Re: context switch vs. signal delivery [was: Re: Accelerating user mode linux]

From: Jamie Lokier (
Date: Mon Aug 05 2002 - 10:41:26 EST

Ingo Molnar wrote:
> And threads can do queued events that amortizes context switch
> overhead, while queued signals generate per-event signal delivery, so
> signal delivery costs are not amortized.
> (Not that i advocate SIGIO or helper threads for highperformance IO -
> Ben's aio interface is the fastest and most correct approach.)

Isn't the per-event queued signal cost amortised when using sigwaitinfo()?

-- Jamie
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