From owner-freebsd-fs@FreeBSD.ORG Wed Oct 16 05:49:49 2013 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id ECBA8D52 for ; Wed, 16 Oct 2013 05:49:48 +0000 (UTC) (envelope-from jedrzejczak.michal@gmail.com) Received: from mail-ea0-x22e.google.com (mail-ea0-x22e.google.com [IPv6:2a00:1450:4013:c01::22e]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 774082230 for ; Wed, 16 Oct 2013 05:49:48 +0000 (UTC) Received: by mail-ea0-f174.google.com with SMTP id z15so103556ead.33 for ; Tue, 15 Oct 2013 22:49:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=XJLtg3ErgZ/co3Q8YjgYxww+jjFBPlsVnhbQkKUJ/8g=; b=iUdeXXRjxOBtc+UeWWgNsALLfTmOBWK0kLuaI34eNyoUhKA68aamBb5o8LERAe7tHh VWxI72RwjSZBAPhxNILN287bNorgGg1wWyHAaxgnRJQGpblOV1GJgpXWZAwxVnjqre3h 9q4rnUB2VOyZQeGoE1rcLZ8difzBwhiNq3Bu//++6chkWsq6SAJQ3+KDcBrumKZBHVYS LUMGi3jliWmbTvfjNL0oO2UHcyPs5fghbaj3mav7U+e3U0htnqYcNVPquloBhVV/XhUn 8nvsPJs0npg7TUYnjk2IJjF/t9zrANF1KRIVluOqeSLz5GFBdCc9G7Hjcc5vWB5WX5PU UveA== MIME-Version: 1.0 X-Received: by 10.14.251.76 with SMTP id a52mr173825ees.76.1381902586801; Tue, 15 Oct 2013 22:49:46 -0700 (PDT) Received: by 10.223.2.5 with HTTP; Tue, 15 Oct 2013 22:49:46 -0700 (PDT) Date: Wed, 16 Oct 2013 07:49:46 +0200 Message-ID: Subject: ARC Summary: (THROTTLED) From: =?ISO-8859-2?Q?Micha=B3_J=EAdrzejczak?= To: freebsd-fs@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.14 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Oct 2013 05:49:49 -0000 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