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No.98 - 众核场景下OS基础设施机制线性度探索

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开源之夏2023
Opened this issue  
2020-05-28 11:26

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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导师

  • 吴旭
  • 李清清

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吴旭 created任务
吴旭 set related repository to openEuler/marketing
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Hey @吴旭, Welcome to openEuler Community.
All of the projects in openEuler Community are maintained by @openeuler-ci-bot.
That means the developers can comment below every pull request or issue to trigger Bot Commands.
Please follow instructions at https://gitee.com/openeuler/community/blob/master/en/sig-infrastructure/command.md to find the details.

genedna assigned collaborator allesgute
genedna assigned collaborator genedna
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genedna set related project to Summer 2020
genedna set deadline to 2020-07-02
genedna set start time to 2020-07-01
genedna changed deadline from 2020-07-02 to 2020-09-30
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genedna changed description
genedna changed issue type from 任务 to 暑期2020
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summer2020
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yanzh_h changed deadline from 2020-07-02 to
yanzh_h changed start time from 2020-07-01 to
yanzh_h set deadline to 2020-09-30
yanzh_h set start time to 2020-07-01
吴旭 changed assignee from allesgute to 吴旭
吴旭 unassigned collaborator genedna
吴旭 changed issue state from 待办的 to 已拒绝

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