RRDtool is an open source, high performance data logging and graphing system for time series data.

RRDtool 是一个开放源码的高性能数据日志记录和绘图系统，用于处理时间系列数据。

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Cacti is a network graphing tool built around RRDTool.

Cacti是一个围绕RRDTool构建的网络绘图工具。

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We can say that many of these tools in turn make grand use of RRDtool in their implementation.

我们可以说这些工具的实现大多利用了RRDtool。

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