Created
September 18, 2014 15:26
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zfs-stats (http://www.freshports.org/sysutils/zfs-stats) of zuul, my main production server
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| [dan@zuul:~] $ zfs-stats -a | |
| ------------------------------------------------------------------------ | |
| ZFS Subsystem Report Thu Sep 18 15:25:15 2014 | |
| ------------------------------------------------------------------------ | |
| System Information: | |
| Kernel Version: 903000 (osreldate) | |
| Hardware Platform: amd64 | |
| Processor Architecture: amd64 | |
| ZFS Storage pool Version: 5000 | |
| ZFS Filesystem Version: 5 | |
| FreeBSD 9.3-RELEASE-p2 #0: Mon Sep 15 16:44:27 UTC 2014 root | |
| 3:25PM up 22:02, 1 user, load averages: 0.13, 0.08, 0.06 | |
| ------------------------------------------------------------------------ | |
| System Memory: | |
| 2.13% 167.24 MiB Active, 5.37% 422.16 MiB Inact | |
| 82.34% 6.33 GiB Wired, 0.48% 37.99 MiB Cache | |
| 9.65% 759.06 MiB Free, 0.04% 3.31 MiB Gap | |
| Real Installed: 8.00 GiB | |
| Real Available: 99.25% 7.94 GiB | |
| Real Managed: 96.76% 7.68 GiB | |
| Logical Total: 8.00 GiB | |
| Logical Used: 85.12% 6.81 GiB | |
| Logical Free: 14.88% 1.19 GiB | |
| Kernel Memory: 4.63 GiB | |
| Data: 99.48% 4.61 GiB | |
| Text: 0.52% 24.84 MiB | |
| Kernel Memory Map: 5.80 GiB | |
| Size: 73.50% 4.26 GiB | |
| Free: 26.50% 1.54 GiB | |
| ------------------------------------------------------------------------ | |
| ARC Summary: (HEALTHY) | |
| Memory Throttle Count: 0 | |
| ARC Misc: | |
| Deleted: 745.44k | |
| Recycle Misses: 128.34k | |
| Mutex Misses: 726 | |
| Evict Skips: 1.02m | |
| ARC Size: 72.71% 4.86 GiB | |
| Target Size: (Adaptive) 89.01% 5.95 GiB | |
| Min Size (Hard Limit): 12.50% 855.42 MiB | |
| Max Size (High Water): 8:1 6.68 GiB | |
| ARC Size Breakdown: | |
| Recently Used Cache Size: 67.78% 4.03 GiB | |
| Frequently Used Cache Size: 32.22% 1.92 GiB | |
| ARC Hash Breakdown: | |
| Elements Max: 593.16k | |
| Elements Current: 53.72% 318.62k | |
| Collisions: 1.95m | |
| Chain Max: 17 | |
| Chains: 82.69k | |
| ------------------------------------------------------------------------ | |
| ARC Efficiency: 56.26m | |
| Cache Hit Ratio: 97.91% 55.08m | |
| Cache Miss Ratio: 2.09% 1.18m | |
| Actual Hit Ratio: 93.33% 52.51m | |
| Data Demand Efficiency: 82.24% 4.96m | |
| Data Prefetch Efficiency: 9.04% 132.41k | |
| CACHE HITS BY CACHE LIST: | |
| Anonymously Used: 4.19% 2.31m | |
| Most Recently Used: 3.72% 2.05m | |
| Most Frequently Used: 91.61% 50.46m | |
| Most Recently Used Ghost: 0.07% 35.96k | |
| Most Frequently Used Ghost: 0.42% 231.39k | |
