3 ms·
The article says "LBRs (Last Branch Recording) in order to speed up branches". Reading the PDF seems to be more about recording it (for profiling?). If it reall
by throwaway_pdp09 7y ago
The article says "LBRs (Last Branch Recording) in order to speed up branches". Reading the PDF seems to be more about recording it (for profiling?). If it really is about speedups can someone summarise how, and how that differs from using branch predictors.
- chrisseaton 7y agoI think it's for tooling like profilers, not directly for performance. But you could use that tool to improve performance in your code, so maybe that's what they mean.
- zbjornson 7y agoThat's correct. Info on LBR in general: https://lwn.net/Articles/680985/ https://lwn.net/Articles/680985/