Return-Path: Delivered-To: apmail-lucene-java-user-archive@www.apache.org Received: (qmail 98270 invoked from network); 14 Dec 2007 18:19:16 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 14 Dec 2007 18:19:16 -0000 Received: (qmail 48145 invoked by uid 500); 14 Dec 2007 18:18:58 -0000 Delivered-To: apmail-lucene-java-user-archive@lucene.apache.org Received: (qmail 48122 invoked by uid 500); 14 Dec 2007 18:18:58 -0000 Mailing-List: contact java-user-help@lucene.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: java-user@lucene.apache.org Delivered-To: mailing list java-user@lucene.apache.org Received: (qmail 48111 invoked by uid 99); 14 Dec 2007 18:18:58 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 14 Dec 2007 10:18:58 -0800 X-ASF-Spam-Status: No, hits=2.0 required=10.0 tests=HTML_MESSAGE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of erickerickson@gmail.com designates 64.233.182.184 as permitted sender) Received: from [64.233.182.184] (HELO nf-out-0910.google.com) (64.233.182.184) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 14 Dec 2007 18:18:35 +0000 Received: by nf-out-0910.google.com with SMTP id d3so1043792nfc.15 for ; Fri, 14 Dec 2007 10:18:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; bh=8+l2/8ukCJ5A4xTcH4uY6NHdbN7w+5Sb1B7wmdES1HQ=; b=QkhnxKCRx/5/rmv9tcl+unSepYGtGnGSbD1zrdeL5u5cOtekhvEvufKNTCuMHQMnoxw8H4c4BN1J8bdCCaN7AQ+cvw5NK2M5KmOT8lHZeziZ2Kj6FgYl/fQhwUSUgHlVxmBDdUgGXNijpB0Ln+NWLd6TITy7TAGWwrEh9BFY500= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=rkXHUnteX5GVElUVoS3X+ixEG9UEEh2lhVcu0WSabzjSGenw2ztUy5Y8UIX5K2/ish/psp/Kv+yKnT74KBTIS3d2ke0vDyvNk78RrpSZG//iEFSedyAj4YyI5q590fe7HUYk5gh0ynh4CpL87eZAQHDkwWkEI30k/8HnW3xD540= Received: by 10.82.149.8 with SMTP id w8mr9625587bud.24.1197656315471; Fri, 14 Dec 2007 10:18:35 -0800 (PST) Received: by 10.82.191.6 with HTTP; Fri, 14 Dec 2007 10:18:35 -0800 (PST) Message-ID: <359a92830712141018y42af0c58ofbaca5cfffda05b9@mail.gmail.com> Date: Fri, 14 Dec 2007 13:18:35 -0500 From: "Erick Erickson" To: java-user@lucene.apache.org, te@statsbiblioteket.dk Subject: Re: Heads-up on SSD In-Reply-To: <1197629949.3515.29.camel@PC990.sb.statsbiblioteket.dk> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_1836_31028050.1197656315467" References: <1197629949.3515.29.camel@PC990.sb.statsbiblioteket.dk> X-Virus-Checked: Checked by ClamAV on apache.org ------=_Part_1836_31028050.1197656315467 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline This is great stuff, thanks for posting it. Erick On Dec 14, 2007 5:59 AM, Toke Eskildsen wrote: > There's an interesting article on state-of-the-art setup with Mtron > Solid State Drives at > http://www.nextlevelhardware.com/storage/battleship/ > The concise version is that Mtron flash drives puts all traditional > harddrives to shame and seems especially well suited for applications > that performs a lot of seeks. No surprise there, but read the article > for some eye-opening numbers. > > At The State and University Library in Denmark we've experimented with > two Samsung SSDs vs. two 15.000 RPM traditional harddisks in RAID setup > with our current Lucene index at about 30GB and logged queries from our > users. > > For searches we can confirm that the SSDs are substantially faster, > especially when the available amount of RAM for caching relative to the > index size is small. A teaser-graph can be viewed at > http://wiki.statsbiblioteket.dk/summa/Hardware > > Our test should not be seen as authoritative or even even representative > for Lucene on SSDs in general, but it seems clear to us that users of > Lucene-systems ought to look into SSDs if they haven't already done so. > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org > For additional commands, e-mail: java-user-help@lucene.apache.org > > ------=_Part_1836_31028050.1197656315467--