API tools faq
paste
guilhermerauth

arc_summary

guilhermerauth
Jul 15th, 2025
40
0
Never
Add comment
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
text 32.19 KB | None | 0 0
raw download clone embed print report
  1. ZFS Subsystem Report Tue Jul 15 11:25:35 2025
  2. Linux 6.8.12-4-pve 2.2.6-pve1
  3. Machine: pbs002 (x86_64) 2.2.6-pve1
  4.  
  5. ARC status: HEALTHY
  6. Memory throttle count: 0
  7.  
  8. ARC size (current): 98.9 % 93.3 GiB
  9. Target size (adaptive): 100.0 % 94.4 GiB
  10. Min size (hard limit): 6.2 % 5.9 GiB
  11. Max size (high water): 16:1 94.4 GiB
  12. Anonymous data size: 0.0 % 0 Bytes
  13. Anonymous metadata size: 0.0 % 0 Bytes
  14. MFU data target: 13.1 % 9.9 GiB
  15. MFU data size: 26.3 % 19.9 GiB
  16. MFU ghost data size: 28.4 GiB
  17. MFU metadata target: 39.5 % 29.8 GiB
  18. MFU metadata size: 35.1 % 26.5 GiB
  19. MFU ghost metadata size: 10.7 GiB
  20. MRU data target: 10.6 % 8.0 GiB
  21. MRU data size: 23.2 % 17.5 GiB
  22. MRU ghost data size: 30.2 GiB
  23. MRU metadata target: 36.7 % 27.8 GiB
  24. MRU metadata size: 15.5 % 11.7 GiB
  25. MRU ghost metadata size: 15.3 GiB
  26. Uncached data size: 0.0 % 0 Bytes
  27. Uncached metadata size: 0.0 % 0 Bytes
  28. Bonus size: 3.2 % 3.0 GiB
  29. Dnode cache target: 10.0 % 9.4 GiB
  30. Dnode cache size: 101.3 % 9.6 GiB
  31. Dbuf size: 4.3 % 4.0 GiB
  32. Header size: 1.3 % 1.2 GiB
  33. L2 header size: 0.0 % 0 Bytes
  34. ABD chunk waste size: < 0.1 % 2.1 MiB
  35.  
  36. ARC hash breakdown:
  37. Elements max: 10.9M
  38. Elements current: 49.7 % 5.4M
  39. Collisions: 163.8M
  40. Chain max: 8
  41. Chains: 395.1k
  42.  
  43. ARC misc:
  44. Deleted: 690.9M
  45. Mutex misses: 72.7k
  46. Eviction skips: 1.3k
  47. Eviction skips due to L2 writes: 0
  48. L2 cached evictions: 0 Bytes
  49. L2 eligible evictions: 78.3 TiB
  50. L2 eligible MFU evictions: 1.6 % 1.3 TiB
  51. L2 eligible MRU evictions: 98.4 % 77.1 TiB
  52. L2 ineligible evictions: 4.1 TiB
  53.  
  54. ARC total accesses: 4.9G
  55. Total hits: 96.0 % 4.7G
  56. Total I/O hits: 0.2 % 12.3M
  57. Total misses: 3.8 % 185.3M
  58.  
  59. ARC demand data accesses: 3.4 % 166.8M
  60. Demand data hits: 56.5 % 94.2M
  61. Demand data I/O hits: 7.3 % 12.2M
  62. Demand data misses: 36.2 % 60.4M
  63.  
  64. ARC demand metadata accesses: 94.0 % 4.6G
  65. Demand metadata hits: 99.0 % 4.6G
  66. Demand metadata I/O hits: < 0.1 % 139.3k
  67. Demand metadata misses: 1.0 % 48.5M
  68.  
  69. ARC prefetch data accesses: 0.8 % 40.8M
  70. Prefetch data hits: < 0.1 % 15.8k
  71. Prefetch data I/O hits: 0.0 % 0
  72. Prefetch data misses: 100.0 % 40.8M
  73.  
