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zfs-stats -a on FreeNAS 11.2, memory, L2 ARC, sysctl

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Jun 28th, 2020
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  1. [user@freenas /var/log]$ zfs-stats -a
  2. ------------------------------------------------------------------------
  3. sysctl: unknown oid 'kstat.zfs.misc.arcstats.l2_writes_hdr_miss'
  4. sysctl: unknown oid 'kstat.zfs.misc.arcstats.recycle_miss'
  5. sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.bogus_streams'
  6. sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.colinear_hits'
  7. sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.colinear_misses'
  8. sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.reclaim_failures'
  9. sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.reclaim_successes'
  10. sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.streams_noresets'
  11. sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.streams_resets'
  12. sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.stride_hits'
  13. sysctl: unknown oid 'kstat.zfs.misc.zfetchstats.stride_misses'
  14. ZFS Subsystem Report Sun Jun 28 10:00:41 2020
  15. ------------------------------------------------------------------------
  16. System Information:
  17.  
  18. Kernel Version: 1102500 (osreldate)
  19. Hardware Platform: amd64
  20. Processor Architecture: amd64
  21.  
  22. FreeBSD 11.2-STABLE #0 r325575+4710c8b6420(HEAD): Fri Feb 14 13:59:19 UTC 2020 root
  23. 10:00AM up 7 days, 12:15, 1 user, load averages: 0.24, 0.30, 0.24
  24. ------------------------------------------------------------------------
  25. System Memory Statistics:
  26. Physical Memory: 24528.12M
  27. Kernel Memory: 512.35M
  28. DATA: 91.90% 470.86M
  29. TEXT: 8.09% 41.48M
  30. ------------------------------------------------------------------------
  31. ZFS pool information:
  32. Storage pool Version (spa): 5000
  33. Filesystem Version (zpl): 5
  34. ------------------------------------------------------------------------
  35. ARC Misc:
  36. Deleted: 3161242
  37. Recycle Misses: 0
  38. Mutex Misses: 1403
  39. Evict Skips: 1403
  40.  
  41. ARC Size:
  42. Current Size (arcsize): 84.08% 17816.75M
  43. Target Size (Adaptive, c): 83.95% 17789.62M
  44. Min Size (Hard Limit, c_min): 13.48% 2858.40M
  45. Max Size (High Water, c_max): ~7:1 21189.47M
  46.  
  47. ARC Size Breakdown:
  48. Recently Used Cache Size (p): 91.51% 16305.61M
  49. Frequently Used Cache Size (arcsize-p): 8.48% 1511.14M
  50.  
  51. ARC Hash Breakdown:
  52. Elements Max: 730061
  53. Elements Current: 80.32% 586432
  54. Collisions: 1326463
  55. Chain Max: 0
  56. Chains: 37448
  57.  
  58. ARC Eviction Statistics:
  59. Evicts Total: 333045846528
  60. Evicts Eligible for L2: 85.01% 283139877376
  61. Evicts Ineligible for L2: 14.98% 49905969152
  62. Evicts Cached to L2: 16792139776
  63.  
  64. ARC Efficiency
  65. Cache Access Total: 1252682937
  66. Cache Hit Ratio: 97.96% 1227179483
  67. Cache Miss Ratio: 2.03% 25503454
  68. Actual Hit Ratio: 97.93% 1226773245
  69.  
  70. Data Demand Efficiency: 94.11%
  71. Data Prefetch Efficiency: 10.52%
  72.  
  73. CACHE HITS BY CACHE LIST:
  74. Anonymously Used: 0.02% 321631
  75. Most Recently Used (mru): 0.88% 10828074
  76. Most Frequently Used (mfu): 99.08% 1215945171
  77. MRU Ghost (mru_ghost): 0.00% 75395
  78. MFU Ghost (mfu_ghost): 0.00% 9212
  79.  
  80. CACHE HITS BY DATA TYPE:
  81. Demand Data: 1.48% 18226561
  82. Prefetch Data: 0.02% 245451
  83. Demand Metadata: 98.46% 1208290535
  84. Prefetch Metadata: 0.03% 416936
  85.  
  86. CACHE MISSES BY DATA TYPE:
  87. Demand Data: 4.47% 1140368
  88. Prefetch Data: 8.18% 2087576
  89. Demand Metadata: 85.63% 21838788
  90. Prefetch Metadata: 1.71% 436722
  91. ------------------------------------------------------------------------
  92. L2 ARC Summary:
  93. Low Memory Aborts: 2
  94. R/W Clashes: 0
  95. Free on Write: 5597
  96.  
