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Re: [announce] [patch] limiting IRQ load, irq-rewrite-2.4.11-B5

To: jamal <hadi@xxxxxxxxxx>
Subject: Re: [announce] [patch] limiting IRQ load, irq-rewrite-2.4.11-B5
From: Ben Greear <greearb@xxxxxxxxxxxxxxx>
Date: Wed, 03 Oct 2001 23:50:09 -0700
Cc: Ingo Molnar <mingo@xxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, Alexey Kuznetsov <kuznet@xxxxxxxxxxxxx>, Robert Olsson <Robert.Olsson@xxxxxxxxxxx>, Benjamin LaHaise <bcrl@xxxxxxxxxx>, netdev@xxxxxxxxxxx, Linus Torvalds <torvalds@xxxxxxxxxxxxx>, Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>, Simon Kirby <sim@xxxxxxxxxxxxx>
Organization: Candela Technologies
References: <Pine.GSO.4.30.0110031848220.7244-100000@xxxxxxxxxxxxxxxx>
Sender: owner-netdev@xxxxxxxxxxx
jamal wrote:

> Your patch with Linus' idea of "flag mask" would be more acceptable as a
> last resort. All subsytems should be cooperative and we resort to this to
> send misbehaving kids to their room.

That requires re-writing all the drivers, right?  Seems a very bad
thing to do in 2.4

> 
> > Your NAPI patch, or any driver/subsystem that does flowcontrol accurately
> > should never be affected by it in any way. No overhead, no performance
> > hit.
> 
> so far your appraoch is that of a shotgun i.e  "let me fire in
> that crowd and i'll hit my target but dont care if i take down a few
> more"; regardless of how noble the reasoning is, it's  as Linus described
> it -- a sledge hammer.

Aye, but by shooting this target and getting a few bystanders, you save
everyone else...  (And it's only a flesh wound!!)

Ben

-- 
Ben Greear <greearb@xxxxxxxxxxxxxxx>       <Ben_Greear AT excite.com>
President of Candela Technologies Inc      http://www.candelatech.com
ScryMUD:  http://scry.wanfear.com     http://scry.wanfear.com/~greear

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