Date: Tue, 12 Sep 2000 07:14:02 -0700 From: Julian Elischer <julian@elischer.org> To: Poul-Henning Kamp <phk@critter.freebsd.dk> Cc: Alfred Perlstein <bright@wintelcom.net>, arch@FreeBSD.ORG Subject: Re: what to do with softinterrupts? Message-ID: <39BE3A2A.167EB0E7@elischer.org> References: <73658.968758436@critter>
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Poul-Henning Kamp wrote:
>
>
>
> I think something like the lazy-switch we (intend to) do for
> hw-interrupts sounds promising: foo_input() runs as far as it can
> without blocking, when it needs to block, it does so in a another
> thread and continues input processing for other packets.
this is for soft interrupts, right?
>
> We could either have one thread per PCB socket standby for
> this use, but that's probably a waste of threads, or we can
> snatch them from a pool of threads cached for that purpose.
the second is probably enough.
but each "subsystem" may need to pre-declare how many threads
it wants in its pool.
>
> I seriously don't think we can decide which way to go until we
> have basically tried all the candidates in practice.
>
> --
> Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
> phk@FreeBSD.ORG | TCP/IP since RFC 956
> FreeBSD coreteam member | BSD since 4.3-tahoe
> Never attribute to malice what can adequately be explained by incompetence.
>
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