. . . Where/how in Activity Monitor can this be seen? I can't find any option for disk use, only disk activity. . . .
In 10.12.6 (Love It!) in Disk Util I clicked on "Disk" in the upper button row in the app, set sort to "Bytes Written" Descending Order (that's clicking on the title so that the arrow is pointing down) and the column put the Process of Tech Tool Pro writing, since it was constantly and the largest, at the top. Over in the far left column shows the name of the process, which was Tech Tool Pro. I selected that line and then click on the "i" in a circle button, got the info window, clicked on "Open Files and Ports" and you get various amounts of code that in it had the path of the folder that was being written to in the Application Support directory which told me that was it, i.e.,
/Users/(UserName)/Library/Application Support/Tech Tool Pro (might have something more)/(Current File being written named with Date and Time Stamp). So a long time ago I learned to have an "alias" of the "User Library Folder" in the side bar so I don't have to dig for this folder every time I need to get to it. So I click on that got the interior list of files and folders, go to "Application Support", you can set column sorting to "Date Added", which doesn't work for me, or Size, look for Tech Tool Pro and there it was in it's 43GB glory. At the time I deleted all but the latest Back Up. Then when I was able to redirect where the files were saved and created a folder on an archive drive named: "TTP Directory BU" and had the files written there. But it got so out of hand. I just killed the process and tossed all the files. And I thought TimeMachine was bad.
. . . But back to the MacOS 10.12 planned upgrade -I've only superficially tested it (to make sure some legacy apps still work before upgrading), so how does it compare to 10.11 performance-wise? Any features I'll lose or drastic changes which aren't obvious at first that I should know about before I fully commit?
High Sierra was meant to "Help" tweaking the OS to run and getting everyone ready to move into a completely 64bit environment. But for some reason many reviewers noted after Mojavé, which did the 64bit transition thing, that they didn't know why they bothered with HS. I agree, it's icky. But I have all the way up to Catalina that I can boot to and play in. And for the first time I did do a "Previous System Migration" after the install, but during the initial set up. I have found that using/doing "Migration Assistant" after the fact does not do as complete of job as during the initial setup. Plus, after the fact it creates another User that is a pain to have to deal with. During Setup it moves everything into the main use. That is if you want the "Main User" to be a Root user.
But I landed on and love 10.12(.6) which is fully 32bit compatible and it's been perfect. And I know it's no longer supported by Apple. For the most part. But 99% of the updates they send out do more damage than fixing things. So . . . I'm running Office 2011 which is 32bit along side a ton of 64bit apps, which you'll see in the Activity Monitor under "Kind". I had to update from 2008, which was wonderful, to 2011, junk, to rejigger and clean up the centuries old database that I have had problems with a couple of times over the years and couldn't afford of lose it. ALTHOUGH, I do have several, many many, copies stored on as many lose drives.
FEDEX says my drives will be here today. So CCC is going to get a major workout over the next couple of days. But I have to wait until after I relocate a sprinkler.