From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id 9BDE21381F4 for ; Mon, 13 Aug 2012 20:44:45 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 5515BE07C5; Mon, 13 Aug 2012 20:44:21 +0000 (UTC) Received: from mail-bk0-f53.google.com (mail-bk0-f53.google.com [209.85.214.53]) by pigeon.gentoo.org (Postfix) with ESMTP id 9AEF2E07AD for ; Mon, 13 Aug 2012 20:42:07 +0000 (UTC) Received: by bkwj4 with SMTP id j4so1861426bkw.40 for ; Mon, 13 Aug 2012 13:42:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=from:to:cc:subject:date:message-id:user-agent:in-reply-to :references:mime-version:content-transfer-encoding:content-type; bh=quHjepMczxvBZuZrUdKmAcrNhXRd5hMz8MSJqKXVKVM=; b=GHLERu7Ga7BOLlOykyLEpeAxAw53l89EZm/qsnmVHRLcXzfawxSUyASLbrK7jC7SRg cThesu5Nky2zR99Qo7ldtKpKSYYU2Q1g2lV48hvmSk1bflulnpCuWQiKYDznKmGWx17V +NXl/WmtK1byfK9wM56pVv1wyiiq7v7Jk51o9kp+1gR8rNVur4NXt1i/4c/OX8fT/5Le CjZY7oWRbyyD2PlIo11hDRTzH+NTxen0m1OQCybz229xZnefNb6NmVdQW4VWiPRhv017 WxbP1s9dSVvT7WNlM4/sLDMtSYDR7FQNcJC/wffUYgg5MfcUZ081yNqAACbVlU5NJk8O b8Vg== Received: by 10.204.129.215 with SMTP id p23mr71016bks.3.1344890526691; Mon, 13 Aug 2012 13:42:06 -0700 (PDT) Received: from energy.localnet (p4FC60894.dip0.t-ipconnect.de. [79.198.8.148]) by mx.google.com with ESMTPS id gq2sm273993bkc.13.2012.08.13.13.42.03 (version=TLSv1/SSLv3 cipher=OTHER); Mon, 13 Aug 2012 13:42:05 -0700 (PDT) From: Volker Armin Hemmann To: gentoo-user@lists.gentoo.org Cc: Paul Hartman Subject: Re: [gentoo-user] Fast file system for cache directory with lot's of files Date: Mon, 13 Aug 2012 22:41:55 +0200 Message-ID: <5008237.Ys2AGcLoWV@energy> User-Agent: KMail/4.9 (Linux/3.2.27; KDE/4.9.0; x86_64; ; ) In-Reply-To: References: Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Archives-Salt: 51420737-0722-4c0b-a8d9-52704b16d5f3 X-Archives-Hash: 37f20bbc85e6783b1a599a8ce68750b2 Am Montag, 13. August 2012, 15:13:03 schrieb Paul Hartman: > On Mon, Aug 13, 2012 at 8:16 AM, Michael Hampicke wrote: > > Howdy gentooers, > > > > I am looking for a filesystem that perfomes well for a cache directory. > > Here's some data on that dir: > > - cache for prescaled images files + metadata files > > - nested directory structure ( 20/2022/202231/*files* ) > > - about 20GB > > - 100.000 directories > > - about 2 million files > > > > The system has 2x Intel Xon Quad-cores (Nehalem), 16GB of RAM and two > > 10.000rpm hard drives running a RAID1. > > > > Up until now I was using ext4 with noatime, but I am not happy with it's > > performence. Finding and deleting old files with 'find' is incredible > > slow, > > so I am looking for a filesystem that performs better. First candiate that > > came to mind was reiserfs, but last time I tried it, it became slower over > > time (fragmentation?). > > Currently I am running a test with btrfs and so far I am quiet happy with > > it as it is much faster in my use case. > > > > Do you guys have any other suggestions? How about JFS? I used that on my > > old NAS box because of it's low cpu usage. Should I give reiser4 a try, > > or better leave it be given Hans Reiser's current status? > > I think btrfs probably is meant to provide a lot of the modern > features like reiser4 or xfs (tail-packing, indexing, compression, > snapshots, subvolumes, etc). Don't know if it is considered stable > enough for your usage but at least it is under active development and > funded by large names. I think if you would consider reiser4 as a > possibility then you should consider btrfs as well. reiser4 has one feature btrfs and ever other is missing. atomic operations. Which is a wonderful feature. Too bad 'politics' killed reiser4. -- #163933