使用平台工具检查磁盘活动速率。
磁盘活动可能源于交换，也可能源于应用程序或操作系统的请求。
Disk activity can be due to swapping, described earlier, or it can be due to requests from the application or operating system.
因为集群复制而增加的网络工作负载必须与增加的磁盘活动成比例。
The additional network workload will be proportional to the increase in disk activity due to cluster replication.
图11显示出了网络流通量、磁盘活动，和处理器活动之间的趋势。
Figure 11 illustrates the trend between the network traffic, disk activity, and processor activity.
缓存可以减少磁盘活动，这对于Web服务器等工作负载非常重要。
This saves disk activity, which can be important under some workloads such as Web servers.
如果缓冲池大到足以在内存中保存所需数据，就会发生较少磁盘活动。
If the buffer pool is large enough to keep the required data in memory, less disk activity will occur.
磁盘比内存慢得多，所以过多的磁盘活动是许多应用程序性能低下的原因。
Disk is slow compared to memory, so excessive disk activity is the downfall of many applications.
没有其他磁盘活动时，所有的智能阵列控制器作为后台作业执行曲面分析。
All Smart Array controllers perform a surface analysis as a background job when there is no other disk activity.
目前的大多数文档主要介绍如何修改内核参数及hdparm设置以减少不必要的磁盘活动。
Much of the current documentation focuses on modifying your kernel parameters and hdparm Settings to reduce unnecessary disk activity.
让硬盘停转并且降低CPU速度可以在CPU及磁盘活动低于设定阈值的任何时间范围内执行。
Spinning down the hard disk and setting a reduced CPU speed setting can be performed for any time range when the CPU and disk activity is below a set threshold.
除了前面提到的CPU资源方面的节省，我们可以看到消耗了更少的网络带宽和更频繁的总的磁盘活动。
In addition to the CPU savings mentioned before, we see less network bandwidth consumption and a higher total disk activity.
首先测量当前的磁盘活动，然后将典型用户与我们的测试中的工作负载进行对比，从而得出一个比例系数。
Measuring the current disk activity taking place will be the starting place in working out a scaling factor by comparing your typical user with the workloads in our tests.
除了前面提到的CPU资源方面的节省，我们可以看到消耗了几乎相同的网络带宽和稍显频繁的总的磁盘活动。
In addition to the CPU savings mentioned before, we see roughly equal network bandwidth consumption, and a slight increase in total disk activity.
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。
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.
在没有直接工作负载的备用服务器上，在500个用户的集群复制活动测试中，产生的CPU负载为8%，磁盘活动为35%。
Onthe standby server, which had no direct workload running against it, the cluster replication activity for the 500 user test created a CPU load of 8% and 35% disk activity.
可以通过专门的系统工具来监测磁盘活动，比如用于Windows系统的perfmon或用于Linux和UNIX系统的iostat。
Disk activity can be measured with system-specific tools, such as perfmon for Windows, iostat for Linux and UNIX systems.
可以通过专门的系统工具来监测磁盘活动，比如用于Windows系统的perfmon或用于Linux和UNIX系统的iostat。
Disk activity can be measured with system-specific tools, such as perfmon for Windows, iostat for Linux and UNIX systems.
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