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在仍然具有可以被回收的页缓存时，过早地进行了交换操作

Solution In Progress - Updated -

Issue

  • 在仍然存在可用内存，或甚至可用内存作为可回收的缓存页时，存在高交换空间使用率的情况
  • 在将 RHEL 7 升级到 RHEL 8 后，发现交换空间使用率比以前要高
  • 即使降低了 /proc/sys/vm/swappiness 值，交换使用率仍然很高

Environment

  • Red Hat Enterprise Linux 8

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