| CACHE HITS BY DATA TYPE: | |
| Demand Data: 7.41% 4.08m | |
| Prefetch Data: 0.02% 11.97k | |
| Demand Metadata: 86.68% 47.75m | |
| Prefetch Metadata: 5.88% 3.24m | |
| CACHE MISSES BY DATA TYPE: | |
| Demand Data: 74.85% 881.47k | |
| Prefetch Data: 10.23% 120.44k | |
| Demand Metadata: 9.62% 113.23k | |
| Prefetch Metadata: 5.30% 62.44k | |
| ------------------------------------------------------------------------ | |
| L2ARC is disabled | |
| ------------------------------------------------------------------------ | |
| File-Level Prefetch: (HEALTHY) | |
| DMU Efficiency: 103.63m | |
| Hit Ratio: 77.10% 79.90m | |
| Miss Ratio: 22.90% 23.73m | |
| Colinear: 23.73m | |
| Hit Ratio: 0.04% 8.89k | |
| Miss Ratio: 99.96% 23.73m | |
| Stride: 76.59m | |
| Hit Ratio: 99.97% 76.57m | |
| Miss Ratio: 0.03% 24.42k | |
| DMU Misc: | |
| Reclaim: 23.73m | |
| Successes: 0.80% 189.57k | |
| Failures: 99.20% 23.54m | |
| Streams: 3.33m | |
| +Resets: 0.00% 70 | |
| -Resets: 100.00% 3.33m | |
| Bogus: 0 | |
| ------------------------------------------------------------------------ | |
| VDEV cache is disabled | |
| ------------------------------------------------------------------------ | |
| ZFS Tunables (sysctl): | |
| kern.maxusers 844 | |
| vm.kmem_size 8249540608 | |
| vm.kmem_size_scale 1 | |
| vm.kmem_size_min 0 | |
| vm.kmem_size_max 329853485875 | |
| vfs.zfs.l2c_only_size 0 | |
| vfs.zfs.mfu_ghost_data_lsize 3091647488 | |
| vfs.zfs.mfu_ghost_metadata_lsize 273710080 | |
| vfs.zfs.mfu_ghost_size 3365357568 | |
| vfs.zfs.mfu_data_lsize 322868224 | |
| vfs.zfs.mfu_metadata_lsize 282812928 | |
| vfs.zfs.mfu_size 685485568 | |
| vfs.zfs.mru_ghost_data_lsize 2298686464 | |
| vfs.zfs.mru_ghost_metadata_lsize 228959232 | |
| vfs.zfs.mru_ghost_size 2527645696 | |
| vfs.zfs.mru_data_lsize 3754452992 | |
| vfs.zfs.mru_metadata_lsize 76045312 | |
| vfs.zfs.mru_size 3857529856 | |
| vfs.zfs.anon_data_lsize 0 | |
| vfs.zfs.anon_metadata_lsize 0 | |
| vfs.zfs.anon_size 2978816 | |
| vfs.zfs.l2arc_norw 1 | |
| vfs.zfs.l2arc_feed_again 1 | |
| vfs.zfs.l2arc_noprefetch 1 | |
| vfs.zfs.l2arc_feed_min_ms 200 | |
| vfs.zfs.l2arc_feed_secs 1 | |
| vfs.zfs.l2arc_headroom 2 | |
| vfs.zfs.l2arc_write_boost 8388608 | |
| vfs.zfs.l2arc_write_max 8388608 | |
| vfs.zfs.arc_meta_limit 1793949696 | |
| vfs.zfs.arc_meta_used 1138233232 | |
| vfs.zfs.arc_min 896974848 | |
| vfs.zfs.arc_max 7175798784 | |
| vfs.zfs.dedup.prefetch 1 | |
| vfs.zfs.mdcomp_disable 0 | |
| vfs.zfs.nopwrite_enabled 1 | |
| vfs.zfs.zfetch.array_rd_sz 1048576 | |
| vfs.zfs.zfetch.block_cap 256 | |
| vfs.zfs.zfetch.min_sec_reap 2 | |
| vfs.zfs.zfetch.max_streams 8 | |
| vfs.zfs.prefetch_disable 0 | |
