Hot answers tagged memory
The command line option -o (o standing for "Override-sort-field") also works on my Xubuntu machine and according to the Mac man page of top it shoult work on a Macintosh too. If I want to short by memory usage I usually use top -o %MEM which shorts by the column %MEM. But I can use VIRT, RES or SHR too. On a Macintosh I would probably use mem or vsize. I ...
Since kernel 2.4 there is no difference between these cache types, there is only the page cache left.
If a process is doing a lot of memory IO, then that will translate into using a lot of cpu time, so the scheduler will account for it, indirectly.
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