vllm - 💡(How to fix) Fix [Bug]: vllm main process cannot be canceled by interrupting it via the keyboard [1 comments, 2 participants]

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vllm-project/vllm#39854Fetched 2026-04-16 06:36:13
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Your current environment

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🐛 Describe the bug

I'm using a version of vllm main + vllm-ascend. I'm starting the model service using vllm serve ..., but I'm finding that I can't cancel the process by interrupting it with a keyboard shortcut. I'd like to know if this was intentional, or if there's some other special usage.

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extent analysis

TL;DR

The issue might be due to the way the vllm serve command handles interrupts, and a potential workaround could be to use a different method to stop the process.

Guidance

  • Check the documentation for vllm serve to see if there are any specific instructions for stopping the process.
  • Try using a different method to stop the process, such as using a process manager or the kill command.
  • Investigate if there are any configuration options or flags that can be passed to vllm serve to enable interrupt handling.
  • Verify if this behavior is specific to the version of vllm being used, and if upgrading to a newer version resolves the issue.

Notes

The issue lacks information about the specific version of vllm being used, which might be relevant in determining the cause of the problem.

Recommendation

Apply workaround: The user can try using a different method to stop the process, such as using a process manager or the kill command, as a temporary solution until the root cause is determined.

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