Date: Wed, 16 Oct 2013 07:49:46 +0200 From: =?ISO-8859-2?Q?Micha=B3_J=EAdrzejczak?= <jedrzejczak.michal@gmail.com> To: freebsd-fs@freebsd.org Subject: ARC Summary: (THROTTLED) Message-ID: <CANrxokET1avcetzceg3VNZqLvqezb7OeJVxveW5Hw3kFXeZebg@mail.gmail.com>
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Hello list. I've problem with ARC. ZFSonRoot FreeBSD 9.2 (amd64). zpool list NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT zroot 7.25T 6.24T 1.01T 86% 1.00x ONLINE - System Memory: 20.38% 3.10 GiB Active, 13.24% 2.01 GiB Inact 62.48% 9.50 GiB Wired, 3.26% 507.51 MiB Cache 0.63% 97.76 MiB Free, 0.01% 1.92 MiB Gap Real Installed: 16.00 GiB Real Available: 98.17% 15.71 GiB Real Managed: 96.82% 15.21 GiB Logical Total: 16.00 GiB Logical Used: 83.73% 13.40 GiB Logical Free: 16.27% 2.60 GiB Kernel Memory: 5.78 GiB Data: 99.59% 5.76 GiB Text: 0.41% 24.11 MiB Kernel Memory Map: 8.56 GiB Size: 65.15% 5.57 GiB Free: 34.85% 2.98 GiB Page: 1 ------------------------------------------------------------------------ *ARC Summary: (THROTTLED)* Storage pool Version: 5000 Filesystem Version: 5 Memory Throttle Count: 4.86k ARC Misc: Deleted: 719.32m Recycle Misses: 18.46m Mutex Misses: 4.56m Evict Skips: 4.56m ARC Size: 41.41% 5.88 GiB Target Size: (Adaptive) 41.41% 5.88 GiB Min Size (Hard Limit): 12.50% 1.78 GiB Max Size (High Water): 8:1 14.21 GiB ARC Size Breakdown: Recently Used Cache Size: 92.95% 5.47 GiB Frequently Used Cache Size: 7.05% 424.58 MiB ARC Hash Breakdown: Elements Max: 1.16m Elements Current: 32.80% 381.24k Collisions: 643.24m Chain Max: 30 Chains: 103.78k Page: 2 ------------------------------------------------------------------------ ARC Efficiency: 839.63m Cache Hit Ratio: 93.39% 784.14m Cache Miss Ratio: 6.61% 55.50m Actual Hit Ratio: 85.30% 716.21m Data Demand Efficiency: 99.13% 487.70m Data Prefetch Efficiency: 27.32% 57.62m CACHE HITS BY CACHE LIST: Anonymously Used: 8.12% 63.70m Most Recently Used: 21.00% 164.64m Most Frequently Used: 70.34% 551.58m Most Recently Used Ghost: 0.15% 1.17m Most Frequently Used Ghost: 0.39% 3.05m CACHE HITS BY DATA TYPE: Demand Data: 61.65% 483.44m Prefetch Data: 2.01% 15.74m Demand Metadata: 29.69% 232.78m Prefetch Metadata: 6.65% 52.18m CACHE MISSES BY DATA TYPE: Demand Data: 7.68% 4.26m Prefetch Data: 75.47% 41.88m Demand Metadata: 12.49% 6.93m Prefetch Metadata: 4.36% 2.42m Do you have any suggestion? What is wrong? Regards
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