20. Elements max: 3.7M
  21. Elements current: 27.4 % 1.0M
  22. Collisions: 1.4M
  23. Chain max: 4
  24. Chains: 30.7k
  25.  
  26. ARC misc:
  27. Deleted: 2.3M
  28. Mutex misses: 526
  29. Eviction skips: 525.1k
  30.  
  31. ARC total accesses (hits + misses): 2.0G
  32. Cache hit ratio: 98.3 % 1.9G
  33. Cache miss ratio: 1.7 % 32.9M
  34. Actual hit ratio (MFU + MRU hits): 98.2 % 1.9G
  35. Data demand efficiency: 99.7 % 1.2G
  36. Data prefetch efficiency: 49.8 % 5.8M
  37.  
  38. Cache hits by cache type:
  39. Most frequently used (MFU): 96.2 % 1.9G
  40. Most recently used (MRU): 3.8 % 72.5M
  41. Most frequently used (MFU) ghost: < 0.1 % 25.2k
  42. Most recently used (MRU) ghost: 0.2 % 3.8M
  43.  
  44. Cache hits by data type:
  45. Demand data: 61.6 % 1.2G
  46. Demand prefetch data: 0.2 % 2.9M
  47. Demand metadata: 38.2 % 735.8M
  48. Demand prefetch metadata: < 0.1 % 713.0k
  49.  
  50. Cache misses by data type:
  51. Demand data: 10.8 % 3.5M
  52. Demand prefetch data: 8.9 % 2.9M
  53. Demand metadata: 79.9 % 26.3M
  54. Demand prefetch metadata: 0.4 % 145.8k
  55.  
  56. DMU prefetch efficiency: 1.4G
  57. Hit ratio: 0.6 % 7.8M
  58. Miss ratio: 99.4 % 1.4G
  59.  
  60. L2ARC not detected, skipping section
  61.  
  62. Solaris Porting Layer (SPL):
  63. spl_hostid 0
  64. spl_hostid_path /etc/hostid
  65. spl_kmem_alloc_max 1048576
  66. spl_kmem_alloc_warn 65536
  67. spl_kmem_cache_expire 2
  68. spl_kmem_cache_kmem_limit 2048
  69. spl_kmem_cache_kmem_threads 4
  70. spl_kmem_cache_magazine_size 0
  71. spl_kmem_cache_max_size 32
  72. spl_kmem_cache_obj_per_slab 8
  73. spl_kmem_cache_obj_per_slab_min 1
  74. spl_kmem_cache_reclaim 0
  75. spl_kmem_cache_slab_limit 16384
  76. spl_max_show_tasks 512
  77. spl_panic_halt 0
  78. spl_taskq_kick 0
  79. spl_taskq_thread_bind 0
  80. spl_taskq_thread_dynamic 1
  81. spl_taskq_thread_priority 1
  82. spl_taskq_thread_sequential 4
  83.  
  84. Tunables:
  85. dbuf_cache_hiwater_pct 10
  86. dbuf_cache_lowater_pct 10
  87. dbuf_cache_max_bytes 104857600
  88. dbuf_cache_max_shift 5
  89. dmu_object_alloc_chunk_shift 7
  90. ignore_hole_birth 1
  91. l2arc_feed_again 1
  92. l2arc_feed_min_ms 200
  93. l2arc_feed_secs 1
  94. l2arc_headroom 2
  95. l2arc_headroom_boost 200
  96. l2arc_noprefetch 1
  97. l2arc_norw 0
  98. l2arc_write_boost 8388608
  99. l2arc_write_max 8388608
  100. metaslab_aliquot 524288
  101. metaslab_bias_enabled 1
  102. metaslab_debug_load 0
  103. metaslab_debug_unload 0
  104. metaslab_fragmentation_factor_enabled 1
  105. metaslab_lba_weighting_enabled 1
  106. metaslab_preload_enabled 1
  107. metaslabs_per_vdev 200
  108. send_holes_without_birth_time 1
  109. spa_asize_inflation 24
  110. spa_config_path /etc/zfs/zpool.cache
  111. spa_load_verify_data 1
  112. spa_load_verify_maxinflight 10000
  113. spa_load_verify_metadata 1
  114. spa_slop_shift 5
  115. zfetch_array_rd_sz 1048576
  116. zfetch_max_distance 8388608
  117. zfetch_max_streams 8
  118. zfetch_min_sec_reap 2
  119. zfs_abd_scatter_enabled 1
  120. zfs_abd_scatter_max_order 10
  121. zfs_admin_snapshot 1
  122. zfs_arc_average_blocksize 8192
  123. zfs_arc_dnode_limit 0
  124. zfs_arc_dnode_limit_percent 10
  125. zfs_arc_dnode_reduce_percent 10
  126. zfs_arc_grow_retry 0
  127. zfs_arc_lotsfree_percent 10
  128. zfs_arc_max 107374182400
  129. zfs_arc_meta_adjust_restarts 4096
  130. zfs_arc_meta_limit 0
  131. zfs_arc_meta_limit_percent 75
  132. zfs_arc_meta_min 10737418240
  133. zfs_arc_meta_prune 10000
  134. zfs_arc_meta_strategy 1
  135. zfs_arc_min 107374182400
  136. zfs_arc_min_prefetch_lifespan 0
  137. zfs_arc_p_dampener_disable 1
  138. zfs_arc_p_min_shift 0
  139. zfs_arc_pc_percent 0
  140. zfs_arc_shrink_shift 0
  141. zfs_arc_sys_free 0
  142. zfs_autoimport_disable 1
  143. zfs_checksums_per_second 20
  144. zfs_compressed_arc_enabled 1
  145. zfs_dbgmsg_enable 0
  146. zfs_dbgmsg_maxsize 4194304
