... process heating ==> 程序加热 process I-O ==> 进程输入和输出 process identification (PID) ==> 进程标识,过程辨识 ...
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When a process waits for a block device data request to complete, it incurs I/O wait time, and all idle time becomes wait time.
当一个过程等待一个块设备数据请求完成时，它会增加 I/O 等待时间，而所有空闲都会变成等待时间。
This can cut the time required to process queries by as much as 20 percent because more data can be kept in memory, reducing the number of I/O operations to slower mechanical disk drives.
这导致处理查询所需的时间降低了 20%，因为可以在内存中保存更多数据，减少了对缓慢的机械磁盘驱动器的 I/O 操作次数。
The vmstat tool outputs thread/process information, memory/swap usage, page ins/outs, disk I/O, page faults, and CPU statistics.
vmstat 工具输出线程/进程信息、内存/交换区使用率、换进/换出页面、磁盘 I/O、页面错误和 CPU 统计信息。
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