  74. ARC prefetch metadata accesses: 1.8 % 88.4M
  75. Prefetch metadata hits: 59.8 % 52.9M
  76. Prefetch metadata I/O hits: < 0.1 % 6.4k
  77. Prefetch metadata misses: 40.2 % 35.5M
  78.  
  79. ARC predictive prefetches: 40.7 % 52.6M
  80. Demand hits after predictive: 76.6 % 40.3M
  81. Demand I/O hits after predictive: 23.4 % 12.3M
  82. Never demanded after predictive: 0.1 % 39.5k
  83.  
  84. ARC prescient prefetches: 59.3 % 76.7M
  85. Demand hits after prescient: 50.4 % 38.6M
  86. Demand I/O hits after prescient: < 0.1 % 29.8k
  87. Never demanded after prescient: 49.6 % 38.0M
  88.  
  89. ARC states hits of all accesses:
  90. Most frequently used (MFU): 84.5 % 4.2G
  91. Most recently used (MRU): 11.5 % 568.3M
  92. Most frequently used (MFU) ghost: 0.1 % 4.7M
  93. Most recently used (MRU) ghost: 0.1 % 4.3M
  94. Uncached: 0.0 % 0
  95.  
  96. DMU predictive prefetcher calls: 148.4M
  97. Stream hits: 11.0 % 16.3M
  98. Hits ahead of stream: 24.0 % 35.6M
  99. Hits behind stream: 35.8 % 53.1M
  100. Stream misses: 29.2 % 43.4M
  101. Streams limit reached: < 0.1 % 1
  102. Stream strides: 1.5M
  103. Prefetches issued 40.9M
  104.  
  105. L2ARC not detected, skipping section
  106.  
  107. Solaris Porting Layer (SPL):
  108. spl_hostid 0
  109. spl_hostid_path /etc/hostid
  110. spl_kmem_alloc_max 1048576
  111. spl_kmem_alloc_warn 65536
  112. spl_kmem_cache_kmem_threads 4
  113. spl_kmem_cache_magazine_size 0
  114. spl_kmem_cache_max_size 32
  115. spl_kmem_cache_obj_per_slab 8
  116. spl_kmem_cache_slab_limit 16384
  117. spl_max_show_tasks 512
  118. spl_panic_halt 0
  119. spl_schedule_hrtimeout_slack_us 0
  120. spl_taskq_kick 0
  121. spl_taskq_thread_bind 0
  122. spl_taskq_thread_dynamic 1
  123. spl_taskq_thread_priority 1
  124. spl_taskq_thread_sequential 4
  125. spl_taskq_thread_timeout_ms 5000
  126.  
  127. Tunables:
  128. brt_zap_default_bs 12
  129. brt_zap_default_ibs 12
  130. brt_zap_prefetch 1
  131. dbuf_cache_hiwater_pct 10
  132. dbuf_cache_lowater_pct 10
  133. dbuf_cache_max_bytes 18446744073709551615
  134. dbuf_cache_shift 5
  135. dbuf_metadata_cache_max_bytes 18446744073709551615
  136. dbuf_metadata_cache_shift 6
  137. dbuf_mutex_cache_shift 0
  138. ddt_zap_default_bs 15
  139. ddt_zap_default_ibs 15
  140. dmu_object_alloc_chunk_shift 7
  141. dmu_prefetch_max 134217728
  142. icp_aes_impl cycle [fastest] generic x86_64 aesni
  143. icp_gcm_avx_chunk_size 32736
  144. icp_gcm_impl cycle [fastest] avx generic pclmulqdq
  145. ignore_hole_birth 1
  146. l2arc_exclude_special 0
  147. l2arc_feed_again 1
  148. l2arc_feed_min_ms 200
  149. l2arc_feed_secs 1
  150. l2arc_headroom 2
  151. l2arc_headroom_boost 200
  152. l2arc_meta_percent 33
  153. l2arc_mfuonly 0
  154. l2arc_noprefetch 1
  155. l2arc_norw 0
  156. l2arc_rebuild_blocks_min_l2size 1073741824
