# zfs-stats -a ------------------------------------------------------------------------ ZFS Subsystem Report Fri Jan 11 22:38:47 2013 ------------------------------------------------------------------------ System Information: Kernel Version: 901000 (osreldate) Hardware Platform: i386 Processor Architecture: i386 ZFS Storage pool Version: 28 ZFS Filesystem Version: 5 FreeBSD 9.1-RELEASE #0 r243826: Tue Dec 4 06:55:39 UTC 2012 root 10:38PM up 9 mins, 1 user, load averages: 0.00, 0.10, 0.10 ------------------------------------------------------------------------ System Memory: 1.37% 27.39 MiB Active, 1.06% 21.18 MiB Inact 5.19% 103.51 MiB Wired, 0.00% 0 Cache 92.36% 1.80 GiB Free, 0.02% 372.00 KiB Gap Real Installed: 2.00 GiB Real Available: 99.19% 1.98 GiB Real Managed: 98.21% 1.95 GiB Logical Total: 2.00 GiB Logical Used: 9.00% 184.25 MiB Logical Free: 91.00% 1.82 GiB Kernel Memory: 82.84 MiB Data: 79.12% 65.54 MiB Text: 20.88% 17.29 MiB Kernel Memory Map: 411.76 MiB Size: 18.52% 76.25 MiB Free: 81.48% 335.50 MiB ------------------------------------------------------------------------ ARC Summary: (HEALTHY) Memory Throttle Count: 0 ARC Misc: Deleted: 6 Recycle Misses: 0 Mutex Misses: 0 Evict Skips: 0 ARC Size: 8.18% 21.07 MiB Target Size: (Adaptive) 100.00% 257.50 MiB Min Size (Hard Limit): 12.50% 32.19 MiB Max Size (High Water): 8:1 257.50 MiB ARC Size Breakdown: Recently Used Cache Size: 50.00% 128.75 MiB Frequently Used Cache Size: 50.00% 128.75 MiB ARC Hash Breakdown: Elements Max: 580 Elements Current: 100.00% 580 Collisions: 24 Chain Max: 1 Chains: 3 ------------------------------------------------------------------------ ARC Efficiency: 5.46k Cache Hit Ratio: 92.94% 5.07k Cache Miss Ratio: 7.06% 385 Actual Hit Ratio: 92.87% 5.07k Data Demand Efficiency: 85.86% 1.61k Data Prefetch Efficiency: 0.00% 3 CACHE HITS BY CACHE LIST: Anonymously Used: 0.08% 4 Most Recently Used: 42.79% 2.17k Most Frequently Used: 57.13% 2.90k Most Recently Used Ghost: 0.00% 0 Most Frequently Used Ghost: 0.00% 0 CACHE HITS BY DATA TYPE: Demand Data: 27.29% 1.38k Prefetch Data: 0.00% 0 Demand Metadata: 72.63% 3.68k Prefetch Metadata: 0.08% 4 CACHE MISSES BY DATA TYPE: Demand Data: 59.22% 228 Prefetch Data: 0.78% 3 Demand Metadata: 31.95% 123 Prefetch Metadata: 8.05% 31 ------------------------------------------------------------------------ L2ARC is disabled ------------------------------------------------------------------------ ------------------------------------------------------------------------ VDEV cache is disabled ------------------------------------------------------------------------ ZFS Tunables (sysctl): kern.maxusers 384 vm.kmem_size 432013312 vm.kmem_size_scale 3 vm.kmem_size_min 0 vm.kmem_size_max 432013312 vfs.zfs.l2c_only_size 0 vfs.zfs.mfu_ghost_data_lsize 1100288 vfs.zfs.mfu_ghost_metadata_lsize 151552 vfs.zfs.mfu_ghost_size 1251840 vfs.zfs.mfu_data_lsize 2483200 vfs.zfs.mfu_metadata_lsize 113664 vfs.zfs.mfu_size 2596864 vfs.zfs.mru_ghost_data_lsize 131072 vfs.zfs.mru_ghost_metadata_lsize 372736 vfs.zfs.mru_ghost_size 503808 vfs.zfs.mru_data_lsize 16656896 vfs.zfs.mru_metadata_lsize 773632 vfs.zfs.mru_size 18518016 vfs.zfs.anon_data_lsize 0 vfs.zfs.anon_metadata_lsize 0 vfs.zfs.anon_size 16384 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 67502080 vfs.zfs.arc_meta_used 2956892 vfs.zfs.arc_min 33751040 vfs.zfs.arc_max 270008320 vfs.zfs.dedup.prefetch 1 vfs.zfs.mdcomp_disable 0 vfs.zfs.write_limit_override 0 vfs.zfs.write_limit_inflated 6390251520 vfs.zfs.write_limit_max 266260480 vfs.zfs.write_limit_min 33554432 vfs.zfs.write_limit_shift 3 vfs.zfs.no_write_throttle 0 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 1 vfs.zfs.mg_alloc_failures 8 vfs.zfs.check_hostid 1 vfs.zfs.recover 0 vfs.zfs.txg.synctime_ms 1000 vfs.zfs.txg.timeout 5 vfs.zfs.vdev.cache.bshift 16 vfs.zfs.vdev.cache.size 0 vfs.zfs.vdev.cache.max 16384 vfs.zfs.vdev.write_gap_limit 4096 vfs.zfs.vdev.read_gap_limit 32768 vfs.zfs.vdev.aggregation_limit 131072 vfs.zfs.vdev.ramp_rate 2 vfs.zfs.vdev.time_shift 6 vfs.zfs.vdev.min_pending 4 vfs.zfs.vdev.max_pending 10 vfs.zfs.vdev.bio_flush_disable 0 vfs.zfs.cache_flush_disable 0 vfs.zfs.zil_replay_disable 0 vfs.zfs.zio.use_uma 0 vfs.zfs.snapshot_list_prefetch 0 vfs.zfs.version.zpl 5 vfs.zfs.version.spa 28 vfs.zfs.version.acl 1 vfs.zfs.debug 0 vfs.zfs.super_owner 0 ------------------------------------------------------------------------