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Re: [RFC] TCP Vegas for 2.6

To: Stephen Hemminger <shemminger@xxxxxxxx>
Subject: Re: [RFC] TCP Vegas for 2.6
From: Nivedita Singhvi <niv@xxxxxxxxxx>
Date: Tue, 09 Mar 2004 11:36:34 -0800
Cc: John Heffner <jheffner@xxxxxxx>, Andi Kleen <ak@xxxxxxx>, linux-net <linux-net@xxxxxxxxxxxxxxx>, netdev@xxxxxxxxxxx
In-reply-to: <20040309110323.1295cf92@dell_ss3.pdx.osdl.net>
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Stephen Hemminger wrote:

I used ttcp and netperf, but the tests aren't as interesting as setting up the
toplogies, like 1G Ethernet; Ethernet -> PPP -> Ethernet and Ethernet -> IRDA 
-> Ethernet
and DSL connections through SSH.   Plus, LTP (and are local automated test 
machines)
don't seem to be setup for multi-machine tests.

I agree the environments are more interesting in this case - but not sure about just using ttcp and netperf in this case. Single stream, I presume? Both are blasting out data without disk I/O occurring. I'm concerned about enterprise server situations seeing a hit due to the memory/cacheline impact - i.e. catch the environments where this is not going to be of help. We might be able to get some other performance benchmark run data (Specweb* ?).

I'm trying to solve two problems - testing of
the current mainline kernel for the new features
that have gone in and also helping the testing
guys with the automated testing of kernel.org
kernels for networking stuff (solving that multi-
machine problem if they haven't already)..

thanks,
Nivedita





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