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If these tools show that your CPU is spending most of its time in user space and the idle cycles are dwindling, it is time to look at what to do next.

如果这些工具显示CPU把大多数时间花费在用户空间，空闲周期非常少，就应该考虑采取措施。

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The columns to observe are "us," "sy," and "id," which denotes CPU utilization time in user space, system space, and system idle time in percentage.

请注意“us”、“sy”和“id”列，它们分别表示用户空间和系统空间的CPU利用率百分比以及系统空闲时间。

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Nearly 5m people in 226 countries have downloaded a screensaver that makes their computer available, whenever it is sitting idle, to process radio signals gathered from outer space.

ECONOMIST: The future of computing

He said life in space was extremely busy, with no spare time to be idle.

BBC: Chris Hadfield: 'Space was too good not to share it'

Started in late 1998, the space-alien hunt has recruited the owners of 2.5 million PCs, tapping their machines' idle processing time to search small chunks of radio telescope data for patterns that might signal intelligent life elsewhere in the cosmos.

FORBES: Sharing Power