The Return of the Frame Pointers
Brendan Gregg
MARCH 16, 2024
2005-2023: The winter of broken profilers However, the change was then applied to x86-64 (64-bit) as well, which had sixteen registers and didn't benefit so much from a seventeenth. and we may have been flying close to the edge of hardware cache warmth, where adding a bit more instructions caused a big drop.
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