netdev - Re: Question about tg3 and bnx2 driver suppliers

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Message-ID: <1298229420.8559.59.camel@edumazet-laptop>
Date:	Sun, 20 Feb 2011 20:17:00 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Micha Nelissen <micha@...i.hopto.org>
Cc:	Michael Durket <durket@...hwire.stanford.edu>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: Question about tg3 and bnx2 driver suppliers

Le dimanche 20 février 2011 à 19:19 +0100, Micha Nelissen a écrit :
> Eric Dumazet wrote:
> > One possible cause of packet drops is when softirqs are disabled for too
> > long periods, even if NIC has a big RX ring (check ethtool -g eth0)
> 
> Why aren't the softirqs converted to workqueues? Wouldn't that cut 
> dependencies to other softirq users and improve latency?
> 

Because it was done like that in the old days.

Its a bit less important these days, now typical machines have 8+ cpus.
Each device interrupt can be handled by its own cpu :)





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