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Groups > comp.sys.mac.system > #58520 > unrolled thread

10.9 - disabling memory compression

Started byAlan Browne <alan.browne@FreelunchVideotron.ca>
First post2014-04-13 12:07 -0400
Last post2014-04-19 16:37 +0000
Articles 4 on this page of 84 — 15 participants

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  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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#58783

FromWarren Oates <warren.oates@gmail.com>
Date2014-04-22 08:15 -0400
Message-ID<53565d75$0$18116$c3e8da3$3a1a2348@news.astraweb.com>
In reply to#58770
In article <slrnllbqoq.rqg.g.kreme@amelia.local>,
 Lewis <g.kreme@gmail.com.dontsendmecopies> wrote:

> XTerm? Ugh. WHY?
> 
> Terminal is so much nicer. And if not, then iTerm. XTerm sucked when it
> was cool.

Terminal isn't available in X. Anyway, for the Mac I use iTerm, which is 
way better than Terminal.

In Linux I swap between Xterm and Sakura, based on my ever-shifting 
moods. And something to do with the flakey way that Sakura handles 
sending commands, I've forgotten why. Xterm is more work to set up, but 
it's infinitely malleable.
-- 
Where's the Vangelis music?
Pris' tongue is sticking out in in the wide shot after Batty has kissed her.
They have put back more tits into the Zhora dressing  room scene.
  -- notes for Blade Runner

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#58758

FromWarren Oates <warren.oates@gmail.com>
Date2014-04-21 08:44 -0400
Message-ID<53551296$0$9623$c3e8da3$e408f015@news.astraweb.com>
In reply to#58746
In article <slrnll95fq.1k5e.g.kreme@amelia.local>,
 Lewis <g.kreme@gmail.com.dontsendmecopies> wrote:

> 
> And yeah, sure, sometimes I use sudo -s to invoke a root shell, but I
> try to avoid this and I also will set my terminal setting to a red
> background when I do.

I do that with Linux, where I use the root accounts more frequently. 
Well, not a red background, but red text instead of the yellow that I 
use normally. Also, the root prompt is different.
-- 
Where's the Vangelis music?
Pris' tongue is sticking out in in the wide shot after Batty has kissed her.
They have put back more tits into the Zhora dressing  room scene.
  -- notes for Blade Runner

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#58710

FromPaul Sture <nospam@sture.ch>
Date2014-04-20 10:42 +0200
Message-ID<rsdc2b-0kv2.ln1@news.chingola.ch>
In reply to#58627
On 2014-04-18, Lewis <g.kreme@gmail.com.dontsendmecopies> wrote:
> In message <jeidnWFQ9arUsczOnZ2dnUVZ_sGdnZ2d@giganews.com> 
>   Alan Browne <alan.browne@FreelunchVideotron.ca> wrote:
>
>> The memory compression is run by the CPU.
>
> 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.

The only evidence I can find suggests it uses "spare cpu cycles". E.g.

<http://appleinsider.com/articles/13/06/12/compressed-memory-in-os-x-109-mavericks-aims-to-free-ram-extend-battery-life>

---------------------------------------------------------------------------
Apple states that its compression techniques "reduces the size of items
in memory that haven’t been used recently by more than 50 percent," and
states that "Compressed Memory is incredibly fast, compressing or
decompressing a page of memory in just a few millionths of a second."

Compressed Memory can also take advantage of parallel execution on
multiple cores "unlike traditional virtual memory," therefore "achieving
lightning-fast performance for both reclaiming unused memory and accessing
seldom-used objects in memory." 
---------------------------------------------------------------------------

>
> Anyway, I'm done with you. If you continue to post stupid hacks, I will
> continue to reply to them warning others not to try them, but this
> thread has passed the point of anything useful. Feel free to fuck up
> your own computer however you want.

No, this is how folks learn how to get the last inch of performance out of
their kit.  If nobody experimented it would be a sad world.

30+ years ago I was doing this sort of thing all the time for benchmarking
(hah!) purposes.  It's how you learn which tweaks bring gain and which
bring pain.  Yes, you are normally working in unsupported territory so you
have to be aware of that.  And keep backups of course.

Copious backups and tested recovery procedures too.

And did I mention backups and *tested* recovery procedures? :-)

-- 
Paul Sture

The final step of #heartbleed recovery is to call your mother, and advise
her to change her maiden name                                  -- @gojomo

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#58663

Frombilly@MIX.COM
Date2014-04-19 16:37 +0000
Message-ID<liu8om$pcm$2@reader2.panix.com>
In reply to#58568
Lewis <g.kreme@gmail.com.dontsendmecopies> writes:

> Don't do this. It's stupid, there's absolutely no reason for it, it will
> probably (if not likely) fuck something up down the line and then you'll
> be complaining about how your computer is acting weird or something and
> you'll think it's OS X's fault instead of your own dumb fault (or Alan's
> by proxy).

The thing here is, the risk remains the same even just leaving everything
as Apple themselves have configured the system.

If, by the way, they were better, I'd be the very first to admit it.

Billy Y..
-- 
        sub     #'9+1   ,r0             ; convert ascii byte
	add     #9.+1   ,r0             ; to an integer
	bcc     20$                     ; not a number

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