Disable Dictation to get 1GB RAM back

Discussion in 'OS X Mavericks (10.9)' started by nutmac, Nov 13, 2013.

  1. nutmac macrumors 68040

    Mar 30, 2004
    Even though my rMBP has 16GB RAM, it frequently taps in to swap memory. So I started cracking down on apps and processes running the background. One oddity was "com.apple.speech.recognition" eating up nearly 1GB of physical memory (even after a reboot).

    So I turned it off completely by going to "System Preferences | Dictation & Speech | Dictation -> Off & Shortcut -> Off".

    Voila, I got 1GB RAM back.
  2. Partron22 macrumors 68020


    Apr 13, 2011
    I got 995.9 MB back on my Mac, after a restart. That's with "Enhanced Dictation" initially turned on.
    There doesn't seem to be any discernible memory footprint at all when dictating with "Enhanced Dictation" turned off.

    Perhaps Apple'l fix this hoggishness when they come out w "Enhanced Dictation" 1.0.1.
  3. Mac.User macrumors 6502

    Aug 25, 2013
  4. peoplevoice macrumors member

    Aug 19, 2008
    The process is not running in my computer and I have Enhanced Dictation ON for English and Spanish.
  5. divincem macrumors newbie

    Sep 6, 2009
    I only noticed the memory usage after using dictation however it is using 1GB of RMA on my system. I have tho fierce quit it each time to get back the RAM even after turning off enhanced dictation
  6. tigerintank macrumors regular

    Jun 16, 2013
    dictation on with enhanced ticked here.

    don't have that process running at all.

    there are a couple speech related processes using minimal memory;

    com.apple.preference.speech.remoteservice 19.6 MB
    com.apple.speech.speechsynthesisd 11.0 MB
  7. Futurix, Dec 14, 2013
    Last edited: Dec 14, 2013

    Futurix macrumors 6502


    Nov 22, 2011
    In order for this process to start you need to trigger actual dictation at least once. Although in my case it consumes 'only' 543.4 MB :eek:

    EDIT: It did go away after restart though.
  8. LV426 macrumors 6502a

    Jan 22, 2013
    Is this actually a problem, or even an issue? If the blurb is to be believed Mavericks will happily max out your available RAM as a matter of course. High priority running tasks will then make priority use of uncompressed memory, and low priority tasks will have their RAM (virtually) compressed. As a last resort – new to Mavericks – stuff gets written to swap.

    Unless your usage is showing high 'memory pressure', a much better metric, I'd say there isn't an issue,
  9. nutmac thread starter macrumors 68040

    Mar 30, 2004
    No, because enhanced dictation can't be compressed all that much. So when your Mac runs out of RAM and cannot be swapped anymore (with compression), it will start to page out. And once your Mac pages out, it will thrashing and your Mac will run much slower, even if you quit all the apps. The only recourse at this point is reboot your Mac entirely to get page out-free performance back.
  10. LV426 macrumors 6502a

    Jan 22, 2013
    What evidence do you have that enhanced dictation can't be compressed much? And even if that is the case, if its memory gets written to swap, that's where it will stay unless it is actually being used – that in itself will not result in 'thrashing'.
  11. nutmac thread starter macrumors 68040

    Mar 30, 2004
    Because I frequently use around 12-14GB of physical memory (excluding cache and dictation). I use "vm_stat" from Terminal to verify actual page outs and swap outs, and while I can't verify how "compressible" enhanced dictation is, turning on dictation when I am close to maxing out physical memory triggers page outs.
  12. LV426 macrumors 6502a

    Jan 22, 2013
    Of course it will. What does your graph of Memory Pressure look like? The thing that really matters.

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