  97. L2 ARC Size:
  98. Current Size: (Adaptive) 14934.30M
  99. Header Size: 0.12% 19.28M
  100.  
  101. L2 ARC Read/Write Activity:
  102. Bytes Written: 12861.05M
  103. Bytes Read: 829.47M
  104.  
  105. L2 ARC Breakdown:
  106. Access Total: 25496874
  107. Hit Ratio: 0.04% 12483
  108. Miss Ratio: 99.95% 25484391
  109. Feeds: 642128
  110.  
  111. WRITES:
  112. Sent Total: 100.00% 11760
  113. f_float_divide: 0 / 0: division by 0
  114. f_float_divide: 0 / 0: division by 0
  115. f_float_divide: 0 / 0: division by 0
  116. ------------------------------------------------------------------------
  117. VDEV Cache Summary:
  118. Access Total: 0
  119. Hits Ratio: 0.00% 0
  120. Miss Ratio: 0.00% 0
  121. Delegations: 0
  122. f_float_divide: 0 / 0: division by 0
  123. f_float_divide: 0 / 0: division by 0
  124. f_float_divide: 0 / 0: division by 0
  125. f_float_divide: 0 / 0: division by 0
  126. ------------------------------------------------------------------------
  127. File-Level Prefetch Stats (DMU):
  128.  
  129. DMU Efficiency:
  130. Access Total: 215544698
  131. Hit Ratio: 0.40% 881708
  132. Miss Ratio: 99.59% 214662990
  133.  
  134. Colinear Access Total: 0
  135. Colinear Hit Ratio: 0.00% 0
  136. Colinear Miss Ratio: 0.00% 0
  137.  
  138. Stride Access Total: 0
  139. Stride Hit Ratio: 0.00% 0
  140. Stride Miss Ratio: 0.00% 0
  141.  
  142. DMU misc:
  143. Reclaim successes: 0
  144. Reclaim failures: 0
  145. Stream resets: 0
  146. Stream noresets: 0
  147. Bogus streams: 0
  148. ------------------------------------------------------------------------
  149. ZFS Tunable (sysctl):
  150. kern.maxusers=1869
  151. vfs.zfs.vol.immediate_write_sz=32768
  152. vfs.zfs.vol.unmap_sync_enabled=0
  153. vfs.zfs.vol.unmap_enabled=1
  154. vfs.zfs.vol.recursive=0
  155. vfs.zfs.vol.mode=2
  156. vfs.zfs.sync_pass_rewrite=2
  157. vfs.zfs.sync_pass_dont_compress=5
  158. vfs.zfs.sync_pass_deferred_free=2
  159. vfs.zfs.zio.dva_throttle_enabled=1
  160. vfs.zfs.zio.exclude_metadata=0
  161. vfs.zfs.zio.use_uma=1
  162. vfs.zfs.zil_slog_bulk=786432
  163. vfs.zfs.cache_flush_disable=0
  164. vfs.zfs.zil_replay_disable=0
  165. vfs.zfs.version.zpl=5
  166. vfs.zfs.version.spa=5000
  167. vfs.zfs.version.acl=1
  168. vfs.zfs.version.ioctl=7
  169. vfs.zfs.debug=0
  170. vfs.zfs.super_owner=0
  171. vfs.zfs.immediate_write_sz=32768
  172. vfs.zfs.standard_sm_blksz=131072
  173. vfs.zfs.dtl_sm_blksz=4096
  174. vfs.zfs.min_auto_ashift=12
  175. vfs.zfs.max_auto_ashift=13
  176. vfs.zfs.vdev.queue_depth_pct=1000
  177. vfs.zfs.vdev.write_gap_limit=4096
  178. vfs.zfs.vdev.read_gap_limit=32768
  179. vfs.zfs.vdev.aggregation_limit_non_rotating=131072
  180. vfs.zfs.vdev.aggregation_limit=1048576
  181. vfs.zfs.vdev.trim_max_active=64
  182. vfs.zfs.vdev.trim_min_active=1
  183. vfs.zfs.vdev.scrub_max_active=2
  184. vfs.zfs.vdev.scrub_min_active=1
