4 ms·
Interesting. Sounds like they needed perf. Yes, it's sampling, but its sampling is extremely fast. Porting to Linux has its advantages.
by Aissen 10y ago
Interesting. Sounds like they needed perf. Yes, it's sampling, but its sampling is extremely fast. Porting to Linux has its advantages.
- unwind 10y agoI don't think this can be called "sampling"; it's single-stepping and analysing each instruction. There's nothing statistical about it, no "samples" that are hoped to represent some hidden full system, since the entire instruction stream is analyzed when the simulator is enabled.
- Aissen 10y agoI understand the advantages of their tool, it's interesting to get an instruction-level detail. It's just that they compared sampling systems that are far from having perf's granularity.