Slow Mac? It might be a hidden memory hog

“Just hours into using my new 27-inch iMac with 32GB of memory, the system felt sluggish,” Glenn Fleishman writes for Macworld.

“I checked memory usage via the top -u command in Terminal, which showed all 32GB was full,” Fleishman writes. “Exclamation point, I said aloud, and launched Activity Monitor to dig in more easily than at the command line.”

“Sure enough, all memory was in use, and the culprit was something I’d never seen before:,” Fleishman writes. “For some (like me), this service goes out of control and consumes all available memory… Fortunately, you can at least halt the runaway train…”

Read more in the full article here.

MacDailyNews Take: Activity Monitor is also nice for seeing how much memory your various Safari tabs are consuming. It’s especially nice for those of us with 20+ tabs open at all times.


  1. This is really a major-serious problem for Apple that apparently has been going on for years.

    I am a recent convert to MacOS and I must say that this is Apple’s dirty little secret. No one tells you about the memory problems until after you’ve bought the damn machine. I’ve come up with some solutions like Dr. Cleaner Elite, but really, that ain’t a real solution, its a bandaid.

    I’m sort of shocked that Apple has not addressed this. Really lame, even for 8GB of RAM. I will never go light again…

  2. Thanks for the tip MDN never knew what a memory hog this site was till now. 234.0 MB 0 bytes 34 333 11469 stephej 6.8 10.07 No 0 bytes 0 bytes 0 bytes 64 bit No Yes No 0 bytes 0 bytes 0 0 – 0 bytes 0 bytes 0 bytes No Yes 98.0 MB 0 bytes 23 265 11464 stephej 0.0 1.53 No 0 bytes 0 bytes 0 bytes 64 bit No Yes No 0 bytes 0 bytes 0 0 – 0 bytes 0 bytes 0 bytes No Yes

  3. memory management has always been a pain on the mac.. they’ve never got it right. yet.

    used to write applescripts for artists to manually flush out the memory that was being held back from use.. you know.. just in case that app you closed 2 hours ago needs to launch again.

      1. RamDoubler!! Whoa, my ancient memory came back. Back in the days when Mac was memory starving little machine, RamDoubler was a God send. But after Apple have gradually polished up its memory management scheme, I thought RamDoubler was gone. Then, I Googled now, and yes, it’s still available, even with familiar box design. I never thought virtual memory stuff was useful again, but I have to check it out. In the meantime, occasional restarting…..

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