Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 96316 invoked from network); 27 Oct 2010 06:29:44 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 27 Oct 2010 06:29:44 -0000 Received: (qmail 69906 invoked by uid 500); 27 Oct 2010 06:29:42 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 69778 invoked by uid 500); 27 Oct 2010 06:29:41 -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 69770 invoked by uid 99); 27 Oct 2010 06:29:40 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 27 Oct 2010 06:29:40 +0000 X-ASF-Spam-Status: No, hits=0.0 required=10.0 tests=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 juho.makinen@gmail.com designates 209.85.214.172 as permitted sender) Received: from [209.85.214.172] (HELO mail-iw0-f172.google.com) (209.85.214.172) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 27 Oct 2010 06:29:34 +0000 Received: by iwn40 with SMTP id 40so442732iwn.31 for ; Tue, 26 Oct 2010 23:29:13 -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; bh=/6X1cOIJ4pLkXJL9rkao9FSPkSs9vAVikjjt4av3Z7M=; b=kBtKZEl95HysjfKDzUq15PeEFGU1kjVDsbqbBTi3X4ZxRoqwVKieD29MuCRhSHJMVL EFwMXVW7+hDmcBKtzxhS3oi5fPKgsKbUXL6yxSbieXdWDwjtN8Y2FE1AYPK9dHhcdajY DD8X8rKnhJNBsgm2pzU8l6GG0KUne6U69G/K4= 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; b=tIch6Z1dugBhIuBE179oiqheSMyi7PqdxEGlwdSH7hWJVR4qSJH1dMIixfZcK6g3DS Kr8ET3rqe20K3xPTBLpg2uZlePtew9YVX8Mbkkfw6e02wjMXKhlqaanC+l/KKzg4ExH3 qNyK88cQ5VDTDYc4wV6AOzAclK/eHmmo3ehRc= MIME-Version: 1.0 Received: by 10.231.183.77 with SMTP id cf13mr214444ibb.113.1288160953898; Tue, 26 Oct 2010 23:29:13 -0700 (PDT) Received: by 10.231.19.71 with HTTP; Tue, 26 Oct 2010 23:29:13 -0700 (PDT) In-Reply-To: References: Date: Wed, 27 Oct 2010 09:29:13 +0300 Message-ID: Subject: Re: 10G Ethernet / Infiniband From: =?ISO-8859-1?Q?Juho_M=E4kinen?= To: user@cassandra.apache.org Content-Type: text/plain; charset=ISO-8859-1 The disks in cassandra node will most probably be your bottleneck. I'd suggest (haven't tried, this is just based on my intuition) to invest in SSD disks first and only after that think about going 10Gbps. - Garo On Tue, Oct 26, 2010 at 10:11 PM, Wayne wrote: > Is anyone out there using 10G Ethernet or Infiniband with Cassandra in a > cluster where there is a noticeable increase in performance or reduced > latency to warrant the cost of the faster network connections? > > Any experience or even rationale would help. We are considering Infiniband > but are on the fence as to how much it would really improve performance and > reduce latency (along with how stable CentOS 5.5 drivers would be). > > Thanks in advance for any information/feedback. > > >