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Paired gang scheduling

机译:配对帮派调度

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摘要

Conventional gang scheduling has the disadvantage that when processes perform I/O or blocking communication, their processors remain idle because alternative processes cannot be run independently of their own gangs. To alleviate this problem, we suggest a slight relaxation of this rule: match gangs that make heavy use of the CPU with gangs that make light use of the CPU (presumably due to I/O or communication activity), and schedule such pairs together, allowing the local scheduler on each node to select either of the two processes at any instant. As I/O-intensive gangs make light use of the CPU, this only causes a minor degradation in the service to compute-bound jobs. This degradation is more than offset by the overall improvement in system performance due to the better utilization of the resources.
机译:传统的组调度有一个缺点,即当进程执行I / O或阻塞通信时,它们的处理器保持空闲状态,因为替代进程无法独立于其自己的组运行。为缓解此问题,我们建议对此规则稍作放松:将大量使用CPU的帮派与少量使用CPU的帮派(可能是由于I / O或通信活动)进行匹配,并将这些对安排在一起,允许每个节点上的本地调度程序随时选择两个进程之一。由于I / O密集型组仅占用CPU少量资源,因此只会对计算绑定作业的服务造成较小的影响。由于对资源的更好利用,系统性能的整体改善大大抵消了这种降级。

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