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对于 Red Hat 平台，推荐设置的 SWAP 交换空间大小为多少？

Solution Verified - Updated 2016-05-20T18:00:42+00:00 -

Issue

如果给系统添加了几百个 GB 的内存, 需要设置对应几百个 GB 的 SWAP 交换空间吗？
在 Red Hat Enterprise Linux 5，Red Hat Enterprise Linux 6，Red Hat Enterprise Open Stack Platform 3 和 Red Hat Enterprise Open Stack Platform 4 上推荐设置的 SWAP 交换空间大小分别是多少？

Environment

Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 5
Red Hat Enterprise Open Stack Platform 3
Red Hat Enterprise Open Stack Platform 4

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