| vfs.zfs.no_scrub_prefetch 0 | |
| vfs.zfs.no_scrub_io 0 | |
| vfs.zfs.resilver_min_time_ms 3000 | |
| vfs.zfs.free_min_time_ms 1000 | |
| vfs.zfs.scan_min_time_ms 1000 | |
| vfs.zfs.scan_idle 50 | |
| vfs.zfs.scrub_delay 4 | |
| vfs.zfs.resilver_delay 2 | |
| vfs.zfs.top_maxinflight 32 | |
| vfs.zfs.write_to_degraded 0 | |
| vfs.zfs.mg_noalloc_threshold 0 | |
| vfs.zfs.condense_pct 200 | |
| vfs.zfs.metaslab.weight_factor_enable 0 | |
| vfs.zfs.metaslab.preload_enabled 1 | |
| vfs.zfs.metaslab.preload_limit 3 | |
| vfs.zfs.metaslab.unload_delay 8 | |
| vfs.zfs.metaslab.load_pct 50 | |
| vfs.zfs.metaslab.min_alloc_size 10485760 | |
| vfs.zfs.metaslab.df_free_pct 4 | |
| vfs.zfs.metaslab.df_alloc_threshold 131072 | |
| vfs.zfs.metaslab.debug_unload 0 | |
| vfs.zfs.metaslab.debug_load 0 | |
| vfs.zfs.metaslab.gang_bang 131073 | |
| vfs.zfs.check_hostid 1 | |
| vfs.zfs.spa_asize_inflation 24 | |
| vfs.zfs.deadman_enabled 1 | |
| vfs.zfs.deadman_checktime_ms 5000 | |
| vfs.zfs.deadman_synctime_ms 1000000 | |
| vfs.zfs.recover 0 | |
| vfs.zfs.txg.timeout 5 | |
| vfs.zfs.min_auto_ashift 9 | |
| vfs.zfs.max_auto_ashift 13 | |
| vfs.zfs.vdev.cache.bshift 16 | |
| vfs.zfs.vdev.cache.size 0 | |
| vfs.zfs.vdev.cache.max 16384 | |
| vfs.zfs.vdev.trim_on_init 1 | |
| vfs.zfs.vdev.write_gap_limit 4096 | |
| vfs.zfs.vdev.read_gap_limit 32768 | |
| vfs.zfs.vdev.aggregation_limit 131072 | |
| vfs.zfs.vdev.scrub_max_active 2 | |
| vfs.zfs.vdev.scrub_min_active 1 | |
| vfs.zfs.vdev.async_write_max_active 10 | |
| vfs.zfs.vdev.async_write_min_active 1 | |
| vfs.zfs.vdev.async_read_max_active 3 | |
| vfs.zfs.vdev.async_read_min_active 1 | |
| vfs.zfs.vdev.sync_write_max_active 10 | |
| vfs.zfs.vdev.sync_write_min_active 10 | |
| vfs.zfs.vdev.sync_read_max_active 10 | |
| vfs.zfs.vdev.sync_read_min_active 10 | |
| vfs.zfs.vdev.max_active 1000 | |
| vfs.zfs.vdev.bio_delete_disable 0 | |
| vfs.zfs.vdev.bio_flush_disable 0 | |
| vfs.zfs.vdev.trim_max_pending 64 | |
| vfs.zfs.vdev.trim_max_bytes 2147483648 | |
| vfs.zfs.cache_flush_disable 0 | |
| vfs.zfs.zil_replay_disable 0 | |
| vfs.zfs.sync_pass_rewrite 2 | |
| vfs.zfs.sync_pass_dont_compress 5 | |
| vfs.zfs.sync_pass_deferred_free 2 | |
| vfs.zfs.zio.use_uma 0 | |
| vfs.zfs.snapshot_list_prefetch 0 | |
| vfs.zfs.version.ioctl 3 | |
| vfs.zfs.version.zpl 5 | |
| vfs.zfs.version.spa 5000 | |
| vfs.zfs.version.acl 1 | |
| vfs.zfs.debug 0 | |
| vfs.zfs.super_owner 0 | |
| vfs.zfs.trim.enabled 1 | |
| vfs.zfs.trim.max_interval 1 | |
| vfs.zfs.trim.timeout 30 | |
| vfs.zfs.trim.txg_delay 32 | |
| ------------------------------------------------------------------------ | |
| [dan@zuul:~] $ |
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