Return-Path: X-Original-To: apmail-cassandra-user-archive@www.apache.org Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id CAD0BDB7E for ; Tue, 5 Mar 2013 02:13:00 +0000 (UTC) Received: (qmail 33571 invoked by uid 500); 5 Mar 2013 02:12:57 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 33555 invoked by uid 500); 5 Mar 2013 02:12:57 -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 33547 invoked by uid 99); 5 Mar 2013 02:12:57 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 05 Mar 2013 02:12:57 +0000 X-ASF-Spam-Status: No, hits=0.5 required=5.0 tests=FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_REPLYTO_END_DIGIT,RCVD_IN_DNSWL_NONE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: local policy) Received: from [98.139.212.164] (HELO nm5.bullet.mail.bf1.yahoo.com) (98.139.212.164) by apache.org (qpsmtpd/0.29) with SMTP; Tue, 05 Mar 2013 02:12:51 +0000 Received: from [98.139.212.144] by nm5.bullet.mail.bf1.yahoo.com with NNFMP; 05 Mar 2013 02:12:29 -0000 Received: from [98.139.212.242] by tm1.bullet.mail.bf1.yahoo.com with NNFMP; 05 Mar 2013 02:12:29 -0000 Received: from [127.0.0.1] by omp1051.mail.bf1.yahoo.com with NNFMP; 05 Mar 2013 02:12:29 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 689375.65223.bm@omp1051.mail.bf1.yahoo.com Received: (qmail 89521 invoked by uid 60001); 5 Mar 2013 02:12:29 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1362449549; bh=q5WF70p+tyr77L7ikNnDyE7PyTW5LLw+OJcBJLO+rdI=; h=X-YMail-OSG:Received:X-Mailer:Message-ID:Date:From:Reply-To:Subject:To:MIME-Version:Content-Type; b=bifoQ/4bukzzkf9mloALymV/nwrlX+x1KCy/Vmwjc/S9ojacuzGvdLH8Mf9bXOBvsxLEEfUHb3eWWQIYAM++0fOjhVF33ucescQCrfzBC0GG2e+rqbuypREWTXvdNOVQBUAEQmoeJjgG0cbpAmWQeso6+F7s1oDaO1Jvta75as4= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Mailer:Message-ID:Date:From:Reply-To:Subject:To:MIME-Version:Content-Type; b=AUN8lIv4QwlkGVKWMlp5dQ3Y7uQmBgK7ApDTlDcdB70L9st3Kds9e01aDlsSOnpAflo6sHlZhKYsqeVzlEDR0zx5XjKlY3LwJqSqn7M5by7JptCZFiMau4j5uuxZMla9FoY3RDxfwxHGNInAPxstNYxcVVi7b8fhYqlRgeuyuvI=; X-YMail-OSG: Q2keSYIVM1n5mLAfxd7J7zWy79sbF7iyPmCqdG_.tAFGthr bSjy9Hnrmq6ueRlBwKOC94ghSh7MQxxApljZxzxiHsD190.KnRKe_kFvX.uL 2YwMC_5cqZtt2rhVUruJu1XaC9Z0qBddvl4iaLT8MXRHnwvfd3vYgg4qoQrp Qd_SzDOHxoZcnYyWF.kQH0AAx41kibi34NixcJoCBkMZR75JTsvJ8sOjRN89 ipfppGgFlsidzNIvyGLEIRG5s7i0e6MZYhfBoCrKwSyKzorvBteV3lqJvTzV Yz0FDA5Dfbqo6z0RPyobucQ2D_svDHLH4fZCING3VHqO0JkGirXfoimZXUIj G0ZRoJUADqquX48f2EM.fEJjms5foYAjB3d1qCvuyTmBpsa4rFEYcf_Yw.Lx MBCoYw2Bo1zw.HIbRnzRPZ5KJ1jD1dvKPM91kxiq.9g73eVdDGuwmmfWUjJc qGpJCVUBG564hCLWcyVNlMBzJlN9vxJyAexcUdPvmw_3S6NT4 Received: from [208.185.20.30] by web160903.mail.bf1.yahoo.com via HTTP; Mon, 04 Mar 2013 18:12:29 PST X-Mailer: YahooMailWebService/0.8.135.514 Message-ID: <1362449549.71503.GenericBBA@web160903.mail.bf1.yahoo.com> Date: Mon, 4 Mar 2013 18:12:29 -0800 (PST) From: Wei Zhu Reply-To: Wei Zhu Subject: Re: what size file for LCS is best for 300-500G per node? To: user@cassandra.apache.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Virus-Checked: Checked by ClamAV on apache.org We have 200G and ended going with 10M. The compaction after repair takes a day to finish. Try to run a repair and see how it goes. -Wei ----- Original Message ----- From: "Dean Hiller" To: user@cassandra.apache.org Sent: Monday, March 4, 2013 10:52:27 AM Subject: what size file for LCS is best for 300-500G per node? Should we really be going with 5MB when it compresses to 3MB? That seems to be on the small side, right? We have ulimit cranked up so many files "shouldn't" be an issue but maybe we should go to 10MB or 100MB or something in between? Does anyone have any experience with changing the LCS sizes? I do read somewhere startup times of opening 100,000 files could be slow????? Which implies a larger size so less files might be better? Thanks, Dean