Hi I'm interesting in profiling with ARM fast model.
As I understand, fast model doesn't suport cycle accurate profile.
So I'd like to estimate with fast model profile information.
1. How accurate streamline data, linux perf data with ARM fast model?
those profile shows I/D , L2 cache load/hit/miss number. Can I trust those numbers ?
2. If I trust those numbers, Can I calculate execution time with those numbers ?
for example,
- 1ns(1GHz) for CPU with cache access, 2ns(500Mhz) IO access
- elasped cycle 1000 cycle
- cache miss cycle 500 cycle - Total elasped time = 1000 cycle * 1ns + 500 cycle * 2ns = 2000 ns
if you enabled cache model in fast model, you can see cache load/hit/miss number, you can use it for evaluation, but timing info is not accurate.