I forget how long it's been running, but mine reports 947.99GB written! Holy cow!

Yeah! Mine is 910GB and I only have a 256GB SSD. I guess that speaks to my uptime.

You can run `uptime` on both OS X and Linux to see how long a machine has been running.

The relevant figure here would be how long Spotify had been running, wouldn't it?

There's probably some way to get that info too, but of course I killed the app as soon as I saw what was going on, so it's too late!

Edit: uptime does give it a firm upper bound, at least. My current uptime is a bit over 12 days. So that's an average of 80GB/day at least, more if I started Spotify sometime after boot.

Can do it with

ps aux | grep ' /Applications/Spotify.app/Contents/MacOS/Spotify$' | awk '{print $9}'

Right you are. I'll keep that in mind for next time, thanks.

Vote this issue up if you have an account! https://community.spotify.com/t5/Ongoing-Issues/Major-I-O-wr...

I tried, but instead it told me I couldn't, and there's this message:

"We've seen some questions in our Community around the amount of written data using the Spotify client on desktop. These have been reviewed and any potential concerns have now been addressed in version 1.0.42, currently rolling out to all users."

So... sounds like it's fixed? If so, good job on making a fuss, everybody!