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

To: <mingo@xxxxxxx>
Subject: Re: [announce] [patch] limiting IRQ load, irq-rewrite-2.4.11-B5
From: Robert Olsson <Robert.Olsson@xxxxxxxxxxx>
Date: Thu, 4 Oct 2001 15:05:05 +0200
Cc: jamal <hadi@xxxxxxxxxx>, Alexey Kuznetsov <kuznet@xxxxxxxxxxxxx>, <linux-kernel@xxxxxxxxxxxxxxx>, Robert Olsson <Robert.Olsson@xxxxxxxxxxx>, <bcrl@xxxxxxxxxx>, <netdev@xxxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxx>, Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
In-reply-to: <Pine.LNX.4.33.0110040831020.1727-100000@xxxxxxxxxxxxxxxxxxxxx>
References: <Pine.GSO.4.30.0110031828100.7244-100000@xxxxxxxxxxxxxxxx> <Pine.LNX.4.33.0110040831020.1727-100000@xxxxxxxxxxxxxxxxxxxxx>
Sender: owner-netdev@xxxxxxxxxxx
Ingo Molnar writes:
 > i'm asking the following thing. dev->quota, as i read the patch now, can
 > cause extra calls to ->poll() even though the RX ring of that particular
 > device is empty and the driver has indicated it's done processing RX
 > packets. (i'm now assuming that the extra-polling-for-a-jiffy line in the
 > current patch is removed - that one is a showstopper to begin with.) Is
 > this claim of mine correct?


 Well I'm the one to blame... :-) This comes from my experiments to delay 
 to polling before going into RX-irq-enable mode. This is one of the areas
 to be addressed further with NAPI. And this code was not in any of the 
 files that I announced I think..?



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