Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 48774 invoked from network); 2 Feb 2011 18:30:08 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 2 Feb 2011 18:30:08 -0000 Received: (qmail 97033 invoked by uid 500); 2 Feb 2011 18:30:06 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 96873 invoked by uid 500); 2 Feb 2011 18:30:02 -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 96865 invoked by uid 99); 2 Feb 2011 18:30:02 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 02 Feb 2011 18:30:02 +0000 X-ASF-Spam-Status: No, hits=-0.7 required=5.0 tests=FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of chris.burroughs@gmail.com designates 209.85.216.44 as permitted sender) Received: from [209.85.216.44] (HELO mail-qw0-f44.google.com) (209.85.216.44) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 02 Feb 2011 18:29:53 +0000 Received: by qwi2 with SMTP id 2so276876qwi.31 for ; Wed, 02 Feb 2011 10:29:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:message-id:date:from:user-agent:mime-version:to :subject:references:in-reply-to:content-type :content-transfer-encoding; bh=ettl901xhCWPfI1UPiG/oXBqYxA8YcmTSmarkCxAq9o=; b=kb7uyfwNs/E5J+669vvRfodaBoNn46PDeHoX6lj/M486bn/9OAKiKk+jqAavFeA35h D1cVRZ0XdGAnY4pJ8KB7BsrAW15CYAX266bkVjBMN8kki+1qxcMdtJ9/ROVyoRwOKWTV fb0AgQHM572xjKEvYddUYsX4F784wSL8EeDpM= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; b=v7LoFFQrd1PZdgTdDGW+hSzo+GyBbS5nrRnYjB3vPGi0NqltxiEe4j2ksvOYQbCqQp xOe22eQqIUeewsHFVXYAVYBz0ZQ2TXZ9mpGE0s4q+EZAe0ttEOoa1lCi1LaG+UaDfuL7 SUgAk3Ax4EabJHVObl26jKUhUnbw8YclR/czM= Received: by 10.224.37.135 with SMTP id x7mr2206941qad.338.1296671372398; Wed, 02 Feb 2011 10:29:32 -0800 (PST) Received: from [10.10.17.82] (cl-pat-tr.clearspring.com [8.18.54.254]) by mx.google.com with ESMTPS id p13sm16661912qcu.29.2011.02.02.10.29.30 (version=SSLv3 cipher=RC4-MD5); Wed, 02 Feb 2011 10:29:31 -0800 (PST) Message-ID: <4D49A289.8000504@gmail.com> Date: Wed, 02 Feb 2011 13:29:29 -0500 From: Chris Burroughs User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.12) Gecko/20100826 Thunderbird/3.0.7 MIME-Version: 1.0 To: user@cassandra.apache.org Subject: Re: reduced cached mem; resident set size growth References: <4D41A9FB.4070300@gmail.com> <4D437940.6070500@gmail.com> <4D496896.1050702@gmail.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Virus-Checked: Checked by ClamAV on apache.org On 02/02/2011 12:49 PM, Ryan King wrote: > We're seeing a similar problem with one of our clusters (but over a > longer time scale). Its possible that its not a leak, but just > fragmentation. Unless you've told it otherwise, the jvm uses glibc's > malloc implementation for off-heap allocations. We're currently > running a test with jemalloc on one node to see if the problem goes > away. > Thanks Ryan. Is it over a longer time scale because of some action taken to mitigate the problem, or has it always been that long for you?