ipython / ipython/ipykernel

New ipykernel has 55 threads.

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#407 コメント 3 件 リアクション 0 件 担当者 0 名 GitHub で見る
主要言語
Python
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マージ済み PR（30日）
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説明

Running the following:
```
threads=$(ps --no-headers H --pid 1094 | wc -l); echo "pid: 1094; threads: $threads"; ps --no-headers H --pid 1094;
```
Gives me this output:
```
pid: 1094; threads: 55
1094 ? Ssl 0:02 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
1094 ? Ssl 0:00 /home/jovyan/miniconda/bin/python -m ipykernel_launcher -f /home/jovyan/.local/share/jupyter/runtime/kernel-6628f1d1-8d60-4917-8726-51201bc21ff6.json
```
Why does an ipykernel have 55 threads doing nothing (except using ram)?

My version:
```
jovyan@5f1b73838096:~/work$ ipython --version
7.3.0
```

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