Date: Tue, 5 Sep 2000 17:01:22 +0300 From: Panagiotis Astithas <past@netmode.ntua.gr> To: SHUDO Kazuyuki <shudoh@muraoka.info.waseda.ac.jp> Cc: freebsd-java@FreeBSD.ORG Subject: Re: shuJIT 0.6.5 released Message-ID: <20000905170122.A28494@netmode.ece.ntua.gr> In-Reply-To: <200009051343.WAA12926@cafe.muraoka.info.waseda.ac.jp>; from shudoh@muraoka.info.waseda.ac.jp on Tue, Sep 05, 2000 at 10:43:27PM %2B0900 References: <200009051343.WAA12926@cafe.muraoka.info.waseda.ac.jp>
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On Tue, Sep 05, 2000 at 10:43:27PM +0900, SHUDO Kazuyuki wrote: > [Linpack benchmark] http://www.netlib.org/benchmark/linpackjava/ > > This benchmark performs solution of linear equations. > The method of solution is base on Gaussian elimination. > > This benchmark is small and runs in a short time. > Therefore JIT compilers (including IBM's) which adopt > adaptive compilation techniques cannot make a good score. > But, JIT compilers evaluated this time do not use > those techniques in their default settings. > > The followings were made on Pentium II 333 MHz > and Blackdown JDK 1.2.2 FCS. > > OpenJIT 1.1.13 13.464 > shuJIT 0.6.5 13.205 > TYA 1.7v2 11.444 > OpenJIT 1.1.14 10.899 Regarding the difference in the performance of OpenJIT 1.1.13 vs. 1.1.14, would you attribute it in the following change? (from www.openjit.org) REFINE: Change the default value of max_stack_frames (400 -> 43). This value depends on platforms, and several JDK 1.1.8 platforms didn't work with the old default value (400). We now chose the default value to minimize the warm-up time of OpenJIT. The best value for JDK 1.2.2 (both of Blackdown and Sun) is "41" and that for JDK 1.1.8 is "43". Also on this test, is the highest value the best? -past To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-java" in the body of the message
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