Return-Path: Delivered-To: apmail-jakarta-jmeter-user-archive@www.apache.org Received: (qmail 98755 invoked from network); 29 Nov 2010 09:00:09 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 29 Nov 2010 09:00:09 -0000 Received: (qmail 12162 invoked by uid 500); 29 Nov 2010 09:00:08 -0000 Delivered-To: apmail-jakarta-jmeter-user-archive@jakarta.apache.org Received: (qmail 12055 invoked by uid 500); 29 Nov 2010 09:00:08 -0000 Mailing-List: contact jmeter-user-help@jakarta.apache.org; run by ezmlm Precedence: bulk List-Unsubscribe: List-Help: List-Post: List-Id: "JMeter Users List" Reply-To: "JMeter Users List" Delivered-To: mailing list jmeter-user@jakarta.apache.org Received: (qmail 12047 invoked by uid 99); 29 Nov 2010 09:00:07 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 29 Nov 2010 09:00:07 +0000 X-ASF-Spam-Status: No, hits=4.4 required=10.0 tests=FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_NONE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of xieliang007@gmail.com designates 74.125.83.44 as permitted sender) Received: from [74.125.83.44] (HELO mail-gw0-f44.google.com) (74.125.83.44) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 29 Nov 2010 09:00:02 +0000 Received: by gwj17 with SMTP id 17so2154449gwj.31 for ; Mon, 29 Nov 2010 00:59:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=OJA/2HsdtYrkFCPZbY9mzgkpZR8oBvTJrH4Jd+BD13k=; b=lfVw2VDFLTrr/pUypHMUuSCAFAXocUTk7fwplnk3YtKDbtso3wnD9tY3PnvarIiYdi ni/2cZWNe6qkpRyhydcwUyf0v4i7gDh/7GcLSAuc9kGJZYl7jdq2HEQOv4YMWIZHsl0Z 1b5HGUTQ9MvWgzuzAl73yD4oqiy0drCk1X40Q= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=HJAcxXnmQFVXf0gPNw4MGjKY6VAw4HaueyL5TRObemDyP0t0IFQlTLAbU76Ylg4zhM USEfOqfY3BspAgQiL2+rDd0fVfDy9aJzr6oxbV15OEGckl5Ex2ZzsmKo15C2gqa8d+TP SfT5HHWrA4SjZOU/54K3DdTvhZyuL2Uu9WfpM= MIME-Version: 1.0 Received: by 10.100.37.15 with SMTP id k15mr4082224ank.133.1291021181671; Mon, 29 Nov 2010 00:59:41 -0800 (PST) Received: by 10.236.95.42 with HTTP; Mon, 29 Nov 2010 00:59:41 -0800 (PST) In-Reply-To: References: Date: Mon, 29 Nov 2010 16:59:41 +0800 Message-ID: Subject: Re: JVM tuning From: liang xie To: JMeter Users List Content-Type: multipart/alternative; boundary=0016e64c3e22ee63af04962d4a76 --0016e64c3e22ee63af04962d4a76 Content-Type: text/plain; charset=ISO-8859-1 It's not correct : "starting with JDK version 1.5, on server-class machines, VM automatically chooses CMS as the collector for the old generation." In deed, the default GC mode for old generation is Parallel GC in JDK6, you need to specify "-XX:UseConcMarkSweepGC" for CMS mode explicitly : ) 2010/11/29 vineeta vashistha > Liang, > > Java technology-based applications can be instructed to run with CMS for > the > old generation by specifying -XX:UseConcMarkSweepGC. However, starting with > JDK version 1.5, on server-class machines, VM automatically chooses CMS as > the collector for the old generation. > > Please refer the following link. > > *http://www.sun.com/bigadmin/content/submitted/cms_gc_logs.jsp*< > http://www.sun.com/bigadmin/content/submitted/cms_gc_logs.jsp> > > Regards, > Vineeta > > On Mon, Nov 29, 2010 at 6:23 AM, liang xie wrote: > > > Try CMS GC mode > > > > 2010/11/26 vineeta vashistha > > > > > I am using jdk.1.6 > > > My System is getting paused for 5 minutes at the time of GC. > > > > > > Please suggest some settings so that system doesn't pause for such a > long > > > duration. > > > > > > Regards, > > > Vineeta > > > > > > --0016e64c3e22ee63af04962d4a76--