  157. l2arc_rebuild_enabled 1
  158. l2arc_trim_ahead 0
  159. l2arc_write_boost 8388608
  160. l2arc_write_max 8388608
  161. metaslab_aliquot 1048576
  162. metaslab_bias_enabled 1
  163. metaslab_debug_load 0
  164. metaslab_debug_unload 0
  165. metaslab_df_max_search 16777216
  166. metaslab_df_use_largest_segment 0
  167. metaslab_force_ganging 16777217
  168. metaslab_force_ganging_pct 3
  169. metaslab_fragmentation_factor_enabled 1
  170. metaslab_lba_weighting_enabled 1
  171. metaslab_preload_enabled 1
  172. metaslab_preload_limit 10
  173. metaslab_preload_pct 50
  174. metaslab_unload_delay 32
  175. metaslab_unload_delay_ms 600000
  176. send_holes_without_birth_time 1
  177. spa_asize_inflation 24
  178. spa_config_path /etc/zfs/zpool.cache
  179. spa_load_print_vdev_tree 0
  180. spa_load_verify_data 1
  181. spa_load_verify_metadata 1
  182. spa_load_verify_shift 4
  183. spa_slop_shift 5
  184. spa_upgrade_errlog_limit 0
  185. vdev_file_logical_ashift 9
  186. vdev_file_physical_ashift 9
  187. vdev_removal_max_span 32768
  188. vdev_validate_skip 0
  189. zap_iterate_prefetch 1
  190. zap_micro_max_size 131072
  191. zfetch_hole_shift 2
  192. zfetch_max_distance 67108864
  193. zfetch_max_idistance 67108864
  194. zfetch_max_reorder 16777216
  195. zfetch_max_sec_reap 2
  196. zfetch_max_streams 8
  197. zfetch_min_distance 4194304
  198. zfetch_min_sec_reap 1
  199. zfs_abd_scatter_enabled 1
  200. zfs_abd_scatter_max_order 9
  201. zfs_abd_scatter_min_size 1536
  202. zfs_admin_snapshot 0
  203. zfs_allow_redacted_dataset_mount 0
  204. zfs_arc_average_blocksize 8192
  205. zfs_arc_dnode_limit 0
  206. zfs_arc_dnode_limit_percent 10
  207. zfs_arc_dnode_reduce_percent 10
  208. zfs_arc_evict_batch_limit 10
  209. zfs_arc_eviction_pct 200
  210. zfs_arc_grow_retry 0
  211. zfs_arc_lotsfree_percent 10
  212. zfs_arc_max 0
  213. zfs_arc_meta_balance 500
  214. zfs_arc_min 0
  215. zfs_arc_min_prefetch_ms 0
  216. zfs_arc_min_prescient_prefetch_ms 0
  217. zfs_arc_pc_percent 0
  218. zfs_arc_prune_task_threads 1
  219. zfs_arc_shrink_shift 0
  220. zfs_arc_shrinker_limit 10000
  221. zfs_arc_sys_free 0
  222. zfs_async_block_max_blocks 18446744073709551615
  223. zfs_autoimport_disable 1
  224. zfs_bclone_enabled 0
  225. zfs_bclone_wait_dirty 0
  226. zfs_blake3_impl cycle [fastest] generic sse2 sse41
  227. zfs_btree_verify_intensity 0
  228. zfs_checksum_events_per_second 20
  229. zfs_commit_timeout_pct 10
  230. zfs_compressed_arc_enabled 1
  231. zfs_condense_indirect_commit_entry_delay_ms 0
  232. zfs_condense_indirect_obsolete_pct 25
  233. zfs_condense_indirect_vdevs_enable 1
  234. zfs_condense_max_obsolete_bytes 1073741824
  235. zfs_condense_min_mapping_bytes 131072
  236. zfs_dbgmsg_enable 1
  237. zfs_dbgmsg_maxsize 4194304
  238. zfs_dbuf_state_index 0
