Re: [PATCH] TSO Reloaded

[John Heffner <jheffner@xxxxxxx>]

On May 17, 2005, at 10:28 PM, David S. Miller wrote:

> From: John Heffner <jheffner@xxxxxxx>
> Date: Tue, 17 May 2005 22:26:09 -0400
>
> > Though it may be moot by now, I just ran some tests of my own with 
> > this
> > patch.  This was on a dual 2.4 GHz Xeon booted with a UP kernel,
> > running iperf over an e1000 at a 1500 byte MTU.  I measured idle CPU 
> > by
> > running a process which sits in a gettimeofday() loop.  Numbers are 
> > CPU
> > utilization, all turned out +/- 1%.
> >
> > No TSO:  86.6%
> > Old TSO: 61.0%
> > New TSO: 88.5%
> Yeah, TSO Reloaded really stinks. :-)
>
> Try the "Super TSO" patch I just posted instead.
Interesting timing. :)
With the new patch I'm getting 78.0%.

  -John