* Measurable performance improvements from RCU_INIT_POINTER()?
@ 2014-07-19 8:12 Paul E. McKenney
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From: Paul E. McKenney @ 2014-07-19 8:12 UTC (permalink / raw)
To: edumazet, davem, brouer; +Cc: netdev
Hello!
Did the replacement of selected calls to rcu_assign_pointer() by
RCU_INIT_POINTER() in the networking stack result in measurable
system-level performance improvements?
The reason I ask is that some of the compiler guys on the C and C++
standards committees are suggesting changes that would add barriers
in some cases. I suspect that this is a very bad idea, and was hoping
that you guys would have some hard numbers on the system-level effects
of barriers. ;-)
Thanx, Paul
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2014-07-19 8:12 Measurable performance improvements from RCU_INIT_POINTER()? Paul E. McKenney
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