  239. zfs_ddt_data_is_special 1
  240. zfs_deadman_checktime_ms 60000
  241. zfs_deadman_enabled 1
  242. zfs_deadman_failmode wait
  243. zfs_deadman_synctime_ms 600000
  244. zfs_deadman_ziotime_ms 300000
  245. zfs_dedup_prefetch 0
  246. zfs_default_bs 9
  247. zfs_default_ibs 17
  248. zfs_delay_min_dirty_percent 60
  249. zfs_delay_scale 500000
  250. zfs_delete_blocks 20480
  251. zfs_dirty_data_max 4294967296
  252. zfs_dirty_data_max_max 4294967296
  253. zfs_dirty_data_max_max_percent 25
  254. zfs_dirty_data_max_percent 10
  255. zfs_dirty_data_sync_percent 20
  256. zfs_disable_ivset_guid_check 0
  257. zfs_dmu_offset_next_sync 1
  258. zfs_embedded_slog_min_ms 64
  259. zfs_expire_snapshot 300
  260. zfs_fallocate_reserve_percent 110
  261. zfs_flags 0
  262. zfs_fletcher_4_impl [fastest] scalar superscalar superscalar4 sse2 ssse3
  263. zfs_free_bpobj_enabled 1
  264. zfs_free_leak_on_eio 0
  265. zfs_free_min_time_ms 1000
  266. zfs_history_output_max 1048576
  267. zfs_immediate_write_sz 32768
  268. zfs_initialize_chunk_size 1048576
  269. zfs_initialize_value 16045690984833335022
  270. zfs_keep_log_spacemaps_at_export 0
  271. zfs_key_max_salt_uses 400000000
  272. zfs_livelist_condense_new_alloc 0
  273. zfs_livelist_condense_sync_cancel 0
  274. zfs_livelist_condense_sync_pause 0
  275. zfs_livelist_condense_zthr_cancel 0
  276. zfs_livelist_condense_zthr_pause 0
  277. zfs_livelist_max_entries 500000
  278. zfs_livelist_min_percent_shared 75
  279. zfs_lua_max_instrlimit 100000000
  280. zfs_lua_max_memlimit 104857600
  281. zfs_max_async_dedup_frees 100000
  282. zfs_max_dataset_nesting 50
  283. zfs_max_log_walking 5
  284. zfs_max_logsm_summary_length 10
  285. zfs_max_missing_tvds 0
  286. zfs_max_nvlist_src_size 0
  287. zfs_max_recordsize 16777216
  288. zfs_metaslab_find_max_tries 100
  289. zfs_metaslab_fragmentation_threshold 70
  290. zfs_metaslab_max_size_cache_sec 3600
  291. zfs_metaslab_mem_limit 25
  292. zfs_metaslab_segment_weight_enabled 1
  293. zfs_metaslab_switch_threshold 2
  294. zfs_metaslab_try_hard_before_gang 0
  295. zfs_mg_fragmentation_threshold 95
  296. zfs_mg_noalloc_threshold 0
  297. zfs_min_metaslabs_to_flush 1
  298. zfs_multihost_fail_intervals 10
  299. zfs_multihost_history 0
  300. zfs_multihost_import_intervals 20
  301. zfs_multihost_interval 1000
  302. zfs_multilist_num_sublists 0
  303. zfs_no_scrub_io 0
  304. zfs_no_scrub_prefetch 0
  305. zfs_nocacheflush 0
  306. zfs_nopwrite_enabled 1
  307. zfs_object_mutex_size 64
  308. zfs_obsolete_min_time_ms 500
  309. zfs_override_estimate_recordsize 0
  310. zfs_pd_bytes_max 52428800
  311. zfs_per_txg_dirty_frees_percent 30
  312. zfs_prefetch_disable 0
  313. zfs_read_history 0
  314. zfs_read_history_hits 0
  315. zfs_rebuild_max_segment 1048576
  316. zfs_rebuild_scrub_enabled 1