  185. vfs.zfs.vdev.async_write_max_active=10
  186. vfs.zfs.vdev.async_write_min_active=1
  187. vfs.zfs.vdev.async_read_max_active=3
  188. vfs.zfs.vdev.async_read_min_active=1
  189. vfs.zfs.vdev.sync_write_max_active=10
  190. vfs.zfs.vdev.sync_write_min_active=10
  191. vfs.zfs.vdev.sync_read_max_active=10
  192. vfs.zfs.vdev.sync_read_min_active=10
  193. vfs.zfs.vdev.max_active=1000
  194. vfs.zfs.vdev.async_write_active_max_dirty_percent=60
  195. vfs.zfs.vdev.async_write_active_min_dirty_percent=30
  196. vfs.zfs.vdev.mirror.non_rotating_seek_inc=1
  197. vfs.zfs.vdev.mirror.non_rotating_inc=0
  198. vfs.zfs.vdev.mirror.rotating_seek_offset=1048576
  199. vfs.zfs.vdev.mirror.rotating_seek_inc=5
  200. vfs.zfs.vdev.mirror.rotating_inc=0
  201. vfs.zfs.vdev.trim_on_init=1
  202. vfs.zfs.vdev.bio_delete_disable=0
  203. vfs.zfs.vdev.bio_flush_disable=0
  204. vfs.zfs.vdev.cache.bshift=16
  205. vfs.zfs.vdev.cache.size=0
  206. vfs.zfs.vdev.cache.max=16384
  207. vfs.zfs.vdev.default_ms_shift=29
  208. vfs.zfs.vdev.min_ms_count=16
  209. vfs.zfs.vdev.max_ms_count=200
  210. vfs.zfs.vdev.trim_max_pending=10000
  211. vfs.zfs.txg.timeout=5
  212. vfs.zfs.trim.enabled=1
  213. vfs.zfs.trim.max_interval=1
  214. vfs.zfs.trim.timeout=30
  215. vfs.zfs.trim.txg_delay=32
  216. vfs.zfs.spa_min_slop=134217728
  217. vfs.zfs.spa_slop_shift=5
  218. vfs.zfs.spa_asize_inflation=24
  219. vfs.zfs.deadman_enabled=1
  220. vfs.zfs.deadman_checktime_ms=5000
  221. vfs.zfs.deadman_synctime_ms=1000000
  222. vfs.zfs.debug_flags=0
  223. vfs.zfs.debugflags=0
  224. vfs.zfs.recover=0
  225. vfs.zfs.spa_load_verify_data=1
  226. vfs.zfs.spa_load_verify_metadata=1
  227. vfs.zfs.spa_load_verify_maxinflight=10000
  228. vfs.zfs.max_missing_tvds_scan=0
  229. vfs.zfs.max_missing_tvds_cachefile=2
  230. vfs.zfs.max_missing_tvds=0
  231. vfs.zfs.spa_load_print_vdev_tree=0
  232. vfs.zfs.ccw_retry_interval=300
  233. vfs.zfs.check_hostid=1
  234. vfs.zfs.mg_fragmentation_threshold=85
  235. vfs.zfs.mg_noalloc_threshold=0
  236. vfs.zfs.condense_pct=200
  237. vfs.zfs.metaslab_sm_blksz=4096
  238. vfs.zfs.metaslab.bias_enabled=1
  239. vfs.zfs.metaslab.lba_weighting_enabled=1
  240. vfs.zfs.metaslab.fragmentation_factor_enabled=1
  241. vfs.zfs.metaslab.preload_enabled=1
  242. vfs.zfs.metaslab.preload_limit=3
  243. vfs.zfs.metaslab.unload_delay=8
  244. vfs.zfs.metaslab.load_pct=50
  245. vfs.zfs.metaslab.min_alloc_size=33554432
  246. vfs.zfs.metaslab.df_free_pct=4
  247. vfs.zfs.metaslab.df_alloc_threshold=131072
  248. vfs.zfs.metaslab.debug_unload=0
  249. vfs.zfs.metaslab.debug_load=0
  250. vfs.zfs.metaslab.fragmentation_threshold=70
  251. vfs.zfs.metaslab.force_ganging=16777217
  252. vfs.zfs.free_bpobj_enabled=1
  253. vfs.zfs.free_max_blocks=18446744073709551615
  254. vfs.zfs.zfs_scan_checkpoint_interval=7200
  255. vfs.zfs.zfs_scan_legacy=0
