From owner-freebsd-java@FreeBSD.ORG  Thu Jan  8 17:44:02 2009
Return-Path: <owner-freebsd-java@FreeBSD.ORG>
Delivered-To: freebsd-java@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 78C3F10656CC
	for <freebsd-java@freebsd.org>; Thu,  8 Jan 2009 17:44:02 +0000 (UTC)
	(envelope-from brian@experts-exchange.com)
Received: from mail.experts-exchange.com (mail.experts-exchange.com
	[64.156.132.251])
	by mx1.freebsd.org (Postfix) with ESMTP id 1AFEA8FC16
	for <freebsd-java@freebsd.org>; Thu,  8 Jan 2009 17:44:02 +0000 (UTC)
	(envelope-from brian@experts-exchange.com)
Received: from [192.168.103.26] (unknown [72.29.180.81])
	by mail.experts-exchange.com (Postfix) with ESMTP id 447034A306EC;
	Thu,  8 Jan 2009 09:43:57 -0800 (PST)
Message-ID: <49663B64.5040204@experts-exchange.com>
Date: Thu, 08 Jan 2009 09:44:04 -0800
From: Brian Gardner <brian@experts-exchange.com>
User-Agent: Thunderbird 2.0.0.19 (Windows/20081209)
MIME-Version: 1.0
To: Greg Lewis <glewis@eyesbeyond.com>
References: <4963E688.2060005@experts-exchange.com>
	<20090108044605.GA26885@misty.eyesbeyond.com>
In-Reply-To: <20090108044605.GA26885@misty.eyesbeyond.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: freebsd-java@freebsd.org
Subject: Re: jmap
X-BeenThere: freebsd-java@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Porting Java to FreeBSD <freebsd-java.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-java>,
	<mailto:freebsd-java-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-java>
List-Post: <mailto:freebsd-java@freebsd.org>
List-Help: <mailto:freebsd-java-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-java>,
	<mailto:freebsd-java-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 08 Jan 2009 17:44:03 -0000

Are there alternates methods available to access heap information from a 
running vm?  This seems quite essential for tuning so I'd like to think 
there is something out there.

Greg Lewis wrote:
> On Tue, Jan 06, 2009 at 03:17:28PM -0800, Brian Gardner wrote:
>   
>> I'm trying to use jmap to dump a histo of a running vm, version 
>> jdk-1.6.0.3p4_6.  jmap keeps returning the following error, 'no 
>> providers installed'.  Are these tools supposed to function?  If not are 
>> there any alternates?
>>
>> $ /usr/local/jdk1.6.0/bin/jps
>> 72095 Jps
>> 88259 Bootstrap
>>
>> $ /usr/local/jdk1.6.0/bin/jmap -histo 88259
>> 88259: no providers installed
>>
>> $ ps -jax | grep 88259
>> ee         88259     1 88249 87874    0 I     p0   15:39.48 [java]
>> ee         72142 72094 72141 88505    2 R+    p1    0:00.00 grep 88259
>>     
>
> I don't know for sure, but I'm guessing that jmap requires a
> serviceability agent, which there isn't an implementation of for
> FreeBSD yet.  We basically just either skip building or stub out
> all the code for that.
>
>