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   <H1>[Mageia-dev] make -l ?</H1>
    <B>Pascal Terjan</B> 
    <A HREF="mailto:mageia-dev%40mageia.org?Subject=Re%3A%20%5BMageia-dev%5D%20make%20-l%20%3F&In-Reply-To=%3CCA%2BCX%2BbgW8%3DMAA7ghqYRGdD%3DW%2BY5PxMS1RjY%2BmcUA6XFSpPM-Eg%40mail.gmail.com%3E"
       TITLE="[Mageia-dev] make -l ?">pterjan at gmail.com
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    <I>Mon Sep  3 01:18:41 CEST 2012</I>
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<PRE>On Sun, Sep 2, 2012 at 5:14 PM, Jose Jorge &lt;<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">lists.jjorge at free.fr</A>&gt; wrote:
&gt;<i> Le 31/08/2012 11:40, Pascal Terjan a &#233;crit :
</I>&gt;<i>
</I>&gt;&gt;<i> Currently %make is expanded to make -j&lt;nb cpu&gt;
</I>&gt;&gt;<i>
</I>&gt;&gt;<i> I'd like it to be replaced with make -l&lt;nb cpu&gt;
</I>&gt;&gt;<i>
</I>&gt;&gt;<i>
</I>&gt;<i> Some activities, like USB transfers are seen as huge system load (I often
</I>&gt;<i> get more than 4 on a monocpu system, while is CPU is idle to compile. So I
</I>&gt;<i> think we may end with a side effect that build time will be longer....
</I>
Currently I see the following cases:
- 1 big job with parallel makefile (like kernel), it will probably run
more builds in parallel as building 24 .o does not cause a load of 24
- 2 big jobs with parallel makefile, it will probably reduce things as
currently each of them run 24 builds in parallel, leading to a load of
about 40, now the load will be 24
- 1 big job and a small one: I am not sure there will be much change
- 1 or 2 small jobs: no change

And yes the load is not only the cpu, but that's a good thing. If we
have 40 processes trashing the disk it's better to not start more even
if we have 20 cpu idling

But yes it needs to be tested
</PRE>


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