bug#33194: 26.1; Auto-revert mode causes emacs to use 100% cpu whenever a file is being written to in the home directory

[Michael Albinus]

Justin Van Winkle <justin.vanwinkle@gmail.com> writes:

Hi Justin,

> I checked out and installed from master (at
> 294a5246b264441d436612d4de0dd89fad130aa3).
>
> I still see 100% cpu usage in emacs.
>
> What I did:
>
> In one terminal I run 'emacs' from my home directory, and I don't open
> any files.
> In another terminal, again while in the home directory, I run 'cat
> /dev/zero > zed'.
>
> Emacs cpu usage spikes to 100%.

I've tried to reproduce the problem with the recent Emacs build. I let
cat run for about 6 min; emacs' cpu usage didn't exceed 15% during that
time. The zed file results in

# ls -l zed
-rw-r--r-- 1 albinus albinus 11726983168 Nov  5 22:12 zed

So I cannot confirm your observation, sorry.

Could you pls show exactly your recipe, starting with "emacs -Q"?

> - Justin

Best regards, Michael.