Re: Vim freezes with 100% cpu usage on exit

Thiago Padilha <tpadilha84@gmail.com> wrote:

> Sometimes when I reattach to the tmux session after the virtual machine
> has been frozen for a long time vim freezes right away without consuming 100% cpu,
...
> This is really annoying me, I was hoping someone could give me hints on how to debug this issue.


You could build vim with debug information (-g -O0). Then, when bug
happens & Vim uses 100% of the CPU, you can attach with gdb to the
Vim process that hogs the CPU, and look at the stack trace. That may
give useful information to debug it.

$ gdb
(gdb) attach pid
(gdb) bt

(where pid is he process ID of the Vim process using 100% of the CPU)

You can then continue with...

(gdb) c

... and press CTRL-C in gdb to stop vim and run bt again to see if you
get similar stack trace. You can repeat that a few times to get a feeling
of what Vim is doing.

Dominique

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