总线速度是将信息以一个或多个源部件传送到一个或多个目的部件的一组传输线。
一旦检验总线速度，可以信赖的写定时器、串行I/O和其他时钟有关的程序。
Once you verify the bus speed, you can confidently write the timer, serial-I/O, and other clock-dependent routines.
在需要极端高吞吐量的环境，特别是千兆接口下，就必须考虑PCI总线速度了。
In environments where extremely high throughput through several interfaces is required, especially with gigabit interfaces, PCI bus speed must be taken into account.
本机传输速率超过SCSI总线速度的50%的驱动器必须在专用SCSI总线上，以避免降低性能。
Drives whose native transfer rate exceeds 50 percent of the SCSI bus speed must be on a dedicated SCSI bus to avoid loss in performance.
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