MP 1,1-5,1 Where Is The Bottleneck?

danallen

macrumors member
Original poster
Oct 8, 2018
50
20
Houston
1581653308224.png



Looking at the conditions, it is not hard to imagine a bottleneck forming somewhere. The part that puzzles me is I cannot find the bottleneck when looking at Activity Monitor. There seems to be plenty of memory and CPU capacity available for what is running I often have to wait 1 to 15 seconds after clicking on an app before the click takes effect.

Conditions creating a problem:
Running three instances of Debian as guest virtual machines under VMWare Fusion 10.
Running FireFox with 20 Open Tabs, with up to five of them on various youtube pages, running only one video at a time. Other videos stopped
Running Atom (app for editing programs)

Memory and Processor Allocations:

VM1
1581653487886.png


VM2
1581653520196.png


VM3
1581653600186.png




I am clicking on the text editor and having to wait a long time before it responds. While that is happening, I can click on Activity Monitor, open on another desktop/space. Here is the CPU load with a lot of files being copied among VMs and disks:

1581654996851.png



Memory Load
1581654211783.png



Disk Activityh
1581654648617.png




Network
1581654907231.png



System/Boot Disk (sandisk ssd)
1581655095003.png

- - Post merged: - -

Most Active VM Runs on this SSD
1581655231385.png


The other two VMs are for backups that run on cron schedule, stored on HDD
1581655295672.png


Do you have any ideas or guesses about what exactly makes my system hang for 10+ seconds when clicking on an app?

Any idea on how I can find out if the information needed to figure this out is not included in this post?

Any assistance you can provide will be very much appreciated and mean that you are awesome and my hero.

Thank you.
 

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Last edited:

MIKX

macrumors 68000
Dec 16, 2004
1,517
548
Aussie in Japan
Why do you need Catalina ? It is unfinished and not supported for your 2012 cMP.

Mojave 10.14.6 works perfectly.

PS : Not a good idea to post your cMP's serial number.
 

tsialex

macrumors 604
Jun 13, 2016
6,595
7,326
Brazil
View attachment 894060


Looking at the conditions, it is not hard to imagine a bottleneck forming somewhere. The part that puzzles me is I cannot find the bottleneck when looking at Activity Monitor. There seems to be plenty of memory and CPU capacity available for what is running I often have to wait 1 to 15 seconds after clicking on an app before the click takes effect.

Conditions creating a problem:
Running three instances of Debian as guest virtual machines under VMWare Fusion 10.
Running FireFox with 20 Open Tabs, with up to five of them on various youtube pages, running only one video at a time. Other videos stopped
Running Atom (app for editing programs)

Memory and Processor Allocations:

VM1
View attachment 894061

VM2
View attachment 894062

VM3
View attachment 894063



I am clicking on the text editor and having to wait a long time before it responds. While that is happening, I can click on Activity Monitor, open on another desktop/space. Here is the CPU load with a lot of files being copied among VMs and disks:

View attachment 894068


Memory Load
View attachment 894065


Disk Activityh
View attachment 894066



Network
View attachment 894067


System/Boot Disk (sandisk ssd)
View attachment 894069
- - Post merged: - -

Most Active VM Runs on this SSD
View attachment 894070

The other two VMs are for backups that run on cron schedule, stored on HDD
View attachment 894071

Do you have any ideas or guesses about what exactly makes my system hang for 10+ seconds when clicking on an app?

Any idea on how I can find out if the information needed to figure this out is not included in this post?

Any assistance you can provide will be very much appreciated and mean that you are awesome and my hero.

Thank you.
Your XP941 probably got the same TRIM firmware problem that causes constant slowdowns and is so common with SM951-AHCI. Samsung never resolved this stupid firmware problem and it's a constant headache as you fill up the SSD.

If your XP941 is bootable, boot single user and run fsck -fy /. If it's not, you have to empty it, erase it, install Mojave and then run fsck -fy /. After the forced full disk TRIM, the slowdowns will be over, at least for some time.
 
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defjam

macrumors 6502a
Sep 15, 2019
602
460
It's probably disk related. It appears there's a lot of disk activity (over 1TB written). Combine that with what alex mentioned and it's likely to be the culprit.