Rock3的Linux博客 just a tech blog
Just a tech blog. 环境 CentOS 6.4 x86 64 with gcc 4.4.7 glibc 2.12. 现象 32位CFLAGS -m32的ECC测试程序能够正确的执行64位 CFLAGS -m64 的ECC测试程序卡住不返回经过简单调试发现其卡在一个椭圆曲线点乘函数EC POINT mul里没有返回 通常的思路就是从具体的出错点开始分析也就是 EC POINT mul函数 经过在代码中添加打印例如 printfsd n, func , LINE ;. 发现32位测试中 EC POINT mul中. 此时想到性能问题可以使用oprofile和perf进行分析运行了一下perf records pref report,发现一个奇特现象 64位程序99的时间片都在执行一个函数 bn mul add words 期间考虑 bn mul add words函数由于openssl版本较旧可能不适应新编译器更换了最近的openssl实现进行试验问题仍然存在 Windows Server 2012 R2.
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The web page rock3.info was created on September 27, 2013. As of today, it is five hundred and fifty-five weeks, twenty-two days, eleven hours, and forty-nine minutes young.
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Rock3的Linux博客 just a tech blogDESCRIPTION
Just a tech blog. 环境 CentOS 6.4 x86 64 with gcc 4.4.7 glibc 2.12. 现象 32位CFLAGS -m32的ECC测试程序能够正确的执行64位 CFLAGS -m64 的ECC测试程序卡住不返回经过简单调试发现其卡在一个椭圆曲线点乘函数EC POINT mul里没有返回 通常的思路就是从具体的出错点开始分析也就是 EC POINT mul函数 经过在代码中添加打印例如 printfsd n, func , LINE ;. 发现32位测试中 EC POINT mul中. 此时想到性能问题可以使用oprofile和perf进行分析运行了一下perf records pref report,发现一个奇特现象 64位程序99的时间片都在执行一个函数 bn mul add words 期间考虑 bn mul add words函数由于openssl版本较旧可能不适应新编译器更换了最近的openssl实现进行试验问题仍然存在 Windows Server 2012 R2.PARSED CONTENT
The web page rock3.info states the following, "4 x86 64 with gcc 4." I saw that the website also stated " 现象 32位CFLAGS -m32的ECC测试程序能够正确的执行64位 CFLAGS -m64 的ECC测试程序卡住不返回经过简单调试发现其卡在一个椭圆曲线点乘函数EC POINT mul里没有返回 通常的思路就是从具体的出错点开始分析也就是 EC POINT mul函数 经过在代码中添加打印例如 printfsd n, func , LINE ;." They also said " 此时想到性能问题可以使用oprofile和perf进行分析运行了一下perf records pref report,发现一个奇特现象 64位程序99的时间片都在执行一个函数 bn mul add words 期间考虑 bn mul add words函数由于openssl版本较旧可能不适应新编译器更换了最近的openssl实现进行试验问题仍然存在 Windows Server 2012 R2."ANALYZE SUBSEQUENT WEBSITES
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