Messages in this thread | | | Date | Mon, 25 Aug 2008 10:44:03 -0500 | From | Christoph Lameter <> | Subject | Re: [PATCH 2/2] smp_call_function: use rwlocks on queues rather than rcu |
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Paul E. McKenney wrote:
> But I am not sure that this gets the grace periods to go fast enough to > cover Christoph's use case -- he seems to be in a "faster is better" > space rather than in an "at least this fast" space. Still, it would > likely help in some important cases.
I think there was an AIM9 regression in the close/open tests when the struct file was switched to RCU. That test could be run with various intervals to figure out if a shorter RCU period is beneficial and how short an RCU period is needed to avoid the regression.
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