[MlMt] High Sierra, APFS, Time Machine, and MailMate...

Steven M. Bellovin smb at cs.columbia.edu
Mon Dec 11 07:34:15 EST 2017

On 11 Dec 2017, at 5:31, David Ledger wrote:

> Having read the other replies I would question Activity Monitor. AM is 
> an application built on top of the real data recording and it 
> wouldn’t surprise me in the least if Apple filter out any sort of 
> activity they think you shouldn’t be concerned with. Try using 
> ‘top’ in a terminal window. Unless Apple have doctored a long 
> standing utility that will tell you what is really going on. Running 
> ‘top’ without arguments, the header gives you:
> 	Load Average (which is the number of processes waiting for the CPU 
> averaged over 1, 5, and 15 minutes - an indication of overall load, 
> more useful for servers,
> 	CPU usage (and idle %age),
> 	Memory usage,
> 	Swap,
> 	Network traffic, and
> 	Disk I/O
> It updates every second (by default). The report below the header is 
> at a per-process level. It’s surprising how busy the system really 
> is.
> Hitting the ‘q’ key stops it. ’man top’ will tell you how to 
> control the rest of the o/p.
I know how to use 'top'.

I'll try that next time I get one of the stalls, but the real question 
for this list is why I'm getting these stalls.

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