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Wu__Tsung-Hsiang
Beginner
108 Views

Disk I/O analysis issue on Intel Amplifier 2018 trial version

Now I try to follow the tutorial steps for analyzing disk I/O metrics https://software.intel.com/en-us/vtune-amplifier-disk-io-tutorial-linux

But on Analysis Type page it shows error message as below so that I cannot start collection process

"Ftrace collection is not possible due to a lack of credentials. Make sure you have read/write access to debugFS. You may either run the analysis with root privileges (recommended) or follow the configuration instructions provided in the Software Event Library help topic."

For read/write access to debugFS, I typed

$> mount | grep debugfs, and it showed

$> debugfs on /sys/kernel/debug type debugfs (rw, relatime), seems I have read/write access to it, right?

  • How to know I have root privileges ? I've been added to the group but same message popped up
  • where is the related configuration instruction as message mentioned above (Software Event Library help topic). Could you please share the link with me, thanks. 

 

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Duan__Genquan
Beginner
108 Views

Please run ample-gui as root. 

I encountered this problem at first, and can run well as root.

Good luck!

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