摘要
本文主要讨论在Linux系统内核在页回收时出现cpu load瞬间飙高的问题,主要表现为Linux系统响应慢,我们从内核的角度分析了导致该问题的几种可能情况。我们可以借助提高watermark low可以尽早的唤醒kswapd,然后kswapd来做background reclaim。Linux内核提供了各种各样的机制,我们根据具体的使用场景来选择使用合适的策略。从而实现系统性能的提升。
This article main discussion in Linux kernel CPU load instantly soared during pp recycling problems, main show is Linux system response is slow, we analyzed the cause of the problem from the Angle of the kernel several possible situation. We can help improve the watermark low can awaken kswapd as soon as possible, then kswapd to do background reclaim. The Linux kernel provides a variety of mechanisms, we according to the specific usage scenarios to choose to use the right strategy. So as to realize the system performance improvement.
出处
《数字技术与应用》
2016年第12期252-252,共1页
Digital Technology & Application
