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Re: Early SPECWeb99 results on 2.5.33 with TSO on e1000

To: Troy Wilson <tcw@xxxxxxxxxxxxxxxxxxxx>
Subject: Re: Early SPECWeb99 results on 2.5.33 with TSO on e1000
From: Nivedita Singhvi <niv@xxxxxxxxxx>
Date: Thu, 5 Sep 2002 15:39:31 -0700
Cc: jamal <hadi@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxx
In-reply-to: <200209052211.g85MBFdm099387@tempest.prismnet.com>
References: <200209052211.g85MBFdm099387@tempest.prismnet.com>
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Quoting Troy Wilson <tcw@xxxxxxxxxxxxxxxxxxxx>:

> > Do you have any stats from the hardware that could show
> > retransmits etc;
> 
>   I'll gather netstat -s after runs with and without TSO enabled.
> Anything else you'd like to see?

Troy, this is pointing out the obvious, but make sure
you have the before stats as well :)...

> > have you tested this with zero copy as well (sendfile)
> 
>   Yes.  My webserver is Apache 2.0.36, which uses sendfile for
> anything
> over 8k in size.  But, iirc, Apache sends the http headers using
> writev.

SpecWeb99 doesnt execute the path that might benefit the 
most from this patch - sendmsg() of large files - large writes
going down..

thanks,
Nivedita



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