As discussed in system performance, monitor disk activity, CPU and memory usage to determine whether the disk subsystems, processing speed or paging are limiting performance.
如系统性能小节所述，监控磁盘活动、CPU和内存使用量可以确定磁盘子系统、处理速度或分页是否影响了性能。
Using the example of storage space, the embedded Informix instance could be configured to monitor disk usage and add more storage when any DBspace consumes 80 percent of its allocated space.
以存储空间为例，可以通过配置嵌入式Informix实例监视磁盘使用量，当任何DBspace消耗了分配给它的空间的80%时，自动地添加存储空间。
Part 3 of this series focuses on the application layer as you move on to file systems, using various commands to monitor and tune your file systems and disk I/O subsystems.
本系列文章的第 3 部分将在您继续研究文件系统的同时，重点关注于应用程序层，并使用各种命令以监视和优化您的文件系统和磁盘 I/O 子系统。
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