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 A5BF8105CE for ; Mon, 6 May 2013 21:13:09 +0000 (UTC) Received: (qmail 16805 invoked by uid 500); 6 May 2013 21:13:07 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 16768 invoked by uid 500); 6 May 2013 21:13:07 -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 16760 invoked by uid 99); 6 May 2013 21:13:07 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 06 May 2013 21:13:07 +0000 X-ASF-Spam-Status: No, hits=-0.1 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_MED,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of btalbot@aeriagames.com designates 74.125.149.71 as permitted sender) Received: from [74.125.149.71] (HELO na3sys009aog103.obsmtp.com) (74.125.149.71) by apache.org (qpsmtpd/0.29) with SMTP; Mon, 06 May 2013 21:13:02 +0000 Received: from mail-bk0-f70.google.com ([209.85.214.70]) (using TLSv1) by na3sys009aob103.postini.com ([74.125.148.12]) with SMTP ID DSNKUYgcyQQCeNEQuiCtPVtcNeL6PZnHolfn@postini.com; Mon, 06 May 2013 14:12:42 PDT Received: by mail-bk0-f70.google.com with SMTP id j4so5641185bkw.9 for ; Mon, 06 May 2013 14:12:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=aeriagames.com; s=google; h=x-received:mime-version:x-received:in-reply-to:references:date :message-id:subject:from:to:content-type; bh=7ZnwEyWWz2Hh0+iVHsxuoejv8pxaQSTwPY3fqM5B18Y=; b=Jf3RLi7vZLoLXh7fWEuUOJ8VHQHNcL+YBEQNP+Im76XePxxouCXO/7cEermpM9sUJ5 cnVBWCFDkF58psn0SPS3HfcWTrhiGjFWOJYKYXuvW1cBW5Yyxu8cbqPoZRAUw+mv4LXu cJiy9lblMQ4GJiNq5H9VgkNwwwX0WuS26sFXM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=x-received:mime-version:x-received:in-reply-to:references:date :message-id:subject:from:to:content-type:x-gm-message-state; bh=7ZnwEyWWz2Hh0+iVHsxuoejv8pxaQSTwPY3fqM5B18Y=; b=L7TL41c3AuahVl1T7tGOfW4XlL8k1MHbvkAvj9hkP0usa4Fcwd/LLV8MkjLgStO80Y cuSYLgd3ojx00PH4hbhqDzLroXcPEWlhWRHfhPPJ23MSxdFinSMymm9Litfd+XYu/7MS zZ+X2Stg/mVy+gGLH+6ZU/ShxP9sdV64fxhJBl3s+2B2IcQVFR7gApqH3GihrjWzaLUc d2GUMj7WE3l0vlY/AlYVj8VTxqi/edQcF0jfm1qpMmeqaiTzCaMKPoaZSM4SHQAD414Y dOv8QriJVCsjL2abnrVnRqc1hyH0prPu58XoVA5/p16mFfp5I4AsAf+ppMy9iuLXm/xK FMdw== X-Received: by 10.112.200.104 with SMTP id jr8mr8116522lbc.5.1367874760149; Mon, 06 May 2013 14:12:40 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.112.200.104 with SMTP id jr8mr8116515lbc.5.1367874759785; Mon, 06 May 2013 14:12:39 -0700 (PDT) Received: by 10.114.78.198 with HTTP; Mon, 6 May 2013 14:12:39 -0700 (PDT) In-Reply-To: References: Date: Mon, 6 May 2013 14:12:39 -0700 Message-ID: Subject: Re: Cassandra running High Load with no one using the cluster From: Bryan Talbot To: user@cassandra.apache.org Content-Type: multipart/alternative; boundary=001a11c36d1227902104dc13292c X-Gm-Message-State: ALoCoQm0vcdUDXAriqgnMSUbt+Q84fTHdILncSmN+gj9iJPIGKNN0pgcoY5IV2JPtYqnzPjmWFSkocR1jirN3+j4zdfJXTkFLg0LxmxaRsrrz21kbLZMm//wEatyWoZO7WeOn40BxFfYm6VLZmcw2t/DOwFeC02V9VEFltRoc+4jKlWTIQzAURM= X-Virus-Checked: Checked by ClamAV on apache.org --001a11c36d1227902104dc13292c Content-Type: text/plain; charset=UTF-8 On Sat, May 4, 2013 at 9:22 PM, Aiman Parvaiz wrote: > > When starting this cluster we set > > JVM_OPTS="$JVM_OPTS -Xss1000k" > > > Why did you increase the stack-size to 5.5 times greater than recommended? Since each threads now uses 1000KB minimum just for the stack, a large number of threads will use a large amount of memory. -Bryan --001a11c36d1227902104dc13292c Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
On Sat, May 4, 2013 at 9:22 PM, Aiman Parvaiz <aiman@= grapheffect.com> wrote:

When starting this cluster we set=C2=A0
> JVM_OPTS=3D"$JV= M_OPTS -Xss1000k"




Why did you increase the stack-s= ize to 5.5 times greater than recommended? =C2=A0Since each threads now use= s 1000KB minimum just for the stack, a large number of threads will use a l= arge amount of memory.

-Bryan
=C2=A0
--001a11c36d1227902104dc13292c--