On Sat, 29 Jun 2019 19:28:09 +0100, David Taylor wrote:

> 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?

I'll pass on this, thanks: like quite a lot of developers I do have a
personal support library or two and latish on a warm day like this has
been, I'm quite likely to omit stuff I shouldn't.

One thing I forgot to mention is that all the times I quoted were for a
second or third compile.

Unsurprisingly, repeated compile times on the T440 and dual Athlon were a
factor of 2-3 faster than the first compile. When I've looked in the past
'top' has always made it obvious that this is due to Linux caching files
in RAM. I was a little surprised to see that this effect was entirely
absent for my Pi - obviously 500MB isn't enough memory to let file
caching have any significant effect on compilation speed for non-trivial
programs.


--
Martin    | martin at
Gregorie  | gregorie dot org

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