[gem5-users] Dual load cause xbar busy

[chengyong zhong via gem5-users]

Hi all,
I'm using the O3CPU model for performance evaluation, we have two LoadUnit,
I find that if dual load issued same time, the second load will be blocked
and rescheduled after a few cycles of latency.
The O3CPUAll and Xbar trace show:
*The crossbar layer is now busy from tick xxx to xxx*
*....*
*Memory requst from inst was not sent( cache is blocked: 1,
cache_got_blocked: 1)*
My question is: How to modify the model to support dual load/store with the
XBar?

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