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What is wrong with (H)Sierra task switching?

Sciuriware

Sciuriware

macrumors 6502a
Original poster
Jan 4, 2014
779
166
Gelderland
Hello, I've been waiting so long for the problem(s) to be solved by APPLE, but still .....

(High)Sierra is bad at task switching: programs 'freeze' for some time, with or without
the corresponding busy cursor or 'ball', until you fiddle with some other programs.
Then suddenly it comes back to life again. I noticed that programs involved are:
- all (!) macOS components,
- third party programs (Mozilla stuff, VLC, LibreOffice, CrossOver, SuperDuper!, Vim ...),
- my own applications written in JAVA-10.
Furthermore: the 'hangs' seem to happen between members of above groups, which means
that none of these programs can be proved to be the single cause. It certainly is an OS problem.

Having worked in the past with 6- and 16-cpu systems that had similar problems,
I suspect the thread-to-core run-time distribution part of the kernel.
;JOOP!
 
Sciuriware said:
Hello, I've been waiting so long for the problem(s) to be solved by APPLE, but still .....

(High)Sierra is bad at task switching: programs 'freeze' for some time, with or without
the corresponding busy cursor or 'ball', until you fiddle with some other programs.
Then suddenly it comes back to life again. I noticed that programs involved are:
- all (!) macOS components,
- third party programs (Mozilla stuff, VLC, LibreOffice, CrossOver, SuperDuper!, Vim ...),
- my own applications written in JAVA-10.
Furthermore: the 'hangs' seem to happen between members of above groups, which means
that none of these programs can be proved to be the single cause. It certainly is an OS problem.

Having worked in the past with 6- and 16-cpu systems that had similar problems,
I suspect the thread-to-core run-time distribution part of the kernel.
;JOOP!
Click to expand...
This isn't a problem I see with any of the systems I own, use, or manage.
 
Does this happen on all of your Macs? Sounds more like a hardware issue but unlikely to be affecting all of them.
!POOJ;
 
keysofanxiety said:
Does this happen on all of your Macs? Sounds more like a hardware issue but unlikely to be affecting all of them.
!POOJ;
Click to expand...
It seems that since the latest update (10.13.6) the problem has grown;
even time machine and Trash may hang for some time until you start a random activity on any utility or program.
;JOOP!
 
Sciuriware said:
Followed instructions: The application “SMART Utility.app” can’t be opened.
So sorry.

Btw.: the problem is in my opinion NOT related to disk access.
I got 32Gb mem and sucked all files that I use into cache b.m.o. scripts.
;JOOP!
Click to expand...

Right click and press open.

SMART Utility just checks the SMART data of the HDD. Unlikely that you’ve got two dud hard drives but equally it’s very unlikely to get two machines running an OS so poorly unless it was restored from a duff TM backup or something.
 
keysofanxiety said:
Right click and press open.

SMART Utility just checks the SMART data of the HDD. Unlikely that you’ve got two dud hard drives but equally it’s very unlikely to get two machines running an OS so poorly unless it was restored from a duff TM backup or something.
Click to expand...
3 machines!
;JOOP!
[doublepost=1533109554][/doublepost]
keysofanxiety said:
Can you run & screenshot SMART Utility on both Macs please: https://cloudfront.volitans-software.com/smartutility324.zip

Assuming they're not pure SSDs (Fusion drives or HDDs).
Click to expand...
Here you are; R's picture is bigger because of the retina screen.
Screen Shot SMART Utility on system M.png
Screen Shot SMART Utility on system R.png


;JOOP!
 
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