  317. zfs_rebuild_vdev_limit 67108864
  318. zfs_reconstruct_indirect_combinations_max 4096
  319. zfs_recover 0
  320. zfs_recv_best_effort_corrective 0
  321. zfs_recv_queue_ff 20
  322. zfs_recv_queue_length 16777216
  323. zfs_recv_write_batch_size 1048576
  324. zfs_removal_ignore_errors 0
  325. zfs_removal_suspend_progress 0
  326. zfs_remove_max_segment 16777216
  327. zfs_resilver_disable_defer 0
  328. zfs_resilver_min_time_ms 3000
  329. zfs_scan_blkstats 0
  330. zfs_scan_checkpoint_intval 7200
  331. zfs_scan_fill_weight 3
  332. zfs_scan_ignore_errors 0
  333. zfs_scan_issue_strategy 0
  334. zfs_scan_legacy 0
  335. zfs_scan_max_ext_gap 2097152
  336. zfs_scan_mem_lim_fact 20
  337. zfs_scan_mem_lim_soft_fact 20
  338. zfs_scan_report_txgs 0
  339. zfs_scan_strict_mem_lim 0
  340. zfs_scan_suspend_progress 0
  341. zfs_scan_vdev_limit 16777216
  342. zfs_scrub_error_blocks_per_txg 4096
  343. zfs_scrub_min_time_ms 1000
  344. zfs_send_corrupt_data 0
  345. zfs_send_no_prefetch_queue_ff 20
  346. zfs_send_no_prefetch_queue_length 1048576
  347. zfs_send_queue_ff 20
  348. zfs_send_queue_length 16777216
  349. zfs_send_unmodified_spill_blocks 1
  350. zfs_sha256_impl cycle [fastest] generic x64 ssse3 avx
  351. zfs_sha512_impl cycle [fastest] generic x64 avx
  352. zfs_slow_io_events_per_second 20
  353. zfs_snapshot_history_enabled 1
  354. zfs_spa_discard_memory_limit 16777216
  355. zfs_special_class_metadata_reserve_pct 25
  356. zfs_sync_pass_deferred_free 2
  357. zfs_sync_pass_dont_compress 8
  358. zfs_sync_pass_rewrite 2
  359. zfs_sync_taskq_batch_pct 75
  360. zfs_traverse_indirect_prefetch_limit 32
  361. zfs_trim_extent_bytes_max 134217728
  362. zfs_trim_extent_bytes_min 32768
  363. zfs_trim_metaslab_skip 0
  364. zfs_trim_queue_limit 10
  365. zfs_trim_txg_batch 32
  366. zfs_txg_history 100
  367. zfs_txg_timeout 5
  368. zfs_unflushed_log_block_max 131072
  369. zfs_unflushed_log_block_min 1000
  370. zfs_unflushed_log_block_pct 400
  371. zfs_unflushed_log_txg_max 1000
  372. zfs_unflushed_max_mem_amt 1073741824
  373. zfs_unflushed_max_mem_ppm 1000
  374. zfs_unlink_suspend_progress 0
  375. zfs_user_indirect_is_special 1
  376. zfs_vdev_aggregation_limit 1048576
  377. zfs_vdev_aggregation_limit_non_rotating 131072
  378. zfs_vdev_async_read_max_active 3
  379. zfs_vdev_async_read_min_active 1
  380. zfs_vdev_async_write_active_max_dirty_percent 60
  381. zfs_vdev_async_write_active_min_dirty_percent 30
  382. zfs_vdev_async_write_max_active 10
  383. zfs_vdev_async_write_min_active 2
  384. zfs_vdev_def_queue_depth 32
  385. zfs_vdev_default_ms_count 200
  386. zfs_vdev_default_ms_shift 29
  387. zfs_vdev_disk_classic 1
  388. zfs_vdev_disk_max_segs 0
  389. zfs_vdev_failfast_mask 1
  390. zfs_vdev_initializing_max_active 1
  391. zfs_vdev_initializing_min_active 1
