From: Nivedita Singhvi <niv@us•ibm.com>
To: Rick Jones <rick.jones2@hp•com>
Cc: "David S. Miller" <davem@davemloft•net>,
Andrew Morton <akpm@osdl•org>,
jgarzik@pobox•com, netdev@oss•sgi.com, christoph@graphe•net,
nirajk@calsoftinc•com, christoph@lameter•com, Shai@Scalex86•org
Subject: Re: [patch 05/13] remove last_rx update from loopback device
Date: Tue, 15 Mar 2005 17:23:25 -0800 [thread overview]
Message-ID: <42378A8D.7090801@us.ibm.com> (raw)
In-Reply-To: <42378617.3080600@hp.com>
Rick Jones wrote:
>> These loopback driver SMP optimizations are starting to really
>> driver me crazy.
>
>
> Correct or not, I suspect there are a non-trivial number of folks out
> there who use loopback performance as an indicator of over the network
> performance or at least of stack path length (less driver).
I hope not the former. Given that loopback performance is
*significantly* faster than network performance, increasing the
performance of the loopback driver in these somewhat artificial
ways (that differ from the real network device path) simply
*increases* the inaccuracy of their testing and the conclusions
they can draw from it ;).
thanks,
Nivedita
next prev parent reply other threads:[~2005-03-16 1:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-15 22:22 [patch 05/13] remove last_rx update from loopback device akpm
2005-03-15 22:41 ` Jeff Garzik
2005-03-15 23:08 ` Andrew Morton
2005-03-16 0:53 ` David S. Miller
2005-03-16 1:04 ` Rick Jones
2005-03-16 1:17 ` David S. Miller
2005-03-16 1:23 ` Nivedita Singhvi [this message]
2005-03-16 1:49 ` Rick Jones
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