I recall my first kernel compile on an 8 way opteron dual core system. with its 64 GB of ram. the first one was fast. the second one was ludicrous when all the options were enabled correctly.

On Tue, May 15, 2018 at 11:07 AM, Matt Graham <mhgraham@crow202.org> wrote:
On 2018-05-15 08:04, techlists@phpcoderusa.com wrote:
Back in the day.... about 23 years ago I had a friend who wrote
custom desktop software written in C. I think he told me his C program
would take an hour or more to compile. Back then he was running an
Intel CPU running at (I hope I get this right) 133MHz with maybe 4M of
RAM. That was state of the art back then.

I wondering what compile times might look like on modern hardware?

 For that particular program, much faster.  If it'd even compile.  A 2.2.10 Linux kernel compiled in ~20 minutes on a P150 with 32M in 1999.  Curiously, it's about 19 minutes for "make clean && make bzImage modules" on a 4.11 kernel on a 4-core 3.2Ghz machine with 8G, but then the number of device drivers has gone way, way up in 19 years.  More RAM up to a point usually increases compilation speed the fastest.

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