Stefan Ring via cfarm-users <[email protected]> writes:
> somehow this system is dog slow when compiling C/C++. I’ve never been
> very good at reading Darwin’s diagnostic output, but it seems like
> there is a crazy amount of swapping going on, and the fseventsd
> process is hogging two thirds of the memory. Every process that wants
> to do something is in state "stuck", i.e., waiting for disk. The
> system reads and writes around 3 TB from/to disk every day. This is
> insane!
On my own Mac minis, fseventsd occasionally gets stuck in some kind of
loop and starts consuming ~100% of one core (per "top") as well as
plenty of I/O. Rebooting fixes it, for awhile. This seems to be less
probable on Apple Silicon hardware, or maybe just less probable on
newer OS versions, but I have seen it recently even on an M4 + Tahoe
machine.
> Maybe switching off Spotlight would make it better.
"sudo mdutil -a -i off" FTW. It won't fix this fseventsd problem
though.
regards, tom lane
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