D. Netsu_07: Hello, do you guys why in Mac my game lag? is not for the internet.

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Modern PC memory modules transfer 64 bits (8 bytes) at a time, in a burst of eight transfers, so one command triggers a read or write of a full cache line from memory. (DDR1/2/3/4 SDRAM burst transfer size is configurable up to 64B; CPUs will select the burst transfer size to match their cache line size, but 64B is common)

BOLT is a post-link optimizer developed to speed up large applications. It achieves the improvements by optimizing application's code layout based on execution profile gathered by sampling profiler, such as Linux perf tool. An overview of the ideas implemented in BOLT along with a discussion of its potential and current results is available in CGO'19 paper.

By the mid-1990s, Borland was citing build times of hundreds of thousands of lines of source per minute.

Yes, there was a drawback to instantaneous compile times. Fewer optimizations were done, and almost always the resultant code was slower than the C equivalent. But it didn't matter. Removing the gap between the steps of writing and running code was worth more than some amount of additional runtime performance. I used to hit the build key every so often, even while typing, just to check for syntax errors. And zero compilation speed eventually became standard, with the rise of interpreted languages like Perl, Ruby, and Python.

Minimal linker. Have you ever looked at the specs for an object file format? "Complicated" and "bulky" are two terms that come to mind. Turbo Pascal used a custom object file with a minimal design. The "linker" wasn't doing anywhere near the work of standard linkers. The result was that the link step was invisible; you didn't even notice it.