To improve the performance and lower the storage requirements of this routine, the estimation can be based on a subset of the data using extremely fast sampling on the page level.
为了改进性能并降低例程的存储要求，估算可使用页面级的极快速取样基于数据的一个子集。
FreeBSD has developed a reputation for being a fast, high-performance and extremely stable operating system, especially suitable for web serving and similar tasks.
FreeBSD开发作为一个快速，高性能和极其稳定的操作系统，尤其是适合网络服务器和类似任务。
Smart defrag 2 is such a FREE tool that provides extremely fast and efficient defragmentation to your hard drives intelligently for faster file loading and high disk performance.
智能磁盘整理2就是这样一个免费工具，提供更快的文件载入智能和高磁盘性能极其快速和有效的碎片整理您的硬盘驱动器。
Smart defrag 2 is such a FREE tool that provides extremely fast and efficient defragmentation to your hard drives intelligently for faster file loading and high disk performance.
智能磁盘整理2就是这样一个免费工具，提供更快的文件载入智能和高磁盘性能极其快速和有效的碎片整理您的硬盘驱动器。
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