What is PMU in arm?

What is PMU in arm?

Using the ARM Performance Monitor Unit (PMU) Linux Driver. Jason Andrews. March 8, 2015. The Linux kernel provides an ARM PMU driver for counting events such as cycles, instructions, and cache metrics.

How do I turn on performance monitoring?

How to open Performance Monitor

  1. Open Start, do a search for Performance Monitor, and click the result.
  2. Use the Windows key + R keyboard shortcut to open the Run command, type perfmon, and click OK to open.

What is PMU in Linux?

Those events are typically provided by the hardware or the OS kernel. The most common hardware events are provided by the Performance Monitoring Unit (PMU) of modern processors. They can measure elapsed cycles or the number of cache misses. The term PMU is generalized to any event source, not just hardware sources.

Where can I find Performance Monitor?

To open the application, type “performance monitor” into the search box on the Windows 10 desktop and then select the correct result. Alternatively, you may use the direct approach and press Windows Key + R to open the run dialog box, type “perfmon” and then press the OK button.

What command line would you type to start Performance Monitor?

The first way you can start the tool and one that will work exactly as show below is by simply typing “perfmon” at a command prompt. Also available in almost all version is the “Run” command window. Using the Windows key + R keyboard shortcut will open the following window in which you can type “perfmon” and click OK.

How do I read Performance Monitor logs?

To view the Data Collector Set log file

  1. Start Windows Performance Monitor.
  2. In the navigation pane, expand Monitoring Tools, and then choose Performance Monitor.
  3. In the console pane toolbar, choose the View Log Data button.
  4. In the Data Source section, select Log files, and then choose the Add button.

What are PMU events?

Event Based Branches (EBBs) are a feature which allows the hardware to branch directly to a specified user space address when certain events occur. One type of event for which EBBs can be configured is PMU exceptions.

How do you start a performance?

Method 2: Open Performance Monitor via Run Press the Windows key + R keyboard shortcut to open the Run command, type perfmon and hit Enter.

How do I access system monitor?

Keyboard shortcut

  1. Go to System Settings.
  2. Click Keyboard.
  3. Open the Shortcuts tab.
  4. Click the “+” symbol near the bottom of the window.
  5. Give your command a title. E.g. System Monitor.
  6. In the Command field, enter gnome-system-monitor.
  7. Click Apply.
  8. Click Disabled on your newly created shortcut.

What is Performance Monitor scale?

Scale allows you to multiply the actual value by a factor of 10 so that it is easily readable. For example, if your values are all in the 10’s of 1000’s, they would exceed the highest line of the chart, so you could multiply them by . 01 or . 001.

How do you read a performance counter?

There are two main ways to read performance counters on a Windows system; through the Performance Monitor application or via command line (probably PowerShell). Let’s use the GUI first. To get to the Performance Monitor, run perfmon. msc from the command line or type Performance Counter in the search box.

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