  147. zfs_dbuf_state_index 0
  148. zfs_deadman_checktime_ms 5000
  149. zfs_deadman_enabled 1
  150. zfs_deadman_synctime_ms 1000000
  151. zfs_dedup_prefetch 0
  152. zfs_delay_min_dirty_percent 60
  153. zfs_delay_scale 500000
  154. zfs_delays_per_second 20
  155. zfs_delete_blocks 20480
  156. zfs_dirty_data_max 4294967296
  157. zfs_dirty_data_max_max 4294967296
  158. zfs_dirty_data_max_max_percent 25
  159. zfs_dirty_data_max_percent 10
  160. zfs_dirty_data_sync 67108864
  161. zfs_dmu_offset_next_sync 0
  162. zfs_expire_snapshot 300
  163. zfs_flags 0
  164. zfs_free_bpobj_enabled 1
  165. zfs_free_leak_on_eio 0
  166. zfs_free_max_blocks 100000
  167. zfs_free_min_time_ms 1000
  168. zfs_immediate_write_sz 32768
  169. zfs_max_recordsize 1048576
  170. zfs_mdcomp_disable 0
  171. zfs_metaslab_fragmentation_threshold 70
  172. zfs_metaslab_segment_weight_enabled 1
  173. zfs_metaslab_switch_threshold 2
  174. zfs_mg_fragmentation_threshold 85
  175. zfs_mg_noalloc_threshold 0
  176. zfs_multihost_fail_intervals 5
  177. zfs_multihost_history 0
  178. zfs_multihost_import_intervals 10
  179. zfs_multihost_interval 1000
  180. zfs_multilist_num_sublists 0
  181. zfs_no_scrub_io 0
  182. zfs_no_scrub_prefetch 0
  183. zfs_nocacheflush 0
  184. zfs_nopwrite_enabled 1
  185. zfs_object_mutex_size 64
  186. zfs_pd_bytes_max 52428800
  187. zfs_per_txg_dirty_frees_percent 30
  188. zfs_prefetch_disable 0
  189. zfs_read_chunk_size 1048576
  190. zfs_read_history 0
  191. zfs_read_history_hits 0
  192. zfs_recover 0
  193. zfs_recv_queue_length 16777216
  194. zfs_resilver_delay 2
  195. zfs_resilver_min_time_ms 3000
  196. zfs_scan_idle 50
  197. zfs_scan_ignore_errors 0
  198. zfs_scan_min_time_ms 1000
  199. zfs_scrub_delay 4
  200. zfs_send_corrupt_data 0
  201. zfs_send_queue_length 16777216
  202. zfs_sync_pass_deferred_free 2
  203. zfs_sync_pass_dont_compress 5
  204. zfs_sync_pass_rewrite 2
  205. zfs_sync_taskq_batch_pct 75
  206. zfs_top_maxinflight 32
  207. zfs_txg_history 0
  208. zfs_txg_timeout 5
  209. zfs_vdev_aggregation_limit 131072
  210. zfs_vdev_async_read_max_active 3
  211. zfs_vdev_async_read_min_active 1
  212. zfs_vdev_async_write_active_max_dirty_percent 60
  213. zfs_vdev_async_write_active_min_dirty_percent 30
  214. zfs_vdev_async_write_max_active 10
  215. zfs_vdev_async_write_min_active 2
  216. zfs_vdev_cache_bshift 16
  217. zfs_vdev_cache_max 16384
  218. zfs_vdev_cache_size 0
  219. zfs_vdev_max_active 1000
  220. zfs_vdev_mirror_non_rotating_inc 0
  221. zfs_vdev_mirror_non_rotating_seek_inc 1
  222. zfs_vdev_mirror_rotating_inc 0
  223. zfs_vdev_mirror_rotating_seek_inc 5
  224. zfs_vdev_mirror_rotating_seek_offset 1048576
  225. zfs_vdev_queue_depth_pct 1000
  226. zfs_vdev_raidz_impl [fastest] original scalar sse2 ssse3
  227. zfs_vdev_read_gap_limit 32768
  228. zfs_vdev_scheduler noop
  229. zfs_vdev_scrub_max_active 2
  230. zfs_vdev_scrub_min_active 1
  231. zfs_vdev_sync_read_max_active 10
  232. zfs_vdev_sync_read_min_active 10
  233. zfs_vdev_sync_write_max_active 10
  234. zfs_vdev_sync_write_min_active 10
  235. zfs_vdev_write_gap_limit 4096
  236. zfs_zevent_cols 80
  237. zfs_zevent_console 0
  238. zfs_zevent_len_max 640
  239. zil_replay_disable 0
  240. zil_slog_bulk 786432
  241. zio_delay_max 30000
  242. zio_dva_throttle_enabled 1
  243. zio_requeue_io_start_cut_in_line 1
  244. zio_taskq_batch_pct 75
  245. zvol_inhibit_dev 0
  246. zvol_major 230
  247. zvol_max_discard_blocks 16384
  248. zvol_prefetch_bytes 131072
  249. zvol_request_sync 0
  250. zvol_threads 32
  251. zvol_volmode 1
  252.  
  253. VDEV cache disabled, skipping section
  254.  
  255. ZIL committed transactions: 2.4M
  256. Commit requests: 179.3k
  257. Flushes to stable storage: 179.2k
  258. Transactions to SLOG storage pool: 0 Bytes 0
  259. Transactions to non-SLOG storage pool: 3.3 GiB 116.4k
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