- [root@kenobi ~]# ./arc_summary.pl
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- System Summary Tue Aug 24 16:24:04 2010
- FreeBSD 8.1-RELEASE #5: Tue Aug 24 01:43:19 UTC 2010 root
- Kernel Version: 801000 (osreldate)
- Hardware Platform: i386
- Processor Architecture: i386
- 4:24PM up 42 mins, 2 users, load averages: 1.42, 0.59, 0.23
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- Physical Memory: 3699.37M
- Page Size: 4096
- Kernel Memory
- TOTAL: 617.46M
- DATA: 97.90% 604.49M
- TEXT: 2.10% 12.97M
- ARC Summary
- Storage pool Version: 15 (spa)
- Filesystem Version: 4 (zpl)
- Memory Throttle Count: 0
- ARC Misc:
- Deleted: 24332
- Recycle Misses: 17
- Mutex Misses: 0
- Evict Skips: 0
- ARC Size:
- Current Size: 84.86% 543.11M (arcsize)
- Target Size: (Adaptive) 84.86% 543.10M (c)
- Min Size (Hard Limit): 12.50% 80.00M (c_min)
- Max Size (High Water): ~8:1 640.00M (c_max)
- ARC Size Breakdown:
- Recently Used Cache Size: 94.17% 511.44M (p)
- Frequently Used Cache Size: 5.83% 31.67M (arcsize-p)
- ARC Hash Breakdown:
- Elements Max: 6674
- Elements Current: 69.84% 4661
- Collisions: 1726
- Chain Max: 2
- Chains: 106
- ARC Efficiency:
- Cache Access Total: 5925
- Cache Hit Ratio: 98.48% 5835
- Cache Miss Ratio: 1.52% 90
- Actual Hit Ratio: 98.35% 5827
- Data Demand Efficiency: 99.98%
- Data Prefetch Efficiency: DISABLED (zfs_prefetch_disable)
- CACHE HITS BY CACHE LIST:
- Anonymous: --% Counter Rolled.
- Most Recently Used: 56.95% 3323 (mru)
- Most Frequently Used: 42.91% 2504 (mfu)
- Most Recently Used Ghost: 0.38% 22 (mru_ghost)
- Most Frequently Used Ghost: 0.00% 0 (mfu_ghost)
- CACHE HITS BY DATA TYPE:
- Demand Data: 79.95% 4665
- Prefetch Data: 0.00% 0
- Demand Metadata: 19.91% 1162
- Prefetch Metadata: 0.14% 8
- CACHE MISSES BY DATA TYPE:
- Demand Data: 1.11% 1
- Prefetch Data: 0.00% 0
- Demand Metadata: 94.44% 85
- Prefetch Metadata: 4.44% 4
- L2 ARC Stats: (enabled with access > 0) 0
- VDEV Cache Summary
- Access Total: 523
- Hits Ratio: 16.25% 85
- Miss Ratio: 83.75% 438
- Delegations: 24192
- ZFS Tunable (sysctl):
- kern.maxusers=384
- vfs.zfs.l2c_only_size=0
- vfs.zfs.mfu_ghost_data_lsize=0
- vfs.zfs.mfu_ghost_metadata_lsize=0
- vfs.zfs.mfu_ghost_size=0
- vfs.zfs.mfu_data_lsize=512
- vfs.zfs.mfu_metadata_lsize=4608
- vfs.zfs.mfu_size=5120
- vfs.zfs.mru_ghost_data_lsize=117571584
- vfs.zfs.mru_ghost_metadata_lsize=2579968
- vfs.zfs.mru_ghost_size=120151552
- vfs.zfs.mru_data_lsize=509214720
- vfs.zfs.mru_metadata_lsize=779264
- vfs.zfs.mru_size=510768128
- vfs.zfs.anon_data_lsize=0
- vfs.zfs.anon_metadata_lsize=0
- vfs.zfs.anon_size=56739840
- vfs.zfs.l2arc_norw=1
- vfs.zfs.l2arc_feed_again=1
- vfs.zfs.l2arc_noprefetch=0
- 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=167772160
- vfs.zfs.arc_meta_used=3402284
- vfs.zfs.mdcomp_disable=0
- vfs.zfs.arc_min=83886080
- vfs.zfs.arc_max=671088640
- 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.check_hostid=1
- vfs.zfs.recover=0
- vfs.zfs.txg.write_limit_override=0
- vfs.zfs.txg.synctime=5
- vfs.zfs.txg.timeout=30
- vfs.zfs.scrub_limit=10
- vfs.zfs.vdev.cache.bshift=16
- vfs.zfs.vdev.cache.size=10485760
- vfs.zfs.vdev.cache.max=16384
- 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=35
- vfs.zfs.cache_flush_disable=0
- vfs.zfs.zil_disable=0
- vfs.zfs.zio.use_uma=0
- vfs.zfs.version.zpl=4
- vfs.zfs.version.spa=15
- vfs.zfs.version.dmu_backup_stream=1
- vfs.zfs.version.dmu_backup_header=2
- vfs.zfs.version.acl=1
- vfs.zfs.debug=0
- vfs.zfs.super_owner=0
- vm.kmem_size=1073741824
- vm.kmem_size_scale=3
- vm.kmem_size_min=0
- vm.kmem_size_max=335544320
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