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RE: sendfile+zerocopy: fairly sexy (nothing to do with ECN)

To: Jonathan Earle <jearle@xxxxxxxxxxxxxxxxxx>
Subject: RE: sendfile+zerocopy: fairly sexy (nothing to do with ECN)
From: Antonin Kral <A.Kral@xxxxxxxxxx>
Date: Mon, 29 Jan 2001 17:34:37 +0100 (CET)
Cc: "'jamal'" <hadi@xxxxxxxxxx>, Andrew Morton <andrewm@xxxxxxxxxx>, lkml <linux-kernel@xxxxxxxxxxxxxxx>, netdev@xxxxxxxxxxx
In-reply-to: <28560036253BD41191A10000F8BCBD116BDCE5@zcard00g.ca.nortel.com>
Sender: owner-netdev@xxxxxxxxxxx
> > Throughput: 100Mbps is really nothing. Linux never had a problem with
> > 4-500Mbps file serving. So throughput is an important number. so is
> > end to end latency, but in file serving case, latency might 
> > not be a big deal so ignore it.
> 
> If I try to route more than 40mbps (40% line utilization) through a 100mbps
> port (tulip) on a 2.4.0-test kernel running on a pIII 500 (or higher)
> system, not only does the performance drop to nearly 0, the system gets all
> sluggish and unusable.  This is with or without Jamal's FF patches.
> 
> How are you managing to get such high throughput?
> 

I have used 2.2.13 to 2.2.18 and 2.4.0, for first approach, with no
patches and with no probles I managed bandwidth about 200 and 300 Mbps

Antonin



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