[gentoo-user] Re: Puzzled with duration of chromium emerge under profile 17.0

[Grant Edwards]

On 2017-12-06, Mick <michaelkintzios@×××××.com> wrote:

> I discovered that building Chromium with gcc-6.4.0 is taking an inordinately
> longer time on a laptop with 1st gen i7 and 4G of RAM, e.g.:
>
>      Wed Sep 27 17:36:53 2017 >>> www-client/chromium-61.0.3163.100
>        merge time: 6 hours, 40 minutes and 50 seconds.
>
>      Thu Nov  9 17:44:58 2017 >>> www-client/chromium-62.0.3202.89
>        merge time: 8 hours, 12 minutes and 30 seconds.
>
> -->switch to gcc-6.4.0
>
>      Mon Dec  4 11:39:36 2017 >>> www-client/chromium-62.0.3202.89
>        merge time: 20 hours, 2 minutes and 4 seconds.
>
>      Wed Dec  6 18:41:13 2017 >>> www-client/chromium-62.0.3202.94
>        merge time: 22 hours, 47 minutes and 35 seconds.

Did the CPU throttling stuff somehow get broken when you updated to
gcc-6.4.0?  After updating a bunch of stuff a month or two back, I
noticed that builds suddently took 4X as long.  I finally realized
that I had broken the CPU throttling feature and my laptop was always
running at 400MHz and not ramping up to 2.<whatever> GHz when doing
things like compiling large packages.

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