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Mar 26th, 2023
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  1. root@freenas[~]# arc_summary
  2.  
  3. ------------------------------------------------------------------------
  4. ZFS Subsystem Report Sun Mar 26 21:23:17 2023
  5. FreeBSD 13.1-RELEASE-p7 zpl version 5
  6. Machine: freenas.local (amd64) spa version 5000
  7.  
  8. ARC status: HEALTHY
  9. Memory throttle count: 0
  10.  
  11. ARC size (current): 77.0 % 11.5 GiB
  12. Target size (adaptive): 76.9 % 11.5 GiB
  13. Min size (hard limit): 3.3 % 509.1 MiB
  14. Max size (high water): 29:1 14.9 GiB
  15. Most Frequently Used (MFU) cache size: 74.0 % 7.9 GiB
  16. Most Recently Used (MRU) cache size: 26.0 % 2.8 GiB
  17. Metadata cache size (hard limit): 75.0 % 11.2 GiB
  18. Metadata cache size (current): 10.5 % 1.2 GiB
  19. Dnode cache size (hard limit): 10.0 % 1.1 GiB
  20. Dnode cache size (current): 25.2 % 288.2 MiB
  21.  
  22. ARC hash breakdown:
  23. Elements max: 1.1M
  24. Elements current: 100.0 % 1.1M
  25. Collisions: 824.6k
  26. Chain max: 6
  27. Chains: 204.3k
  28.  
  29. ARC misc:
  30. Deleted: 858.7k
  31. Mutex misses: 24
  32. Eviction skips: 6.0k
  33. Eviction skips due to L2 writes: 0
  34. L2 cached evictions: 0 Bytes
  35. L2 eligible evictions: 21.7 GiB
  36. L2 eligible MFU evictions: 85.6 % 18.6 GiB
  37. L2 eligible MRU evictions: 14.4 % 3.1 GiB
  38. L2 ineligible evictions: 1.3 GiB
  39.  
  40. ARC total accesses (hits + misses): 70.1M
  41. Cache hit ratio: 97.3 % 68.2M
  42. Cache miss ratio: 2.7 % 1.9M
  43. Actual hit ratio (MFU + MRU hits): 97.2 % 68.2M
  44. Data demand efficiency: 99.6 % 21.9M
  45. Data prefetch efficiency: 1.4 % 1.7M
  46.  
  47. Cache hits by cache type:
  48. Most frequently used (MFU): 91.6 % 62.5M
  49. Most recently used (MRU): 8.3 % 5.7M
  50. Most frequently used (MFU) ghost: < 0.1 % 2.7k
  51. Most recently used (MRU) ghost: < 0.1 % 5.7k
  52. Anonymously used: < 0.1 % 27.5k
  53.  
  54. Cache hits by data type:
  55. Demand data: 31.9 % 21.8M
  56. Prefetch data: < 0.1 % 24.0k
  57. Demand metadata: 68.0 % 46.4M
  58. Prefetch metadata: < 0.1 % 24.1k
  59.  
  60. Cache misses by data type:
  61. Demand data: 4.4 % 84.6k
  62. Prefetch data: 87.7 % 1.7M
  63. Demand metadata: 6.1 % 117.4k
  64. Prefetch metadata: 1.7 % 33.3k
  65.  
  66. DMU prefetch efficiency: 17.5M
  67. Hit ratio: 5.3 % 922.1k
  68. Miss ratio: 94.7 % 16.6M
  69.  
  70. L2ARC not detected, skipping section
  71.  
