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 D5CDD90AA for ; Fri, 7 Oct 2011 08:04:50 +0000 (UTC) Received: (qmail 6163 invoked by uid 500); 7 Oct 2011 08:04:48 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 6055 invoked by uid 500); 7 Oct 2011 08:04:48 -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 6047 invoked by uid 99); 7 Oct 2011 08:04:48 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 07 Oct 2011 08:04:48 +0000 X-ASF-Spam-Status: No, hits=2.2 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_NONE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: local policy) Received: from [208.113.200.5] (HELO homiemail-a54.g.dreamhost.com) (208.113.200.5) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 07 Oct 2011 08:04:43 +0000 Received: from homiemail-a54.g.dreamhost.com (localhost [127.0.0.1]) by homiemail-a54.g.dreamhost.com (Postfix) with ESMTP id 87D073A4065 for ; Fri, 7 Oct 2011 01:04:17 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; c=nofws; d=thelastpickle.com; h=from :mime-version:content-type:subject:date:in-reply-to:to :references:message-id; q=dns; s=thelastpickle.com; b=TNKSE/IS2z E+HjKcHjhHfM9cPAGlupQGSgUzf+VC0W4NcM1CMWF1PG6lg9l3uG29BXe+7RMt8D q6wVLR3ZNEwCZ9VhWsfXGX05lQfn8ekpNUN8RPesu/WXtzng7fWxvXuGJqo6DxHn fXDbdy/syeRE/ytPG+5lOUIUFgL6gtnfg= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=thelastpickle.com; h=from :mime-version:content-type:subject:date:in-reply-to:to :references:message-id; s=thelastpickle.com; bh=Nz7U60FKLr9mTx/Y KodH9SHa0SM=; b=lpEbrY19rcrEpLlztF3ljPxJf2vgAr6sk+yHqIJu/1pYb8sb SfwQa9kOQGkfuB4FT8NERYmKG7TaZZPXWK4Y08yich8m9I/z/JL6fQsleETOsUXW a55kF3HrgzwBvOdyvtIbwEARCh0+8w0x3u8dKHW2nBIXi1rf6mGWX26CIZY= Received: from [172.16.1.4] (222-152-101-125.jetstream.xtra.co.nz [222.152.101.125]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: aaron@thelastpickle.com) by homiemail-a54.g.dreamhost.com (Postfix) with ESMTPSA id 13EBD3A4061 for ; Fri, 7 Oct 2011 01:04:16 -0700 (PDT) From: aaron morton Mime-Version: 1.0 (Apple Message framework v1244.3) Content-Type: multipart/alternative; boundary="Apple-Mail=_C2731D1D-4C8E-4157-98B6-A4E423FF0B8C" Subject: Re: how to reduce disk read? (and bloom filter performance) Date: Fri, 7 Oct 2011 21:04:15 +1300 In-Reply-To: <4E8EA5B3.2020601@sendmail.cz> To: user@cassandra.apache.org References: <4E8EA5B3.2020601@sendmail.cz> Message-Id: X-Mailer: Apple Mail (2.1244.3) --Apple-Mail=_C2731D1D-4C8E-4157-98B6-A4E423FF0B8C Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=iso-8859-1 Of the top of my head I it's not exposed via nodetool.=20 You can get it via HTTP if you install mx4j or if you could try = http://wiki.cyclopsgroup.org/jmxterm Cheers ----------------- Aaron Morton Freelance Cassandra Developer @aaronmorton http://www.thelastpickle.com On 7/10/2011, at 8:09 PM, Radim Kolar wrote: > Dne 16.9.2011 8:20, Yang napsal(a): >> I looked at the JMX attributes >> CFS.BloomFilterFalseRatio, it's 1.0 , BloomFilterFalsePositives, it's >> 2810, > its possible to query this bloom filter false ratio from command line? --Apple-Mail=_C2731D1D-4C8E-4157-98B6-A4E423FF0B8C Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=iso-8859-1 Of = the top of my head I it's not exposed via = nodetool. 

You can get it via HTTP if you = install mx4j or if you could try http://wiki.cyclopsgroup.org= /jmxterm

Cheers

http://www.thelastpickle.com

On 7/10/2011, at 8:09 PM, Radim Kolar wrote:

Dne = 16.9.2011 8:20, Yang napsal(a):
 I = looked at the JMX attributes
CFS.BloomFilterFalseRatio, it's 1.0 , = BloomFilterFalsePositives, it's
2810,
its possible to query this bloom = filter false ratio from command = line?

= --Apple-Mail=_C2731D1D-4C8E-4157-98B6-A4E423FF0B8C--