Anyone else notice high than normal CPU% usage for their mail client after installing High Sierra?
I was doing work on my MacBook, when I realized it was running hot; fans turned on.
Went to my activity monitor, and it indicated how "Mail" was hogging between 100% and 212% of my CPU, and all four threads. No other tasks seemed to be using more CPU than usual.
iMac (27-inch Mid 2011), macOS Sierra (10.12.3), 3.4Ghz Intel i7 32GB FCPX 10.3.2
Hi Diane,
Jumping in because I have the same problem - in my case the mail app consumes 3-500% CPU. And it *is* the mail app, not spotlight.
Also - mail client memory usage grows and grows until the system runs out of RAM and the client eventually crashes, which usually takes a day or two...
Hi Diane,
Jumping in because I have the same problem - in my case the mail app consumes 3-500% CPU. And it *is* the mail app, not spotlight.
Also - mail client memory usage grows and grows until the system runs out of RAM and the client eventually crashes, which usually takes a day or two...
This could be Spotlight indexing your messages. Open Activity Monitor in Applications/Utilities.
Select CPU.
Enter md in the search box top right
This will show mdworker that is used by Spotlight.
Do you see 0.0 or do you see activity?
If you see activity, then Spotlight is indexing your drive.
Same problem here, never had this before High Sierra. Tried to reset PRAM, VRAM and SMC controller, no luck. Any other suggestions?
High CPU% with mail client macOS High Sierra.
