netdev - Re: rps perfomance WAS(Re: rps: question

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Message-ID: <4BC741AE.3000108@hp.com>
Date:	Thu, 15 Apr 2010 09:41:18 -0700
From:	Rick Jones <rick.jones2@...com>
To:	hadi@...erus.ca
CC:	David Miller <davem@...emloft.net>, eric.dumazet@...il.com,
	therbert@...gle.com, netdev@...r.kernel.org, robert@...julf.net,
	xiaosuo@...il.com, andi@...stfloor.org
Subject: Re: rps perfomance WAS(Re: rps: question

> 
> I speculate again that it may be too costly to run rps on something like
> a tigerton or intel clovertown where you have cores sharing/contending
> for an FSB. If I can get answers to the question: "What h/ware are
> people running?" i could be proven wrong.
> [Note: I am not against RPS - i think it has its place; so i hope my
> desire to find out when to use rps doesnt show as hostility towards
> rps.]

IPS (~= RPS) was running on shared FSB HP9000's.  Now, that was also a BSD 
networking stack with netisrq's and the like.  TOPS (~= RFS) was also run on 
shared FSB HP9000s, as well as CC-NUMA HP9000s and Integrity systems.  TOPS was 
implemented in a Streams-based stack tracing its history to a common ancestor 
with Solaris (Mentat).

rick jones
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