  392. zfs_vdev_max_active 1000
  393. zfs_vdev_max_auto_ashift 14
  394. zfs_vdev_max_ms_shift 34
  395. zfs_vdev_min_auto_ashift 9
  396. zfs_vdev_min_ms_count 16
  397. zfs_vdev_mirror_non_rotating_inc 0
  398. zfs_vdev_mirror_non_rotating_seek_inc 1
  399. zfs_vdev_mirror_rotating_inc 0
  400. zfs_vdev_mirror_rotating_seek_inc 5
  401. zfs_vdev_mirror_rotating_seek_offset 1048576
  402. zfs_vdev_ms_count_limit 131072
  403. zfs_vdev_nia_credit 5
  404. zfs_vdev_nia_delay 5
  405. zfs_vdev_open_timeout_ms 1000
  406. zfs_vdev_queue_depth_pct 1000
  407. zfs_vdev_raidz_impl cycle [fastest] original scalar sse2 ssse3
  408. zfs_vdev_read_gap_limit 32768
  409. zfs_vdev_rebuild_max_active 3
  410. zfs_vdev_rebuild_min_active 1
  411. zfs_vdev_removal_max_active 2
  412. zfs_vdev_removal_min_active 1
  413. zfs_vdev_scheduler unused
  414. zfs_vdev_scrub_max_active 3
  415. zfs_vdev_scrub_min_active 1
  416. zfs_vdev_sync_read_max_active 10
  417. zfs_vdev_sync_read_min_active 10
  418. zfs_vdev_sync_write_max_active 10
  419. zfs_vdev_sync_write_min_active 10
  420. zfs_vdev_trim_max_active 2
  421. zfs_vdev_trim_min_active 1
  422. zfs_vdev_write_gap_limit 4096
  423. zfs_vnops_read_chunk_size 1048576
  424. zfs_wrlog_data_max 8589934592
  425. zfs_xattr_compat 0
  426. zfs_zevent_len_max 512
  427. zfs_zevent_retain_expire_secs 900
  428. zfs_zevent_retain_max 2000
  429. zfs_zil_clean_taskq_maxalloc 1048576
  430. zfs_zil_clean_taskq_minalloc 1024
  431. zfs_zil_clean_taskq_nthr_pct 100
  432. zfs_zil_saxattr 1
  433. zil_maxblocksize 131072
  434. zil_maxcopied 7680
  435. zil_nocacheflush 0
  436. zil_replay_disable 0
  437. zil_slog_bulk 67108864
  438. zio_deadman_log_all 0
  439. zio_dva_throttle_enabled 1
  440. zio_requeue_io_start_cut_in_line 1
  441. zio_slow_io_ms 30000
  442. zio_taskq_batch_pct 80
  443. zio_taskq_batch_tpq 0
  444. zio_taskq_read fixed,1,8 null scale null
  445. zio_taskq_write batch fixed,1,5 scale fixed,1,5
  446. zstd_abort_size 131072
  447. zstd_earlyabort_pass 1
  448. zvol_blk_mq_blocks_per_thread 8
  449. zvol_blk_mq_queue_depth 128
  450. zvol_enforce_quotas 1
  451. zvol_inhibit_dev 0
  452. zvol_major 230
  453. zvol_max_discard_blocks 16384
  454. zvol_num_taskqs 0
  455. zvol_open_timeout_ms 1000
  456. zvol_prefetch_bytes 131072
  457. zvol_request_sync 0
  458. zvol_threads 0
  459. zvol_use_blk_mq 0
  460. zvol_volmode 1
  461.  
  462. ZIL committed transactions: 44.5M
  463. Commit requests: 47.0k
  464. Flushes to stable storage: 46.8k
  465. Transactions to SLOG storage pool: 0 Bytes 0
  466. Transactions to non-SLOG storage pool: 19.0 GiB 199.6k
Advertisement
Add Comment
Please, Sign In to add comment
Public Pastes
We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy.  OK, I Understand
Not a member of Pastebin yet?
Sign Up, it unlocks many cool features!