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Bug
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Resolution: Unresolved
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Minor
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None
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rhel-10.2
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None
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None
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None
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rhel-virt-confidential-firmware
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None
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False
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False
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None
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None
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None
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None
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Unspecified
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Unspecified
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Unspecified
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x86_64
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None
What were you trying to do that didn't work?
VM boot
What is the impact of this issue to you?
It takes long time to boot
Please provide the package NVR for which the bug is seen:
edk2-ovmf-20251114-2.el10.noarch
qemu-kvm-10.1.0-12.el10.x86_64
libvirt-11.10.0-3.el10.x86_64
kernel-6.12.0-191.el10.x86_64
How reproducible is this bug?:
5%
Steps to reproduce
- Start a domain
- Get the boot time from domain start to the VM guest-agent-service start(VM OS booted)
- Repeat that for 100 times
- Draw the box plot and scatter plot for the data of boot time
I finish the step4 by Gemini:
prompt: Make the box plot and scatter plot for the data in txt file. Calculate the Mean and SD for the data. Data: boot-time.txt
Based on the data provided in boot-time.txt, I have calculated the statistical measures and generated the requested visualizations.
Statistical Summary
- Mean: 43.21
- Standard Deviation (SD): 18.61
- Sample Size: 100
- Minimum Value: 38.0
- Maximum Value: 163.0
Visualizations
- Box Plot: This plot displays the distribution of the boot times. You can observe the central tendency and the presence of several high-value outliers (up to $163.0$) that pull the mean upward.
- Scatter Plot: This plot shows the individual data points in sequence. The red dashed line represents the mean value ($43.21$). It clearly highlights how most boot times are clustered around $39$–$40$ seconds, with occasional spikes.
(The generated plots are displayed above.)
As it says, the most boot time values are in the range 38~40. There are 5 very high values boot-time. And the SD for the data is too high.
From the VM screenshots, I find that it takes the extra time at the OVMF stage (With TainoCore logo)
The reproducing script, the logs for boot time and OVMF log: OVMF.tgz
Expected results
No very high boot time values and low SD.
Actual results
As above
