Date: Mon, 23 Jan 2006 16:44:13 +1100 From: Michael Vince <mv@roq.com> To: Greg Lewis <glewis@eyesbeyond.com> Cc: java@freebsd.org, Huang wen hui <hwh@gddsn.org.cn> Subject: Re: Performance patch for jdk1.5.0/amd64 Message-ID: <43D46D2D.1040405@roq.com> In-Reply-To: <20060115223811.GA66735@misty.eyesbeyond.com> References: <43C92741.7000803@gddsn.org.cn> <43CA19C4.8050202@gddsn.org.cn> <20060115223811.GA66735@misty.eyesbeyond.com>
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Hi, Does you have this patch as an attached file? I tried to use this patch but it appears to be mangled and didn't work on the latest jdk15 in the ports tree for me. I really want to use this. Regards, Mike Greg Lewis wrote: >On Sun, Jan 15, 2006 at 05:45:40PM +0800, Huang wen hui wrote: > > >>Huang wen hui wrote: >> >> >> >>>hi, >>>I recently notice that jdk1.5.0-p2/amd64 is slower than jdk1.5.0-p2/i386 >>>on the same hardware in some situation. >>> >>> >>> >>> >>I only got this problem on EM64T box, the "real" amd64 box do not affect. >> >> > >It looks like something to do with AMD64 having prefetchw and EM64T needing >to use prefetcht0 instead. > > >
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