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Date: Tue, 12 Sep 2000 07:14:02 -0700
From: Julian Elischer <julian@elischer.org>
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To: Poul-Henning Kamp <phk@critter.freebsd.dk>
Cc: Alfred Perlstein <bright@wintelcom.net>, arch@FreeBSD.ORG
Subject: Re: what to do with softinterrupts?
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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-- 
      __--_|\  Julian Elischer
     /       \ julian@elischer.org
    (   OZ    ) World tour 2000
---> X_.---._/  presently in:  Perth
            v


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