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Knowledge Base

Exporting esxtop performance data as a CSV file and manipulating it from the command-line (1004953)

Last Updated: 7/7/2020Categories: How toTotal Views: 49024Language:
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Details

esxtop is a command line tool for viewing real-time performance data. It is easier to review this data in a graph or look at data in larger chunks.

Solution

The esxtop utility available in ESX/ESXi 3.x and later versions supports the redirection of its output to a CSV formatted file. This file can be read by Microsoft Windows Performance Monitor (perfmon.exe).

To redirect the output to a file, you must use the esxtop command. For example:

#esxtop > /tmp/perf.csv

If you have connected to ESX/ESXi using vMA, you must use the resxtop command. For example:

# resxtop > /tmp/perf.csv

This command creates a properly formatted CSV file with all the esxtop data. This redirection works with esxtop, usually, in batch mode and also when replaying snapshots from a vm-support.

Note: The ESX/ESXi host does not provide all the commands you need for this procedure. You must upload/transfer the .csv file to any Linux machine.

The esxtop utility creates huge amount of data. Some hosts have reported up to 120,000 columns.

To pull out specific columns of data, run the below command on the Linux machine:

# cat filename | cut -d "," -f 1,`head -1 filename | tr "," "\12" | egrep -n "regex" | cut -d ":" -f 1 | tr "\12" "," | sed "s/,$//"` | head

Where filename is the filename of the CSV data and regex is a regular expression that matches your column names.

To get a complete list of all column names, run this command:

#head -1 filename | tr "," "\12" | less

Note: This list may have thousands of lines.

For example, if you have a CSV file named test.csv :

# cat test.csv | cut -d "," -f 1,`head -1 test.csv | tr "," "\12" | egrep -n "Machine MBytes" | cut -d ":" -f 1 | tr "\12" ","`

"(PDH-CSV 4.0) (EDT)(0)","\\host\\Memory\MachineMBytes"
"04/17/2008 14:23:07","2047"

"04/17/2008 14:23:12","2047"
"04/17/2008 14:23:17","2047"
"04/17/2008 14:23:22","2047"
"04/17/2008 14:23:27","2047"

Note: For a list of available counters, look at the top of the CSV file that was generated. The list may vary for different versions of ESX/ESXi.

For related information on using esxtop for troubleshooting performance issues, see:

Using esxtop to identify storage performance issues for ESX / ESXi (multiple versions) (1008205)

Troubleshooting ESX/ESXi virtual machine performance issues (2001003)

VMware Support Insider Blog- Using VisualEsxtop to troubleshoot performance issues in vSphere

Additional Information

For translated versions of this article, see:

日本語: コマンドラインで esxtop パフォーマンス データを CSV ファイルとしてエクスポートして操作する (2097572)

简体中文: 将 esxtop 性能数据导出为 CSV 文件并通过命令行对其进行操作 (2111748)

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