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 00FAF189FD for ; Mon, 5 Oct 2015 18:57:49 +0000 (UTC) Received: (qmail 44367 invoked by uid 500); 5 Oct 2015 18:57:47 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 44331 invoked by uid 500); 5 Oct 2015 18:57:46 -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 44321 invoked by uid 99); 5 Oct 2015 18:57:46 -0000 Received: from Unknown (HELO spamd3-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 05 Oct 2015 18:57:46 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd3-us-west.apache.org (ASF Mail Server at spamd3-us-west.apache.org) with ESMTP id 71E23180233 for ; Mon, 5 Oct 2015 18:57:46 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd3-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: 2.901 X-Spam-Level: ** X-Spam-Status: No, score=2.901 tagged_above=-999 required=6.31 tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=3, URIBL_BLOCKED=0.001] autolearn=disabled Authentication-Results: spamd3-us-west.apache.org (amavisd-new); dkim=pass (1024-bit key) header.d=datastax.com Received: from mx1-us-west.apache.org ([10.40.0.8]) by localhost (spamd3-us-west.apache.org [10.40.0.10]) (amavisd-new, port 10024) with ESMTP id Uv8BsG8z9xK0 for ; Mon, 5 Oct 2015 18:57:33 +0000 (UTC) Received: from mail-ig0-f173.google.com (mail-ig0-f173.google.com [209.85.213.173]) by mx1-us-west.apache.org (ASF Mail Server at mx1-us-west.apache.org) with ESMTPS id 2B9FA20513 for ; Mon, 5 Oct 2015 18:57:33 +0000 (UTC) Received: by igcpb10 with SMTP id pb10so70240825igc.1 for ; Mon, 05 Oct 2015 11:57:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=datastax.com; s=google; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=sf0xqGSBz7iPHJeiUslM1psySrxs3/nAsoVc3TPdw7c=; b=nURBMDwMZl7izob7uMYFRWJJhlGTDl9xWmLYEBJjAQUY1R4gSYaXcFr4tUquWNEkNj yGOdHYCkv9c4wciV43M7Td7QiCDr0OseXx0mSLl9U9kzMAuWnGRHNFEg92FXXL7MV+am iUl5XKx+agfVjAe+swIsPI9bPVVkVsid3uEns= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:content-type; bh=sf0xqGSBz7iPHJeiUslM1psySrxs3/nAsoVc3TPdw7c=; b=fqWPooYWHfYz43MlwuYvHS3kokHxpqZV7WGeJU3ID+0Bj6vwi1f7NwoaJPqjzfSsf2 tQmEfphHxCy+z1xijcCsR9EyhojYoTK2H+P2Hh5sEmQBqyuanI/rMZNX73A7r4DtnKwQ vuhf7HtDF8LGsOeo2i5c0RLyCDzuxHzmXdaZ00i6hhFNs8LlXg/2SD+vrLBq4tV9TTW0 HG8OBrB6/ABo+h9vHhL/5a5NopAk9Igqi/823wEQrwUR0Dg7I/nlWBd0XJpkLx7VdlwJ ocyr+Kt9hRs/7GcWvU4Vb4RQ5RasSjx+sXxexJ9VYOr+3N7OmcYPLxLg+7dbBPlOp4gg cUjA== X-Gm-Message-State: ALoCoQkWQ5qH8xSH482aFRaXCfyj8XKG7pf6r3TEVZlPtT2jeDlyaWQwI7Y/o9HH4R7vyGzNrArt MIME-Version: 1.0 X-Received: by 10.50.30.101 with SMTP id r5mr6603521igh.35.1444071452414; Mon, 05 Oct 2015 11:57:32 -0700 (PDT) Received: by 10.36.103.8 with HTTP; Mon, 5 Oct 2015 11:57:32 -0700 (PDT) In-Reply-To: References: Date: Mon, 5 Oct 2015 19:57:32 +0100 Message-ID: Subject: Re: Is HEAP_NEWSIZE configuration is no more useful from cassandra 2.1 ? From: Mark Curtis To: user@cassandra.apache.org Content-Type: multipart/alternative; boundary=047d7bdca97ef3bdb1052160159c --047d7bdca97ef3bdb1052160159c Content-Type: text/plain; charset=UTF-8 Just to add some credibility to not using this setting. I've also seen information on Oracle's blogs too: http://www.oracle.com/technetwork/articles/java/g1gc-1984535.html Hope that helps Mark On 5 October 2015 at 08:59, Daniel Chia wrote: > G1GC still has an Eden size, however, it's strongly recommended *NOT* to > set the new gen size G1GC and just let it figure it out based on your > target pause time. > > Thanks, > Daniel > > On Sun, Oct 4, 2015 at 4:11 PM, Tushar Agrawal > wrote: > >> If you are using CMS garbage collector then you still have to set the >> HEAP_NEWSIZE. With G1GC (new recommended GC) there is no concept of New or >> Older generation. >> >> On Sun, Oct 4, 2015 at 5:30 PM, Kiran mk wrote: >> >>> Is HEAP_NEWSIZE configuration is no more useful from cassandra 2.1 ? >>> >>> Best Regards, >>> Kiran.M.K. >>> >> >> > --047d7bdca97ef3bdb1052160159c Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Just to add some credibility to not using this setting. I&= #39;ve also seen information on Oracle's blogs too:


Hope that helps
=

Mark


On 5 October 2015 at 08:59, Daniel Chia <danchia@coursera.org> wrote:
G1GC still has an Eden size, however, it's strongly= recommended *NOT* to set the new gen size G1GC and just let it figure it o= ut based on your target pause time.

Thanks,
Daniel

On Sun, Oct 4, 2015 at 4:11 PM, Tushar Agraw= al <agrawal.tushar@gmail.com> wrote:
If you are using CMS garbage collector t= hen you still have to set the HEAP_NEWSIZE. With G1GC (new recommended GC) = there is no concept of New or Older generation.

On Sun, Oct 4, 2015 at 5:30= PM, Kiran mk <coolkiran2006@gmail.com> wrote:

Is HEAP_NEWSIZE configuration is = no more useful from cassandra 2.1 ?

Best Regards,
Kiran.M.K.




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