Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 48520 invoked from network); 12 Apr 2011 05:12:13 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 12 Apr 2011 05:12:13 -0000 Received: (qmail 82905 invoked by uid 500); 12 Apr 2011 05:12:11 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 82886 invoked by uid 500); 12 Apr 2011 05:12:11 -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 82878 invoked by uid 500); 12 Apr 2011 05:12:09 -0000 Delivered-To: apmail-incubator-cassandra-user@incubator.apache.org Received: (qmail 82874 invoked by uid 99); 12 Apr 2011 05:12:08 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 12 Apr 2011 05:12:08 +0000 X-ASF-Spam-Status: No, hits=2.0 required=5.0 tests=FREEMAIL_FROM,SPF_NEUTRAL,T_TO_NO_BRKTS_FREEMAIL,URI_HEX X-Spam-Check-By: apache.org Received-SPF: neutral (nike.apache.org: 216.139.236.26 is neither permitted nor denied by domain of mohitanchlia@gmail.com) Received: from [216.139.236.26] (HELO sam.nabble.com) (216.139.236.26) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 12 Apr 2011 05:12:01 +0000 Received: from jim.nabble.com ([192.168.236.80]) by sam.nabble.com with esmtp (Exim 4.69) (envelope-from ) id 1Q9Vt6-0008Vn-GW for cassandra-user@incubator.apache.org; Mon, 11 Apr 2011 22:11:40 -0700 Date: Mon, 11 Apr 2011 22:11:40 -0700 (PDT) From: mcasandra To: cassandra-user@incubator.apache.org Message-ID: <1302585100501-6263859.post@n2.nabble.com> In-Reply-To: <0703396A-9411-4083-92EE-36568CEEFC49@thelastpickle.com> References: <1302545913902-6262430.post@n2.nabble.com> <1302559004044-6263087.post@n2.nabble.com> <64E93C6B-6E54-4910-AAEE-C5DC3A4D0B1F@thelastpickle.com> <1302563886592-6263270.post@n2.nabble.com> <1302570129549-6263470.post@n2.nabble.com> <0703396A-9411-4083-92EE-36568CEEFC49@thelastpickle.com> Subject: Re: Timeout during stress test MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Virus-Checked: Checked by ClamAV on apache.org aaron morton wrote: > > You'll need to provide more information, from the TP stats the read stage > could not keep up. If the node is not CPU bound then it is probably IO > bound. > > > What sort of read? > How many columns was it asking for ? > How many columns do the rows have ? > Was the test asking for different rows ? > How many ops requests per second did it get up to? > What do the io stats look like ? > What does nodetool cfhistograms say ? > It's simple read of 1M rows with one column of avg size of 200K. Got around 70 req per sec. Not sure how to intepret the iostats output with things happening async in cassandra. Can you give little description on how to interpret it? I have posted output of cfstats. Does cfhistograms provide better info? -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Timeout-during-stress-test-tp6262430p6263859.html Sent from the cassandra-user@incubator.apache.org mailing list archive at Nabble.com.