From owner-freebsd-java@FreeBSD.ORG  Mon Nov 13 10:39:46 2006
Return-Path: <owner-freebsd-java@FreeBSD.ORG>
X-Original-To: freebsd-java@freebsd.org
Delivered-To: freebsd-java@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id E54EB16A416
	for <freebsd-java@freebsd.org>; Mon, 13 Nov 2006 10:39:46 +0000 (UTC)
	(envelope-from shudo@computer.org)
Received: from www721.sakura.ne.jp (www721.sakura.ne.jp [59.106.19.171])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 1C1DF43D93
	for <freebsd-java@freebsd.org>; Mon, 13 Nov 2006 10:38:32 +0000 (GMT)
	(envelope-from shudo@computer.org)
Received: from utagoe.com (softbank219179114027.bbtec.net [219.179.114.27])
	(authenticated bits=0)
	by www721.sakura.ne.jp (8.12.11/8.12.11) with ESMTP id kADAcQe6059096
	for <freebsd-java@freebsd.org>; Mon, 13 Nov 2006 19:38:28 +0900 (JST)
	(envelope-from shudo@computer.org)
Date: Mon, 13 Nov 2006 19:38:35 +0900 (JST)
Message-Id: <20061113.193835.719888658.shudo@utagoe.com>
To: freebsd-java@freebsd.org
From: Kazuyuki Shudo <shudo@computer.org>
In-Reply-To: <20061113001106.GA74300@ace.b020.ceid.upatras.gr>
References: <20061111035758.GA88440@ace.b020.ceid.upatras.gr>
	<20061112.214630.485563740.shudo@utagoe.com>
	<20061113001106.GA74300@ace.b020.ceid.upatras.gr>
X-Mailer: Mew version 5.1 on XEmacs 21.4.19 (Constant Variable)
Mime-Version: 1.0
Content-Type: Text/Plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Subject: Re: Performance of Java on FBSD vs. others...
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: Mon, 13 Nov 2006 10:39:47 -0000

Hi Nikos,

> On Sun, Nov 12, 2006 at 09:46:30PM +0900, Kazuyuki Shudo wrote:
> > I found your code does polling with 50 msec sleeps between checks in
> > src/netcins/p2p/dhs/testing/DHSSingleMetricTest.java:
>
> Yes. I've already changed all those Thread.sleep(...) calls to
> Thread.yield() (which, if i got it right from the jdk source code,
> translates to a sleep(1) on freebsd).

So we guess you say you've already done the following too:

    PastryNode pn = ...

    synchronized (pn) {
      while (!pn.isReady()) {
        try {
          pn.wait();
        } catch (InterruptedException e) {
          System.out.println(e);
        }
      }
    }

We should not do polling with PastryNode#isReady() because we can
Object#wait() on an instance of PastryNode.


| On Sun, Nov 12, 2006 at 09:46:30PM +0900, Kazuyuki Shudo wrote:

| Anyway, JDK 5.0 on FreeBSD seems not to perform as well as on Linux
| and Windows.

Anyway, on FreeBSD, even polling should perform as well as on Linux
and Windows.

  Kazuyuki Shudo	2006@shudo.net		http://www.shudo.net/