vmstat

We use the vmstat program for simple system status monitoring .

我们使用vmstat程序进行简单的系统状态监视。

The vmstat output does not provide information about computational file pages .

vmstat输出没有提供关于计算性文件分页的信息。

Let 's look at the more important fields to analyze in the vmstat output .

让我们看一看vmstat输出中要分析的更为重要的字段。

Let 's return to the vmstat output and what is wrong with your system .

让我们回到vmstat的输出，您的系统究竟出现了什么问题呢？

One can look at the context switching using either the vmstat or sar commands .

使用vmstat或sar命令可以查看上下文切换。

UNIX platforms use command line utilities like IOSTAT and VMSTAT .

UNIX平台则使用IOSTAT和VMSTAT这样的命令行实用工具。

The vmstat utility takes two parameters , time interval and count , both integers .

vmstat实用程序接收两个整数参数：timeinterval和count。

The following code sample shows the vmstat output as the test program kept on consuming memory .

下面是在测试程序不断消耗内存时vmstat的输出。

It 's important to make the distinction between this and what is reported back in vmstat .

重要的是，应该清楚这个结果与vmstat所报告的结果之间的差异。

All UNIX systems provide tools such as ps and vmstat to provide process and virtual memory statistics .

所有UNIX系统都提供了ps和vmstat之类的工具，通过它们提供进程和虚拟内存统计信息。

In contrast , vmstat reports information about non-computational versus computational pages .

与此相反，vmstat可以提供非计算性分页和计算性分页的对比信息。

With the output from vmstat , the primary thing to look at is the paging information .

在vmstat的输出中，要查看的主要内容是分页信息。

You should start with the old standby , vmstat .

您应该启动后备的命令vmstat。

Begin a2-second interval vmstat log on the test machine .

在测试机上开始一个两秒钟间隔的vmstat日志。

This vmstat report shows that there is approximately114MB of free memory .

vmstat报告表明，空闲内存大约为114MB。

For more information on the " si " and " so " columns , try man vmstat .

有关“si”和“so”的更多信息，请使用manvmstat获得。

I see topas as a graphical type of vmstat .

我将topas看作是vmstat的图形化版本。

If interval is specified , vmstat will summarize system activities over the last interval in seconds repeatedly .

如果指定了interval，vmstat将立即反复按照最新的间隔总结系统活动的概要信息。

If no parameters are specified , vmstat only lists previous statistics about the system and won 't refresh .

如果未指定任何参数，vmstat就只会列出系统的前一次统计数据，而且不会进行刷新。

The next section of code creates a pipe from the vmstat command , where the program will read data once per second .

代码的下一部分将通过vmstat命令创建一个管道，程序将在其中每秒读取一次数据。

We noted these figures in a spreadsheet , which we used later to analyze the vmstat logs .

我们在电子表格中记录了这些数字，这是我们随后用来分析vmstat日志的东西。

Vmstat reports back information about processes , memory , paging , blocked I / O , and overall CPU activity .

vmstat报告关于进程、内存、分页、被阻塞的I/O及总体CPU活动的信息。

Unlike vmstat or iostat , the defaults usually do not give you as much information as you probably would like .

与vmstat或iostat不同的是，这种方法的默认设置可能不会提供您想要的那么多信息。

If a count is given , vmstat will pull system statistics repeatedly until it reaches the number of count times specified .

如果给定了count，vmstat就会重复获取系统的统计数据，直到达到了所指定的count次数。

Netstat is really not a monitoring tool in the sense of vmstat and iostat .

相对于vmstat和iostat而言，netstat并不是一种真正的监视工具。

Time interval specifies the interval vmstat refreshes , and count specifies the maximum times it will refresh .

Timeinterval指定vmstat刷新的间隔，而count指定它将刷新的最大次数。

You need to understand this concept when trying to interpret the output of commands , such as vmstat and sar .

您需要理解这一概念，才能尝试解释vmstat和sar等命令的输出。

You should actually use vmstat to identify the cause of your bottleneck , even before you have determined that it might be memory related .

事实上，您应该使用vmstat来确定瓶颈的原因，即使在您尚未确定它是否与内存有关的时候。

Before changing this , make sure you run vmstat enough to determine that there really is a considerable amount of context switching going on .

在进行这种更改之前，请确保反复地运行vmstat以确定系统中确实正在进行大量的上下文切换工作。

I like to use this command for quickly troubleshooting an issue , especially when I want a little more than vmstat on my screen .

我常常使用这个命令快速地进行故障排除，特别是当我希望在屏幕上显示比vmstat更详细的内容时。