Re: TCP/IP send, sendfile, RAW

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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