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Re: [PATCH] dummy: improve performance

To: "David S. Miller" <davem@xxxxxxxxxxxxx>
Subject: Re: [PATCH] dummy: improve performance
From: "Catalin(ux aka Dino) BOIE" <util@xxxxxxxxxxxxxxx>
Date: Thu, 26 May 2005 09:03:29 +0300 (EEST)
Cc: netdev@xxxxxxxxxxx
In-reply-to: <20050525.151149.08323692.davem@xxxxxxxxxxxxx>
References: <Pine.LNX.4.62.0505201306110.29305@xxxxxxxxxxxxxxxxxxx> <20050525.151149.08323692.davem@xxxxxxxxxxxxx>
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On Wed, 25 May 2005, David S. Miller wrote:

From: "Catalin(ux aka Dino) BOIE" <util@xxxxxxxxxxxxxxx>
Date: Fri, 20 May 2005 13:11:24 +0300 (EEST)

I tested the speed and seems very low (both old version and the new one).
Something like 37Mbits/s. It is normal?
I can easily get 80Mbit/s on the same machine on ethernet.

How are you receiving packets on the dummy device for
performance testing?  This device is a transmit blackhole
and receives no packets :-)

I only test the output part. I measure how time it takes to send an amount of data (icmp or udp).

I really don't see a real need for your patch, dummy device
performance cannot be claimed to be important at all.

Of course it's not very important.
But if someone is using it, why not at full speed?

Thanks.

---
Catalin(ux aka Dino) BOIE
catab at deuroconsult.ro
http://kernel.umbrella.ro/

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