  72. Tunables:
  73. abd_scatter_enabled 1
  74. abd_scatter_min_size 4097
  75. allow_redacted_dataset_mount 0
  76. anon_data_esize 0
  77. anon_metadata_esize 0
  78. anon_size 174592
  79. arc.average_blocksize 8192
  80. arc.dnode_limit 0
  81. arc.dnode_limit_percent 10
  82. arc.dnode_reduce_percent 10
  83. arc.evict_batch_limit 10
  84. arc.eviction_pct 200
  85. arc.grow_retry 0
  86. arc.lotsfree_percent 10
  87. arc.max 0
  88. arc.meta_adjust_restarts 4096
  89. arc.meta_limit 0
  90. arc.meta_limit_percent 75
  91. arc.meta_min 0
  92. arc.meta_prune 10000
  93. arc.meta_strategy 1
  94. arc.min 0
  95. arc.min_prefetch_ms 0
  96. arc.min_prescient_prefetch_ms 0
  97. arc.p_dampener_disable 1
  98. arc.p_min_shift 0
  99. arc.pc_percent 0
  100. arc.prune_task_threads 1
  101. arc.shrink_shift 0
  102. arc.sys_free 0
  103. arc_free_target 86548
  104. arc_max 0
  105. arc_min 0
  106. arc_no_grow_shift 5
  107. async_block_max_blocks 18446744073709551615
  108. autoimport_disable 1
  109. btree_verify_intensity 0
  110. ccw_retry_interval 300
  111. checksum_events_per_second 20
  112. commit_timeout_pct 5
  113. compressed_arc_enabled 1
  114. condense.indirect_commit_entry_delay_ms 0
  115. condense.indirect_obsolete_pct 25
  116. condense.indirect_vdevs_enable 1
  117. condense.max_obsolete_bytes 1073741824
  118. condense.min_mapping_bytes 131072
  119. condense_pct 200
  120. crypt_sessions 0
  121. dbgmsg_enable 1
  122. dbgmsg_maxsize 4194304
  123. dbuf.cache_shift 5
  124. dbuf.metadata_cache_max_bytes 18446744073709551615
  125. dbuf.metadata_cache_shift 6
  126. dbuf_cache.hiwater_pct 10
  127. dbuf_cache.lowater_pct 10
  128. dbuf_cache.max_bytes 18446744073709551615
  129. dbuf_state_index 0
  130. ddt_data_is_special 1
  131. deadman.checktime_ms 60000
  132. deadman.enabled 1
  133. deadman.failmode wait
  134. deadman.synctime_ms 600000
  135. deadman.ziotime_ms 300000
  136. debug 0
  137. debugflags 0
  138. dedup.prefetch 0
  139. default_bs 9
  140. default_ibs 15
  141. delay_min_dirty_percent 60
  142. delay_scale 500000
  143. dirty_data_max 1708282675
  144. dirty_data_max_max 4270706688
  145. dirty_data_max_max_percent 25
  146. dirty_data_max_percent 10
  147. dirty_data_sync_percent 20
  148. disable_ivset_guid_check 0
  149. dmu_object_alloc_chunk_shift 7
  150. dmu_offset_next_sync 1
  151. dmu_prefetch_max 134217728
  152. dtl_sm_blksz 4096
  153. embedded_slog_min_ms 64
  154. flags 0
  155. fletcher_4_impl [fastest] scalar superscalar superscalar4 sse2 ssse3
  156. free_bpobj_enabled 1
  157. free_leak_on_eio 0
  158. free_min_time_ms 1000
  159. history_output_max 1048576
  160. immediate_write_sz 32768
  161. initialize_chunk_size 1048576
  162. initialize_value 16045690984833335022
  163. keep_log_spacemaps_at_export 0
  164. l2arc.exclude_special 0
  165. l2arc.feed_again 1
  166. l2arc.feed_min_ms 200
  167. l2arc.feed_secs 1
  168. l2arc.headroom 2
  169. l2arc.headroom_boost 200
  170. l2arc.meta_percent 33
  171. l2arc.mfuonly 0
  172. l2arc.noprefetch 1
  173. l2arc.norw 0
  174. l2arc.rebuild_blocks_min_l2size 1073741824
  175. l2arc.rebuild_enabled 0
  176. l2arc.trim_ahead 0
  177. l2arc.write_boost 8388608
  178. l2arc.write_max 8388608
  179. l2arc_feed_again 1
  180. l2arc_feed_min_ms 200
  181. l2arc_feed_secs 1
  182. l2arc_headroom 2
  183. l2arc_noprefetch 1
  184. l2arc_norw 0
  185. l2arc_write_boost 8388608
  186. l2arc_write_max 8388608
  187. l2c_only_size 0
  188. livelist.condense.new_alloc 0
  189. livelist.condense.sync_cancel 0
  190. livelist.condense.sync_pause 0
  191. livelist.condense.zthr_cancel 0
  192. livelist.condense.zthr_pause 0
  193. livelist.max_entries 500000
  194. livelist.min_percent_shared 75
  195. lua.max_instrlimit 100000000
  196. lua.max_memlimit 104857600
  197. max_async_dedup_frees 100000
