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 41A8B6EA3 for ; Wed, 22 Jun 2011 21:24:43 +0000 (UTC) Received: (qmail 90600 invoked by uid 500); 22 Jun 2011 21:24:40 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 90552 invoked by uid 500); 22 Jun 2011 21:24:40 -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 90544 invoked by uid 99); 22 Jun 2011 21:24:40 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 22 Jun 2011 21:24:40 +0000 X-ASF-Spam-Status: No, hits=-0.0 required=5.0 tests=SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of Janne.Jalkanen@ecyrd.com designates 87.108.86.67 as permitted sender) Received: from [87.108.86.67] (HELO mail.ecyrd.com) (87.108.86.67) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 22 Jun 2011 21:24:31 +0000 Received: from [192.168.0.10] (cs181095019.pp.htv.fi [82.181.95.19]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by mail.ecyrd.com (Postfix) with ESMTPSA id 16C4B97C14A for ; Thu, 23 Jun 2011 00:24:11 +0300 (EEST) From: Janne Jalkanen Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Subject: Munin plugins stupid question Date: Thu, 23 Jun 2011 00:24:10 +0300 Message-Id: <2EA9FD8F-B256-4771-A32C-50D3B8F982E2@ecyrd.com> To: user@cassandra.apache.org Mime-Version: 1.0 (Apple Message framework v1084) X-Mailer: Apple Mail (2.1084) X-Virus-Checked: Checked by ClamAV on apache.org Heya! I know I should probably be able to figure this out on my own, but... The Cassandra Munin plugins (all of them) define in their = storageproxy_latency.conf the following (this is from a 0.6 config): read_latency.jmxObjectName org.apache.cassandra.db:type=3DStorageProxy read_latency.jmxAttributeName TotalReadLatencyMicros read_latency.type DERIVE read_latency.cdef read_latency,3000000,/ Ok... Why is the derived difference divided by 3 million? A = three-second update interval? /Janne=