Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 17480 invoked from network); 9 Jun 2010 09:59:42 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 9 Jun 2010 09:59:42 -0000 Received: (qmail 97359 invoked by uid 500); 9 Jun 2010 09:59:40 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 97164 invoked by uid 500); 9 Jun 2010 09:59:40 -0000 Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@cassandra.apache.org Delivered-To: mailing list user@cassandra.apache.org Received: (qmail 97156 invoked by uid 99); 9 Jun 2010 09:59:40 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 09 Jun 2010 09:59:40 +0000 X-ASF-Spam-Status: No, hits=-0.6 required=10.0 tests=AWL,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of shulmanb@gmail.com designates 74.125.82.172 as permitted sender) Received: from [74.125.82.172] (HELO mail-wy0-f172.google.com) (74.125.82.172) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 09 Jun 2010 09:59:35 +0000 Received: by wyb32 with SMTP id 32so1483070wyb.31 for ; Wed, 09 Jun 2010 02:59:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type :content-transfer-encoding; bh=jce3rwI6MMmiHgTIX6gSDYjkB4eJPegiN1tq0mB4l7g=; b=ZYK8kc1+Lb1A2vrU7I4Md9nBmvu7EeHgq4hhHB8+6IKoyc0CgvL0Y0WVPJIJ0Yl+gF piI45xdduk5KM3Ko6kSJztD3oUuxAIS9VNMhzOd8T9M/AvxVe4PNx8tFkbMQjRol+vCL IE8LGyQgdjrA81wD7djmdOQm1lS9PNiUHyKQM= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; b=r7ytKETlkK/tfIbdgeYn42gcA6+Qt617hM1zl0ggWXj2OxI9XjY2mDifi0QtXh4cxd mxVZvgiKAM3QLEZOlFw5tyN53p0V8q5Xdfh+Gey75fXEuDScfZr0S39idqs8tWHRWeBg 2y6v+w7voEoQ8lqnoLrNe4dDhX5Oef8/NJ63Y= MIME-Version: 1.0 Received: by 10.216.90.3 with SMTP id d3mr4462970wef.110.1276077543262; Wed, 09 Jun 2010 02:59:03 -0700 (PDT) Received: by 10.216.2.71 with HTTP; Wed, 9 Jun 2010 02:59:00 -0700 (PDT) In-Reply-To: <4C0D124D.8030006@strands.com> References: <4C0D124D.8030006@strands.com> Date: Wed, 9 Jun 2010 12:59:00 +0300 Message-ID: Subject: Re: Cassandra on flash storage From: Boris Shulman To: user@cassandra.apache.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Using SSD for a commitlog device can bost performance while using cassandra in a batch mode for fsync operations. From my experience ta write operation can be 10 times faster when usding SSD for commitlog. On Mon, Jun 7, 2010 at 6:37 PM, H=E9ctor Izquierdo = wrote: > Hi everyone. > > I wanted to know if anybody has had any experience with cassandra on flas= h > storage. At work we have a cluster of 6 machines running Tokyotyrant on > flash-io drives (320GB) each, but performance is not what we expected, an= d > we'are having some issues with replication and availability. It's also ha= rd > to manage, and adding/removing nodes is pure hell. > > We can't afford test hardware with flash storage right now, so could > somebody share his experience? > > Thank you very much > > H=E9ctor Izquierdo >