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No.98 - 众核场景下OS基础设施机制线性度探索

暑期2020
待办的
吴旭  Opened this issue

标题 No.98 - 众核场景下OS基础设施机制线性度探索

描述
SMP多处理器架构的发展,核数的线性增长是多核性能提升的非充要条件。经过测试证明,在鲲鹏场景下随着核数增加,性能甚至会出现下降,例如当core增长到128->256 core时,性能下降明显,其中的关键瓶颈在于glibc提供的锁机制在众核竞争场景下性能劣化验证。解决该问题的一个方法是,拆锁减小临界区。但是有大量应用,例如mysql等代码规模大,历史时间长,面向处理器重构编程不太现实;

提出一种新的方案或者优化机制,在上层应用无感知的情况下,屏蔽众核硬件差异,提供最佳的共享资源竞争策略

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  • 吴旭
  • 李清清

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5329419 openeuler ci bot 1578984659 5474000 wuxu wu 1578987273 23249 genedna 1586065964 total 4 participants

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5329419 openeuler ci bot 1578984659
openeuler-ci-bot 2020-05-28 11:26 owner

Hey @吴旭 , Welcome to openEuler Community.
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