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Vkernel

Motivation

  • 针对容器的隔离性需求,深入研究容器环境下操作系统内核的作用和定位,以及操作系统内核功能的解耦方法
  • 根据容器运行环境的隔离特征,研究操作系统虚拟化的层次化隔离模型
  • 根据云平台的具体需求,研究隔离性与资源利用率之间的权衡方法,在保障隔离性的前提下提升资源利用率

Hierarchical Model

|-------------------------------------------
| ------------------                       |
| |  -------       |                       |
| |  | App |       |                       |
| |  -----------   |                       |
| |  | Vkernel |   |                       |
| |  -----------   |                       |
| |  Container     |                       |
| ------------------                       |
|------------------------------------------|
|   ----------    ----------------------   |
|   | Kernel |    | Cgroup | Namespace |   |
|   ----------    ----------------------   |
|------------------------------------------|
|               Hardware                   |
|------------------------------------------|

Subsystem

  • 资源视图
  • 硬资源分配管理
  • 软资源分配管理
  • 硬件特性支持

Code

Intercept Syscall

In-kernel UML LD_PRELOAD Modified-lib ptrace
Rapid Development * ** *** ** ***
Powerful Prototypes *** ** ** ** **
Modularity * * ** * ***
Design Transferability *** *** * * **
Runtime Compatibility *** * * * **
Performance *** * * + * + *

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