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sources/tech/20190905 How to Get Average CPU and Memory Usage from SAR Reports Using the Bash Script.md → translated/tech/20190905 How to Get Average CPU and Memory Usage from SAR Reports Using the Bash Script.md
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@ -7,36 +7,37 @@
[#]: via: (https://www.2daygeek.com/linux-get-average-cpu-memory-utilization-from-sar-data-report/)
[#]: author: (Magesh Maruthamuthu https://www.2daygeek.com/author/magesh/)
How to Get Average CPU and Memory Usage from SAR Reports Using the Bash Script
如何使用 Bash 脚本从 SAR 报告中获取 CPU 和内存的平均使用情况
======
Most Linux administrator monitor system performance with **[SAR report][1]** because it collect performance data for a week.
大多数 Linux 管理员使用 **[SAR 报告][1]**监控系统性能，因为它会收集一周的性能数据。
But you can easily extend this to four weeks by making changes to the “/etc/sysconfig/sysstat” file.
Also, this period can be extended beyond one month. If the value exceeds 28, the log files are placed in multiple directories, one for each month.
但是，你可以通过更改 “/etc/sysconfig/sysstat” 文件轻松地将其延长到四周。
To extend the coverage period to 28 days, make the following change to the “/etc/sysconfig/sysstat” file.
同样，这段时间可以延长一个月以上。如果超过 28，那么日志文件将放在多个目录中，每月一个。
Edit the sysstat file and change HISTORY=7 to HISTORY=28.
要将覆盖期延长至 28 天，请对 “/etc/sysconfig/sysstat” 文件做以下更改。
In this article we have added three bash scripts that will help you to easily view each data file averages in one place.
编辑 sysstat 文件并将 HISTORY=7 更改为 HISTORY=28.。
We have added many useful shell scripts in the past. If you want to check out that collection, go to the link below.
在本文中，我们添加了三个 bash 脚本，它们可以帮助你在一个地方轻松查看每个数据文件的平均值。
* **[How to automate daily operations using shell script][2]**
我们过去加过许多有用的 shell 脚本。如果你想查看它们，请进入下面的链接。
* **[如何使用 shell 脚本自动化日常操作][2]**
These scripts are simple and straightforward. For testing purposes, we have included only two performance metrics, namely CPU and memory.
这些脚本简单明了。出于测试目的，我们仅包括两个性能指标，即 CPU 和内存。
You can modify other performance metrics in the script to suit your needs.
你可以修改脚本中的其他性能指标以满足你的需求。
### Script-1: Bash Script to Get Average CPU Utilization from SAR Reports
### 脚本 1：从 SAR 报告中获取平均 CPU 利用率的 Bash 脚本
This bash script collects the CPU average from each data file and display it on one page.
该 bash 脚本从每个数据文件中收集 CPU 平均值并将其显示在一个页面上。
Since this is a month end, it shows 28 days data for August 2019.
由于是月末，它显示了 2019 年 8 月的 28 天数据。
```
# vi /opt/scripts/sar-cpu-avg.sh
@ -62,7 +63,7 @@ done
echo "+----------------------------------------------------------------------------------+"
```
Once you run the script, you will get an output like the one below.
运行脚本后，你将看到如下输出。
```
# sh /opt/scripts/sar-cpu-avg.sh
@ -88,11 +89,11 @@ Once you run the script, you will get an output like the one below.
+----------------------------------------------------------------------------------+
```
### Script-2: Bash Script to Get Average Memory Utilization from SAR Reports
### 脚本 2：从 SAR 报告中获取平均内存利用率的 Bash 脚本
This bash script will collect memory averages from each data file and display it on one page.
该 bash 脚本从每个数据文件中收集内存平均值并将其显示在一个页面上。
Since this is a month end, it shows 28 days data for August 2019.
由于是月末，它显示了 2019 年 8 月的 28 天数据。
```
# vi /opt/scripts/sar-memory-avg.sh
@ -118,7 +119,7 @@ done
echo "+-------------------------------------------------------------------------------------------------------------------+"
```
Once you run the script, you will get an output like the one below.
运行脚本后，你将看到如下输出。
```
# sh /opt/scripts/sar-memory-avg.sh
@ -144,11 +145,11 @@ Once you run the script, you will get an output like the one below.
+-------------------------------------------------------------------------------------------------------------------+
```
### Script-3: Bash Script to Get Average CPU & Memory Utilization from SAR Reports
### 脚本 3：从 SAR 报告中获取 CPU 和内存平均利用率的 Bash 脚本
This bash script collects the CPU & memory averages from each data file and displays them on a page.
该 bash 脚本从每个数据文件中收集 CPU 和内存平均值并将其显示在一个页面上。
This bash script is slightly different compared to the above script. It shows the average of both (CPU & Memory) in one location, not the other data.
该脚本与上面相比稍微不同。它在同一位置同时显示两者（CPU 和内存）平均值，而不是其他数据。
```
# vi /opt/scripts/sar-cpu-mem-avg.sh
@ -172,7 +173,7 @@ do
done
```
Once you run the script, you will get an output like the one below.
运行脚本后，你将看到如下输出。
```
# sh /opt/scripts/sar-cpu-mem-avg.sh
@ -221,7 +222,7 @@ via: https://www.2daygeek.com/linux-get-average-cpu-memory-utilization-from-sar-
作者：[Magesh Maruthamuthu][a]
选题：[lujun9972][b]
译者：[译者ID](https://github.com/译者ID)
译者：[geekpi](https://github.com/geekpi)
校对：[校对者ID](https://github.com/校对者ID)
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