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I'm using Vim 8.1 from homebrew on MacOs 10.14.6. Whenever I exit vim back to the terminal, the first keypress in the terminal afterward results in a beachball and CPU spike to 100%, with terminal listed as "not responding" in Activity Monitor. The spike lasts for 5 to 25 seconds, then the terminal is fine until the next time I exit vim. vim is the only thing that seems to be causing this, so far. This behavior is recent -- this same configuration had been working fine before -- although I have updated vim from homebrew in an attempt to fix the problem.

I'm wondering if there's a network issue somewhere (I'm behind a corporate firewall where the admins change the rules occasionally), or some other interaction betweeen vim and terminal that I'm not accounting for.

  • Why would there be networking between vim and the terminal? Have you tried using any of the profile/debug options to get a look at where the time spike is happening? How are you running/using/quitting vim in this process? Data is the key to solving any performance mystery. – D. Ben Knoble Sep 17 at 18:26
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    does this still happen if you disable your vimrc? vim --clean (others)? – Lie Ryan Sep 18 at 0:47
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    What is the terminal displaying before and during the hang? If you run Vim with the command vim && echo hi does the hi display immediately after quitting Vim, or does that also cause the hang? – Rich Sep 18 at 8:36
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    Behavior remains with vim --clean. – Andrew Barnett Sep 18 at 16:46
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    Behavior seems to affect only a single terminal window at a time -- if I open another terminal, the other doesn't have the same problem. – Andrew Barnett Sep 18 at 16:51

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