Re: TCP/IP send, sendfile, RAW

[Roy Rietveld]

Thanks now i know, the stack is slow 40MBit on loopback.


> From: Avi Kivity <avi@xxxxxxxxxx>
> To: Roy Rietveld <rwm_rietveld@xxxxxxxxxxx>
> CC: P@xxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
> Subject: Re: TCP/IP send, sendfile, RAW
> Date: Fri, 05 May 2006 15:39:56 +0300
>
> Roy Rietveld wrote:
> > the platform is a netsilicon NS9360 witch include an 100MBit ethernet 
> > device.
> > The driver came with the software(LxNETES) for the development board.
> > CPU load is 100% when running sender program.
> >
> > cat /proc/interrupts; sleep 10; cat /proc/interrupts doen't work anymore 
> > because cpu is to busy.
> >
> > Does sendto give other processes time when the hardware is transmitting 
> > data?
> > Is this bad hardware or is the cost of sendto that high.
>
> Try sending UDP over loopback and see.
>
> --
> Do not meddle in the internals of kernels, for they are subtle and quick to 
> panic.
>
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