[Gems-users] State transitions per cycle and Instruction Profiling

[Enric Herrero <enricherrero@xxxxxxxx>]

Hi,
I have a couple of questions about Ruby:

I've seen that the variable Lx_CACHE_TRANSITIONS_PER_RUBY_CYCLE is set to 32 and that is recommended to set it higher if it's a protocol that uses zz_recycle... actions. I would like to set it to a more realistic value (smaller) to limit the number of snoops/cycle but I don't see why this is not desirable if I use the zz_recycle... actions.

The second question is about profiling instructions. I already have the values for the data cache with REMOVE_SINGLE_CYCLE_DCACHE_FAST_PATH=true but it seems that for instructions the profiler only takes into account the misses and I allways get a 100% miss rate for the instruction cache. That's why I added a call to the counter in the doRequest function of the Sequencer. The call is activated when (hit && request.getType() == CacheRequestType_IFETCH) == true. If I understood well this requests never go to the mandatory queue. Do you think it's correct?

Thank you for your help!

Enric

---

Sé un Mejor Amante del Cine
¿Quieres saber cómo? ¡Deja que otras personas te ayuden!
.