  256. vfs.zfs.no_scrub_prefetch=0
  257. vfs.zfs.no_scrub_io=0
  258. vfs.zfs.resilver_min_time_ms=3000
  259. vfs.zfs.free_min_time_ms=1000
  260. vfs.zfs.scan_min_time_ms=1000
  261. vfs.zfs.scan_idle=50
  262. vfs.zfs.scrub_delay=4
  263. vfs.zfs.resilver_delay=2
  264. vfs.zfs.top_maxinflight=32
  265. vfs.zfs.delay_scale=500000
  266. vfs.zfs.delay_min_dirty_percent=60
  267. vfs.zfs.dirty_data_sync=67108864
  268. vfs.zfs.dirty_data_max_percent=10
  269. vfs.zfs.dirty_data_max_max=4294967296
  270. vfs.zfs.dirty_data_max=2571960729
  271. vfs.zfs.max_recordsize=1048576
  272. vfs.zfs.default_ibs=15
  273. vfs.zfs.default_bs=9
  274. vfs.zfs.zfetch.array_rd_sz=1048576
  275. vfs.zfs.zfetch.max_idistance=67108864
  276. vfs.zfs.zfetch.max_distance=33554432
  277. vfs.zfs.zfetch.min_sec_reap=2
  278. vfs.zfs.zfetch.max_streams=8
  279. vfs.zfs.prefetch_disable=0
  280. vfs.zfs.send_holes_without_birth_time=1
  281. vfs.zfs.mdcomp_disable=0
  282. vfs.zfs.per_txg_dirty_frees_percent=30
  283. vfs.zfs.nopwrite_enabled=1
  284. vfs.zfs.dedup.prefetch=1
  285. vfs.zfs.dbuf_cache_lowater_pct=10
  286. vfs.zfs.dbuf_cache_hiwater_pct=10
  287. vfs.zfs.dbuf_cache_shift=5
  288. vfs.zfs.dbuf_cache_max_bytes=749312512
  289. vfs.zfs.arc_min_prescient_prefetch_ms=6
  290. vfs.zfs.arc_min_prefetch_ms=1
  291. vfs.zfs.l2c_only_size=0
  292. vfs.zfs.mfu_ghost_data_esize=262144
  293. vfs.zfs.mfu_ghost_metadata_esize=15560212480
  294. vfs.zfs.mfu_ghost_size=15560474624
  295. vfs.zfs.mfu_data_esize=976678912
  296. vfs.zfs.mfu_metadata_esize=262909952
  297. vfs.zfs.mfu_size=2472223744
  298. vfs.zfs.mru_ghost_data_esize=2383580672
  299. vfs.zfs.mru_ghost_metadata_esize=709062656
  300. vfs.zfs.mru_ghost_size=3092643328
  301. vfs.zfs.mru_data_esize=15120114688
  302. vfs.zfs.mru_metadata_esize=15618560
  303. vfs.zfs.mru_size=15634400768
  304. vfs.zfs.anon_data_esize=0
  305. vfs.zfs.anon_metadata_esize=0
  306. vfs.zfs.anon_size=3772928
  307. vfs.zfs.l2arc_norw=0
  308. vfs.zfs.l2arc_feed_again=1
  309. vfs.zfs.l2arc_noprefetch=0
  310. vfs.zfs.l2arc_feed_min_ms=200
  311. vfs.zfs.l2arc_feed_secs=1
  312. vfs.zfs.l2arc_headroom=2
  313. vfs.zfs.l2arc_write_boost=40000000
  314. vfs.zfs.l2arc_write_max=10000000
  315. vfs.zfs.arc_meta_limit=5554693632
  316. vfs.zfs.arc_free_target=130345
  317. vfs.zfs.arc_kmem_cache_reap_retry_ms=1000
  318. vfs.zfs.compressed_arc_enabled=1
  319. vfs.zfs.arc_grow_retry=60
  320. vfs.zfs.arc_shrink_shift=7
  321. vfs.zfs.arc_average_blocksize=8192
  322. vfs.zfs.arc_no_grow_shift=5
  323. vfs.zfs.arc_min=2997250048
  324. vfs.zfs.arc_max=22218774528
  325. vfs.zfs.abd_chunk_size=4096
  326. vm.kmem_size=25051742208
  327. vm.kmem_size_scale=1
  328. vm.kmem_size_min=0
  329. vm.kmem_size_max=1319413950874
  330. ------------------------------------------------------------------------
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