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Re: 10.9 - disabling memory compression

From Lewis <g.kreme@gmail.com.dontsendmecopies>
Newsgroups comp.sys.mac.system
Subject Re: 10.9 - disabling memory compression
Date 2014-04-21 03:49 +0000
Organization Miskatonic U
Message-ID <slrnll95a0.1k5e.g.kreme@amelia.local> (permalink)
References (5 earlier) <slrnll1f12.1v7.g.kreme@amelia.local> <jeidnWFQ9arUsczOnZ2dnUVZ_sGdnZ2d@giganews.com> <slrnll34tq.j24.g.kreme@amelia.local> <53519765$0$61394$c3e8da3$5e5e430d@news.astraweb.com> <kg7c2b-c0u2.ln1@news.chingola.ch>

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In message <kg7c2b-c0u2.ln1@news.chingola.ch> 
  Paul Sture <nospam@sture.ch> wrote:
> On 2014-04-18, JF Mezei <jfmezei.spamnot@vaxination.ca> wrote:
>> On 14-04-18 17:06, Lewis wrote:
>>
>>> I am pretty sure it is run by the encryption chip, in point of fact. I
>>> can't find the documentation on it though. Regardless, it is run by
>>> cycles that would otherwise be idle. So, zero cost.
>>
>>
>> Compression is done by the CPU. There is no "encryption chip".
>>
>> You are correct that for the average workload, not all cores are used,
>> so the compression and decompression can use an otherwise idle core.
>> However, this causes that core to "wake up" and use power.

> I am running VMware Fusion and am wondering how it deals with multiple
> cores.  Does it try to utilise these "intelligently" by spreading the load
> across cores, for example?

Yes, if you allow it to. Apple has a technology in recent OS X versions
called GCD (Grand Central Dispatch, IIRC) which manages multiple
processors and cores for applications without those applications having
to be thread-safe (or even thread-aware). It's one of the cooler new
underpinnings in OS X and it works astonishingly well.

While I often see a single core on my i7 windows machine at 100% and all
the other 7 cores idle, that never happens on the Mac, processor cycles
are spread much more evenly.


-- 
Yes, I do happen to believe that love is mainly about pushing chocolate
covered candies and, y'know, in some cultures, a chicken. You can call
me a sucker, I don't care, because I do believe in it. Bottom line: it's
couples who are truly right for each other that wade through the same
crap as everybody else, but the big difference is they don't let it take
them down. One of those two people will stand up and fight for that
relationship every time. If it's right, and they're real lucky, one of
them will say something.

