Messages in this thread | | | Subject | Re: [PATCH] backing-dev: use synchronize_rcu_expedited instead of synchronize_rcu | From | Peter Zijlstra <> | Date | Thu, 02 Feb 2012 22:59:04 +0100 |
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On Thu, 2012-02-02 at 15:43 -0500, Mikulas Patocka wrote: > Do you have some measurable use case where the user is removing block > devices so heavily that this causes a problem?
Even one can be a problem, we're having people spend lots of time and effort to reduce machine wide jitter and interference. Adding it with such disregard isn't cool.
There's no reason a management cpu adding or removing block devices should perturb the high-freq trading or industrial laser control running on the other side of the machine.
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