12/07/2018 03:22, Wang, Yipeng1:
> From: Stephen Hemminger [mailto:step...@networkplumber.org]
> > For small windows, reader-writer locks are slower than a spin lock
> > because there are more cache bounces.
> Hi, Stephen,
> You are correct and we understand that spinlock might be slightly faster than 
> counter based rwlock in this case. However, the counter based rwlock is the 
> exception path when TSX fails.
> If performance of this exception path is a big concern, a more optimal 
> read-write lock scheme (e.g. TLRW) should be introduced into rte_rwlock in 
> the future.

Something like this?
        eal/rwlocks: Try read/write and relock write to read locks added

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