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Thread

10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-13 12:07 -0400
  Re: 10.9 - disabling memory compression billy@MIX.COM - 2014-04-13 17:57 +0000
    Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-13 15:35 -0400
  Re: 10.9 - disabling memory compression Warren Oates <warren.oates@gmail.com> - 2014-04-13 14:50 -0400
    Re: 10.9 - disabling memory compression Paul Sture <nospam@sture.ch> - 2014-04-13 21:18 +0200
      Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-13 15:55 -0400
    Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-13 15:37 -0400
      Re: 10.9 - disabling memory compression Warren Oates <warren.oates@gmail.com> - 2014-04-13 15:51 -0400
    Re: 10.9 - disabling memory compression Leonard Blaisdell <leoblaisdell@sbcglobal.net> - 2014-04-13 19:35 -0700
      Re: 10.9 - disabling memory compression Your Name <YourName@YourISP.com> - 2014-04-14 16:34 +1200
        Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-14 16:30 -0400
          Re: 10.9 - disabling memory compression Paul Sture <nospam@sture.ch> - 2014-04-20 10:53 +0200
            Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-20 09:27 -0400
      Re: 10.9 - disabling memory compression Warren Oates <warren.oates@gmail.com> - 2014-04-14 07:51 -0400
        Re: 10.9 - disabling memory compression Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-04-16 13:35 +0000
      Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-14 16:30 -0400
        Re: 10.9 - disabling memory compression JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-04-14 17:36 -0400
          Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-14 18:06 -0400
          Re: 10.9 - disabling memory compression Paul Sture <nospam@sture.ch> - 2014-04-20 09:15 +0200
        Re: 10.9 - disabling memory compression me@home.spamsucks.ca (Király) - 2014-04-15 06:01 +0000
          Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-16 16:54 -0400
        Re: 10.9 - disabling memory compression Paul Sture <nospam@sture.ch> - 2014-04-20 09:11 +0200
          Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-20 09:24 -0400
      Re: 10.9 - disabling memory compression Jolly Roger <jollyroger@pobox.com> - 2014-04-15 02:10 +0000
  Re: 10.9 - disabling memory compression Rick Jones <rick.jones2@hp.com> - 2014-04-14 23:32 +0000
    Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-14 19:58 -0400
    Re: 10.9 - disabling memory compression Paul Sture <nospam@sture.ch> - 2014-04-20 09:45 +0200
      Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-20 09:26 -0400
  Re: 10.9 - disabling memory compression Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2014-04-15 00:38 -0700
    Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-16 16:58 -0400
  Re: 10.9 - disabling memory compression Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-04-16 13:32 +0000
    Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-16 17:04 -0400
      Re: 10.9 - disabling memory compression Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-04-17 00:04 +0000
        Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-17 15:15 -0400
          Re: 10.9 - disabling memory compression android <here@there.was> - 2014-04-17 21:29 +0200
          Re: 10.9 - disabling memory compression android <here@there.was> - 2014-04-17 21:29 +0200
            Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-17 15:48 -0400
              Re: 10.9 - disabling memory compression android <here@there.was> - 2014-04-17 21:58 +0200
                Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-17 16:07 -0400
                Re: 10.9 - disabling memory compression billy@MIX.COM - 2014-04-19 16:06 +0000
                Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-19 12:37 -0400
                Re: 10.9 - disabling memory compression Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-04-19 17:27 +0000
                Re: 10.9 - disabling memory compression Paul Sture <nospam@sture.ch> - 2014-04-20 08:33 +0200
                Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-20 09:13 -0400
            Re: 10.9 - disabling memory compression Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-04-18 05:55 +0000
              Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-18 10:00 -0400
          Re: 10.9 - disabling memory compression JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-04-17 15:30 -0400
            Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-17 16:02 -0400
              Re: 10.9 - disabling memory compression android <here@there.was> - 2014-04-17 22:10 +0200
                Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-17 16:33 -0400
                Re: 10.9 - disabling memory compression Jolly Roger <jollyroger@pobox.com> - 2014-04-17 21:54 +0000
                Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-17 18:13 -0400
                Re: 10.9 - disabling memory compression Jolly Roger <jollyroger@pobox.com> - 2014-04-17 23:59 +0000
                Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-18 17:59 -0400
                Re: 10.9 - disabling memory compression Jolly Roger <jollyroger@pobox.com> - 2014-04-19 17:27 +0000
                Re: 10.9 - disabling memory compression Martin Frost me at invalid stanford daht edu <nospam@stanford.edu.invalid> - 2014-04-19 14:15 -0700
                Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-19 18:06 -0400
                Re: 10.9 - disabling memory compression Martin Frost me at invalid stanford daht edu <nospam@stanford.edu.invalid> - 2014-04-19 17:16 -0700
                Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-19 20:32 -0400
                Re: 10.9 - disabling memory compression JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-04-19 21:40 -0400
                Re: 10.9 - disabling memory compression Your Name <YourName@YourISP.com> - 2014-04-20 15:45 +1200
          Re: 10.9 - disabling memory compression Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-04-18 05:46 +0000
            Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-18 09:44 -0400
              Re: 10.9 - disabling memory compression Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-04-18 21:06 +0000
                Re: 10.9 - disabling memory compression JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-04-18 17:21 -0400
                Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-18 17:30 -0400
                Re: 10.9 - disabling memory compression nospam <nospam@nospam.invalid> - 2014-04-18 18:49 -0400
                Re: 10.9 - disabling memory compression billy@MIX.COM - 2014-04-19 16:33 +0000
                Re: 10.9 - disabling memory compression Paul Sture <nospam@sture.ch> - 2014-04-20 08:53 +0200
                Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-20 09:22 -0400
                Re: 10.9 - disabling memory compression Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-04-21 03:49 +0000
                Re: 10.9 - disabling memory compression Alan Browne <alan.browne@FreelunchVideotron.ca> - 2014-04-18 17:24 -0400
                Re: 10.9 - disabling memory compression Warren Oates <warren.oates@gmail.com> - 2014-04-18 17:25 -0400
                Re: 10.9 - disabling memory compression Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-04-19 03:09 +0000
                Re: 10.9 - disabling memory compression billy@MIX.COM - 2014-04-19 15:21 +0000
                Re: 10.9 - disabling memory compression Warren Oates <warren.oates@gmail.com> - 2014-04-19 16:01 -0400
                Re: 10.9 - disabling memory compression Paul Sture <nospam@sture.ch> - 2014-04-20 10:47 +0200
                Re: 10.9 - disabling memory compression Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-04-21 03:52 +0000
                Re: 10.9 - disabling memory compression JF Mezei <jfmezei.spamnot@vaxination.ca> - 2014-04-21 04:26 -0400
                Re: 10.9 - disabling memory compression Lewis <g.kreme@gmail.com.dontsendmecopies> - 2014-04-22 04:07 +0000
                Re: 10.9 - disabling memory compression Warren Oates <warren.oates@gmail.com> - 2014-04-22 08:15 -0400
                Re: 10.9 - disabling memory compression Warren Oates <warren.oates@gmail.com> - 2014-04-21 08:44 -0400
                Re: 10.9 - disabling memory compression Paul Sture <nospam@sture.ch> - 2014-04-20 10:42 +0200
    Re: 10.9 - disabling memory compression billy@MIX.COM - 2014-04-19 16:37 +0000

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