On 29/06/2019 17:34, Martin Gregorie wrote:
[]
> Have you made any comparison of compilation speeds, say a decent-sized C
> programs? For comparison a program I wrote (9000 lines split into 15
> source files and 11 header files) takes:
>
>   0.730 s on a Lenovo T440 (i5 at 1.9qGHZ, 8Gb RAM)
>   1.366 s on an AMD dualAthlon at 1.0 GHz, 4 GB RAM)
> 24.314 s on my RPI2, an early 512MB Pi 1B+ which claims 698 bogoMIPS
>
> The T440 and the dual Athlon box are running Fedora 30 and the RPi is
> running  Raspbian 4.19.42. All three systems were fully updated on Friday.
>
> I'd be most interested to know how its compilation speed compares with
> the dual Athlon because, if/when that dies, the obvious replacement
> candidates are an RPi 4 or an i5-equipped mini ITX system.

No, I haven't.  One compile that I have (NTP) took about 25 minutes on a
RasPi-1, down to ~5 minutes on a 3B.  I would expect a factor in the
order of perhaps two better for a 4 GB RasPi-4.  So /maybe/ your compile
would come down to "a few seconds", but perhaps not as fast as the
dual-Athlon.  As I noted, my comments referred to the generic "desktop"
as per the thread title.

If you like to send me your program, and if it's not like most C/C++
programs I see which require about a day to get all the required
libraries and then don't compile, I'd be happy to check it for you.  My
address is on the bottom of my home page: https://www.satsignal.eu/  The
second compile might be quicker if the OS is caching the source files.
Oh, and would you mean graphical desktop (which I hardly ever use) or
command-line?

--
Cheers,
David
Web: http://www.satsignal.eu

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