  198. max_auto_ashift 14
  199. max_dataset_nesting 50
  200. max_log_walking 5
  201. max_logsm_summary_length 10
  202. max_missing_tvds 0
  203. max_missing_tvds_cachefile 2
  204. max_missing_tvds_scan 0
  205. max_nvlist_src_size 0
  206. max_recordsize 1048576
  207. metaslab.aliquot 1048576
  208. metaslab.bias_enabled 1
  209. metaslab.debug_load 0
  210. metaslab.debug_unload 0
  211. metaslab.df_alloc_threshold 131072
  212. metaslab.df_free_pct 4
  213. metaslab.df_max_search 16777216
  214. metaslab.df_use_largest_segment 0
  215. metaslab.find_max_tries 100
  216. metaslab.force_ganging 16777217
  217. metaslab.fragmentation_factor_enabled 1
  218. metaslab.fragmentation_threshold 70
  219. metaslab.lba_weighting_enabled 1
  220. metaslab.load_pct 50
  221. metaslab.max_size_cache_sec 3600
  222. metaslab.mem_limit 25
  223. metaslab.preload_enabled 1
  224. metaslab.preload_limit 10
  225. metaslab.segment_weight_enabled 1
  226. metaslab.sm_blksz_no_log 16384
  227. metaslab.sm_blksz_with_log 131072
  228. metaslab.switch_threshold 2
  229. metaslab.try_hard_before_gang 0
  230. metaslab.unload_delay 32
  231. metaslab.unload_delay_ms 600000
  232. mfu_data_esize 7800386560
  233. mfu_ghost_data_esize 4928059904
  234. mfu_ghost_metadata_esize 1939706368
  235. mfu_ghost_size 6867766272
  236. mfu_metadata_esize 54440448
  237. mfu_size 8514936320
  238. mg.fragmentation_threshold 95
  239. mg.noalloc_threshold 0
  240. min_auto_ashift 9
  241. min_metaslabs_to_flush 1
  242. mru_data_esize 2613960704
  243. mru_ghost_data_esize 1869623296
  244. mru_ghost_metadata_esize 276985344
  245. mru_ghost_size 2146608640
  246. mru_metadata_esize 17804288
  247. mru_size 2996810752
  248. multihost.fail_intervals 10
  249. multihost.history 0
  250. multihost.import_intervals 20
  251. multihost.interval 1000
  252. multilist_num_sublists 0
  253. no_scrub_io 0
  254. no_scrub_prefetch 0
  255. nocacheflush 0
  256. nopwrite_enabled 1
  257. obsolete_min_time_ms 500
  258. pd_bytes_max 52428800
  259. per_txg_dirty_frees_percent 30
  260. prefetch.array_rd_sz 1048576
  261. prefetch.disable 0
  262. prefetch.max_distance 67108864
  263. prefetch.max_idistance 67108864
  264. prefetch.max_sec_reap 2
  265. prefetch.max_streams 8
  266. prefetch.min_distance 4194304
  267. prefetch.min_sec_reap 1
  268. read_history 0
  269. read_history_hits 0
  270. rebuild_max_segment 1048576
  271. rebuild_scrub_enabled 1
  272. rebuild_vdev_limit 33554432
  273. reconstruct.indirect_combinations_max 4096
  274. recover 0
  275. recv.queue_ff 20
  276. recv.queue_length 16777216
  277. recv.write_batch_size 1048576
  278. removal_suspend_progress 0
  279. remove_max_segment 16777216
  280. resilver_disable_defer 0
  281. resilver_min_time_ms 3000
  282. scan_blkstats 0
  283. scan_checkpoint_intval 7200
  284. scan_fill_weight 3
  285. scan_ignore_errors 0
  286. scan_issue_strategy 0
  287. scan_legacy 0
  288. scan_max_ext_gap 2097152
  289. scan_mem_lim_fact 20
  290. scan_mem_lim_soft_fact 20
  291. scan_strict_mem_lim 0
  292. scan_suspend_progress 0
  293. scan_vdev_limit 4194304
  294. scrub_min_time_ms 1000
  295. send.corrupt_data 0
  296. send.no_prefetch_queue_ff 20
  297. send.no_prefetch_queue_length 1048576
  298. send.override_estimate_recordsize 0
  299. send.queue_ff 20
  300. send.queue_length 16777216
  301. send.unmodified_spill_blocks 1
  302. send_holes_without_birth_time 1
  303. slow_io_events_per_second 20
  304. spa.asize_inflation 24
  305. spa.discard_memory_limit 16777216
  306. spa.load_print_vdev_tree 0
  307. spa.load_verify_data 1
  308. spa.load_verify_metadata 1
  309. spa.load_verify_shift 4
  310. spa.slop_shift 5
  311. space_map_ibs 14
  312. special_class_metadata_reserve_pct 25
  313. standard_sm_blksz 131072
  314. super_owner 0
