Re: [patch 0/9] mutex subsystem, -V4

[Arjan van de Ven]

> hm.  16 CPUs hitting the same semaphore at great arrival rates.  The cost
> of a short spin is much less than the cost of a sleep/wakeup.  The machine
> was doing 100,000 - 200,000 context switches per second.

interesting.. this might be a good indication that a "spin a bit first"
mutex slowpath for some locks might be worth implementing...


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