[richardwhiuk]

depends how deep the pipeline is - with a long pipeline, a pipeline flush as a result of an incorrect predict can stall for tens of cycles.

[mhh__]

That's still dwarfed by a cache miss if you're unlucky.

I just found a bug (slow code is a bug) in the D backend where bad data layout led to 32 MILLION LLC misses (85% of the whole program) coming from one line!

Think about how much of a cacheline you are using per iteration folks.

[naikrovek]

missing the cache will cost hundreds of cycles.