  315. sync_pass_deferred_free 2
  316. sync_pass_dont_compress 8
  317. sync_pass_rewrite 2
  318. sync_taskq_batch_pct 75
  319. top_maxinflight 1000
  320. traverse_indirect_prefetch_limit 32
  321. trim.extent_bytes_max 134217728
  322. trim.extent_bytes_min 32768
  323. trim.metaslab_skip 0
  324. trim.queue_limit 10
  325. trim.txg_batch 32
  326. txg.history 100
  327. txg.timeout 5
  328. unflushed_log_block_max 131072
  329. unflushed_log_block_min 1000
  330. unflushed_log_block_pct 400
  331. unflushed_log_txg_max 1000
  332. unflushed_max_mem_amt 1073741824
  333. unflushed_max_mem_ppm 1000
  334. user_indirect_is_special 1
  335. validate_skip 0
  336. vdev.aggregate_trim 0
  337. vdev.aggregation_limit 1048576
  338. vdev.aggregation_limit_non_rotating 131072
  339. vdev.async_read_max_active 3
  340. vdev.async_read_min_active 1
  341. vdev.async_write_active_max_dirty_percent 60
  342. vdev.async_write_active_min_dirty_percent 30
  343. vdev.async_write_max_active 5
  344. vdev.async_write_min_active 1
  345. vdev.bio_delete_disable 0
  346. vdev.bio_flush_disable 0
  347. vdev.cache_bshift 16
  348. vdev.cache_max 16384
  349. vdev.cache_size 0
  350. vdev.def_queue_depth 32
  351. vdev.default_ms_count 200
  352. vdev.default_ms_shift 29
  353. vdev.file.logical_ashift 9
  354. vdev.file.physical_ashift 9
  355. vdev.initializing_max_active 1
  356. vdev.initializing_min_active 1
  357. vdev.max_active 1000
  358. vdev.max_auto_ashift 14
  359. vdev.min_auto_ashift 9
  360. vdev.min_ms_count 16
  361. vdev.mirror.non_rotating_inc 0
  362. vdev.mirror.non_rotating_seek_inc 1
  363. vdev.mirror.rotating_inc 0
  364. vdev.mirror.rotating_seek_inc 5
  365. vdev.mirror.rotating_seek_offset 1048576
  366. vdev.ms_count_limit 131072
  367. vdev.nia_credit 5
  368. vdev.nia_delay 5
  369. vdev.queue_depth_pct 1000
  370. vdev.read_gap_limit 32768
  371. vdev.rebuild_max_active 3
  372. vdev.rebuild_min_active 1
  373. vdev.removal_ignore_errors 0
  374. vdev.removal_max_active 2
  375. vdev.removal_max_span 32768
  376. vdev.removal_min_active 1
  377. vdev.removal_suspend_progress 0
  378. vdev.remove_max_segment 16777216
  379. vdev.scrub_max_active 3
  380. vdev.scrub_min_active 1
  381. vdev.sync_read_max_active 10
  382. vdev.sync_read_min_active 10
  383. vdev.sync_write_max_active 10
  384. vdev.sync_write_min_active 10
  385. vdev.trim_max_active 2
  386. vdev.trim_min_active 1
  387. vdev.validate_skip 0
  388. vdev.write_gap_limit 4096
  389. version.acl 1
  390. version.ioctl 15
  391. version.module v2023012500-zfs_9ef0b67f8
  392. version.spa 5000
  393. version.zpl 5
  394. vnops.read_chunk_size 1048576
  395. vol.mode 2
  396. vol.recursive 0
  397. vol.unmap_enabled 1
  398. wrlog_data_max 3416565350
  399. xattr_compat 1
  400. zap_iterate_prefetch 1
  401. zevent.len_max 512
  402. zevent.retain_expire_secs 900
  403. zevent.retain_max 2000
  404. zfetch.max_distance 67108864
  405. zfetch.max_idistance 67108864
  406. zil.clean_taskq_maxalloc 1048576
  407. zil.clean_taskq_minalloc 1024
  408. zil.clean_taskq_nthr_pct 100
  409. zil.maxblocksize 131072
  410. zil.nocacheflush 0
  411. zil.replay_disable 0
  412. zil.slog_bulk 786432
  413. zio.deadman_log_all 0
  414. zio.dva_throttle_enabled 1
  415. zio.exclude_metadata 0
  416. zio.requeue_io_start_cut_in_line 1
  417. zio.slow_io_ms 30000
  418. zio.taskq_batch_pct 80
  419. zio.taskq_batch_tpq 0
  420. zio.use_uma 1
  421.  
  422. VDEV cache disabled, skipping section
  423.  
  424. ZIL committed transactions: 204.0k
  425. Commit requests: 2.1k
  426. Flushes to stable storage: 2.1k
  427. Transactions to SLOG storage pool: 0 Bytes 0
  428. Transactions to non-SLOG storage pool: 159.4 MiB 3.0k
  429.  
  430. root@freenas[~]#
  431.  
  432.  
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