Yes you can use perf to profile on cache misses (perf record -e cache-misses). | Hacker News

Hacker News new | past | comments | ask | show | jobs | submit

login

minimax on Jan 2, 2014 | parent | context | favorite | on: Memory cache optimizations

Yes you can use perf to profile on cache misses (perf record -e cache-misses).

mtanski on Jan 3, 2014 [–]

Not only that but you can annotate the source and see which function and which instruction (C or asm) caused it. This way you know exactly which field is the one causing cache misses.

Dito for branch miss-prediction.

Consider applying for YC's Spring batch! Applications are open till Feb 11.
Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact