Can't show complete info in flame graph.

[futurehome]

Describe the bug
The first time I use hotspot, I got the flamegraph as expected as below.

Lator on, with the same code, and same run time, same setting, I can only get flamegraph like below, there are a lot of funcs missing, anything wrong?

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Version Info (please complete the following information):

• Linux Kernel version:
• perf version:
• hotspot version (appimage? selfcompiled?):
• if self-compiled hotspot, what version of elfutils:

Additional context
Add any other context about the problem here.

[lievenhey]

Which version are you using?

[milianw]

Export the data as a .perfparser file and give explicit steps needed to reproduce this