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Re: More measurements

To: andrewm@xxxxxxxxxx (Andrew Morton)
Subject: Re: More measurements
From: kuznet@xxxxxxxxxxxxx
Date: Tue, 30 Jan 2001 22:14:24 +0300 (MSK)
Cc: netdev@xxxxxxxxxxx
In-reply-to: <3A76C5DE.993BB140@uow.edu.au> from "Andrew Morton" at Jan 30, 1 04:45:00 pm
Sender: owner-netdev@xxxxxxxxxxx
Hello!

> ** Yup, I just retested everything.  With vanilla 2.4.1,
> when data is sent with sendfile() we get 25% more packets
> coming back than when sending with 64 kbyte send()s.  And
> 25% more bytes.

This was due to pushes made by 4K writes used by old sendfile().

Pretty silly feature, but it seems to be required. 25% of packets
are better than full collapse in some cases. Sigh...


In any case, I did not understand one thing:
do you really see some case, when you do not saturate eepro100?
This is sort of difficult to make.

Alexey

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