Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 13343 invoked from network); 6 Apr 2011 00:40:44 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 6 Apr 2011 00:40:44 -0000 Received: (qmail 44216 invoked by uid 500); 6 Apr 2011 00:40:42 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 44191 invoked by uid 500); 6 Apr 2011 00:40:42 -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 44183 invoked by uid 99); 6 Apr 2011 00:40:42 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 06 Apr 2011 00:40:42 +0000 X-ASF-Spam-Status: No, hits=-0.0 required=5.0 tests=RCVD_IN_DNSWL_NONE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: local policy) Received: from [208.113.200.5] (HELO homiemail-a51.g.dreamhost.com) (208.113.200.5) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 06 Apr 2011 00:40:35 +0000 Received: from homiemail-a51.g.dreamhost.com (localhost [127.0.0.1]) by homiemail-a51.g.dreamhost.com (Postfix) with ESMTP id 26C872E8058 for ; Tue, 5 Apr 2011 17:40:12 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; c=nofws; d=thelastpickle.com; h=content-type :mime-version:subject:from:in-reply-to:date :content-transfer-encoding:message-id:references:to; q=dns; s= thelastpickle.com; b=NE06QYkqoO+MpFndidfrNJs06TsxrD8gXNaXxvAnKtb tbwKMzj98Je+9swcinpWC4x3/mVAEEAkiEj6IkkRMNpLX/58RO2sc2hq+3acBWe8 epgKw18pxZSbkVqn9hj+G02I9SagRg4Znbi1RPs6pmuOEpgc27vwwcv/jKD+Ptkk = DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=thelastpickle.com; h= content-type:mime-version:subject:from:in-reply-to:date :content-transfer-encoding:message-id:references:to; s= thelastpickle.com; bh=Xf4+BskzsuP63C2oDjOVXRhcOwo=; b=FcAV4m6bBZ bUT/AB+4ePoXP92JtbfSnXTd+wPOCFYFRif0/L53+riFxnjlTnYNxGFSkpcWmTxE T0gZm4NJxiXp5Yyr33yDFpKIeRk8V7Kx49Z0CNOwuv0t5fhxxezszcYpk/Y0SReM S75J3RrDwiwJZzwNbilwTu2uQmJ9sqKUg= Received: from [192.168.182.85] (unknown [203.173.40.4]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: aaron@thelastpickle.com) by homiemail-a51.g.dreamhost.com (Postfix) with ESMTPSA id 998192E8057 for ; Tue, 5 Apr 2011 17:40:11 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Apple Message framework v1082.1) Subject: Re: nodetool move hammers the next node in the ring From: aaron morton In-Reply-To: Date: Wed, 6 Apr 2011 10:40:09 +1000 Content-Transfer-Encoding: quoted-printable Message-Id: References: To: user@cassandra.apache.org X-Mailer: Apple Mail (2.1082.1) X-Virus-Checked: Checked by ClamAV on apache.org Not that I know of, may be useful to be able to throttle things. But if = the receiving node has little head room it may still be overwhelmed. Currently there is a single thread for streaming. If we were to throttle = it may be best to make it multi threaded with a single concurrent stream = per end point.=20 Out of interest how many nodes do you have and whats the RF? Aaron On 6 Apr 2011, at 01:16, Jonathan Colby wrote: >=20 > When doing a move, decommission, loadbalance, etc. data is streamed = to the next node in such a way that it really strains the receiving node = - to the point where it has a problem serving requests. =20 >=20 > Any way to throttle the streaming of data?