Re: Improve spinlock performance by moving work to one core

From: Ling Ma
Date: Thu Nov 05 2015 - 23:29:41 EST


Thanks for your suggestion.
We will look for real scenario to test, and could you please introduce
some benchmarks on spinlock ?


> Your new spinlock code completely change the API and the semantics of the
> existing spinlock calls. That requires changes to thousands of places
> throughout the whole kernel. It also increases the size of the spinlock from
> 4 bytes to 32 bytes. It is basically a no-go.
> However, if you can improve the performance within the existing API and
> locking semantics, it will be much more acceptable.
> Cheers,
> Longman
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