Messages in this thread | | | Subject | Re: aio stress panic on 2.6.11-mm1 | From | Arjan van de Ven <> | Date | Wed, 09 Mar 2005 12:10:13 +0100 |
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On Wed, 2005-03-09 at 16:34 +0530, Suparna Bhattacharya wrote: > Any sense of how costly it is to use spin_lock_irq's vs spin_lock > (across different architectures) ? Isn't rwsem used very widely ?
oh also rwsems aren't used all that much simply because they are quite more expensive than regular semaphores, so that you need a HUGE bias in reader/writer ratio to make it even worth it...
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