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Re: Throttle a process deliberately?

From Jolly Roger <jollyroger@pobox.com>
Newsgroups comp.sys.mac.system
Subject Re: Throttle a process deliberately?
Date 2017-03-17 23:29 +0000
Organization People for the Ethical Treatment of Pirates
Message-ID <ej39qbF7q0uU1@mid.individual.net> (permalink)
References <Wsednb6Wurj59lHFnZ2dnUU7-W_NnZ2d@giganews.com>

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On 2017-03-17, Alan Browne <alan.browne@freelunchvideotron.ca> wrote:
>
> I'm preparing some vids and using handbrake to make "small" copies.  In 
> the meantime I'm in DaVinci Resolve working on the next great thing.
>
> Is there a way in OS X to "throttle" handbrake down to no more than 75% 
> of each core?  (It's maxing out each core and HT making DV Resolve 
> 'jerky' when scrubbing.
>
> Handbrake itself has no such feature.

I think you can pass :threads=n (where n is the number of cores you want
it to use) to Handbrake (possibly in the "Additional Options" text field
in the Video tab). 

> In Windows one could assign cores to a process (or de-assign them using 
> the affinity check boxes - tedious but it did it).    That's not the way 
> I'd want to do it, but is there some OS prioritization method to "choke" 
> Handbrake?

You could try renicing it with something like:

sudo renice n PID 
(where PID is Handbrake's process ID)

You can also pause and continue any process with:

kill -SIGSTOP PID
kill -SIGCONT PID

-- 
E-mail sent to this address may be devoured by my ravenous SPAM filter.
I often ignore posts from Google. Use a real news client instead.

JR

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Thread

Throttle a process deliberately? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-03-17 19:04 -0400
  Re: Throttle a process deliberately? Jolly Roger <jollyroger@pobox.com> - 2017-03-17 23:29 +0000
    Re: Throttle a process deliberately? Calum <com.gmail@nospam.scottishwildcat> - 2017-03-18 14:58 +0000
      Re: Throttle a process deliberately? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-03-18 17:33 -0400
        Re: Throttle a process deliberately? Calum <com.gmail@nospam.scottishwildcat> - 2017-03-19 20:56 +0000
        Re: Throttle a process deliberately? Jolly Roger <jollyroger@pobox.com> - 2017-03-19 21:39 +0000
          Re: Throttle a process deliberately? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-03-21 07:51 -0400
            Re: Throttle a process deliberately? Jolly Roger <jollyroger@pobox.com> - 2017-03-21 12:08 +0000
              Re: Throttle a process deliberately? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-03-21 08:38 -0400
                Re: Throttle a process deliberately? Jolly Roger <jollyroger@pobox.com> - 2017-03-21 13:07 +0000
                Re: Throttle a process deliberately? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-03-21 09:16 -0400
                Re: Throttle a process deliberately? Jolly Roger <jollyroger@pobox.com> - 2017-03-21 13:37 +0000
                Re: Throttle a process deliberately? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-03-21 11:09 -0400
                Re: Throttle a process deliberately? Jolly Roger <jollyroger@pobox.com> - 2017-03-21 17:08 +0000
                Re: Throttle a process deliberately? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-03-21 14:54 -0400
                Re: Throttle a process deliberately? Jolly Roger <jollyroger@pobox.com> - 2017-03-21 20:54 +0000
                Re: Throttle a process deliberately? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-03-21 18:40 -0400
                Re: Throttle a process deliberately? Jolly Roger <jollyroger@pobox.com> - 2017-03-21 23:01 +0000
                Re: Throttle a process deliberately? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-03-22 19:33 -0400
                Re: Throttle a process deliberately? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-03-23 05:22 +0000
          Re: Throttle a process deliberately? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-03-21 07:53 -0400
            Re: Throttle a process deliberately? Jolly Roger <jollyroger@pobox.com> - 2017-03-21 12:03 +0000
              Re: Throttle a process deliberately? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-03-21 08:39 -0400
                Re: Throttle a process deliberately? Jolly Roger <jollyroger@pobox.com> - 2017-03-21 13:08 +0000
                Re: Throttle a process deliberately? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-03-21 09:25 -0400
      Re: Throttle a process deliberately? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-03-21 09:32 -0400
    Re: Throttle a process deliberately? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-03-18 17:31 -0400
      Re: Throttle a process deliberately? JF Mezei <jfmezei.spamnot@vaxination.ca> - 2017-03-18 17:49 -0400
        Re: Throttle a process deliberately? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-03-21 11:09 -0400
      Re: Throttle a process deliberately? Jolly Roger <jollyroger@pobox.com> - 2017-03-18 23:26 +0000
        Re: Throttle a process deliberately? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-03-19 17:21 +0000
        Re: Throttle a process deliberately? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-03-21 09:35 -0400
      Re: Throttle a process deliberately? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-03-19 17:04 +0000
        Re: Throttle a process deliberately? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-03-21 11:07 -0400

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