RE: [lwip-users] A speed question

[Pisano, Edward A]

Regarding the implementation of lwIP RAW_API on MicroBlaze @ 100MHz built with EDK 8.2i, is it set up for polling or is it interrupt driven?  Is it employing TCP, UDP or both?

 

Could someone provide a sample of the initialization and configuration for lwIP RAW_API, particularly for the Interrupt driven case?  Is there a special case for RAW_API where the application code must provide for the connection of the emac interrupts to the FIFO Interrupt Handlers in software?

 

I’ve set up a simple MicroBlaze application in EDK 8.2i using interrupts following the XiLinx examples provided (which I believe are for polling mode).  The symptom is that incoming packets to my SP305 Dev. Board are not being passed to the rcv_pkt_buf in the emac driver.  Hence, higher level software functions never sees the arriving packets.  In SOCKETS_API mode, these transactions work fine.

 

Regards,

Ed

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From: address@hidden [mailto:address@hidden On Behalf Of Sathya Thammanur
Sent: Wednesday, August 30, 2006 12:24 PM
To: Mailing list for lwIP users
Subject: Re: [lwip-users] A speed question

 

Iperf is an open source tool that can be used to measure the performances.

http://dast.nlanr.net/Projects/Iperf/

Regarding performances, the 8.2i release of EDK from Xilinx has improved performances with RAW API. The throughput seen were in the ranges of 50-60Mbps for MicroBlaze running @100Mhz with regular 10/100 ethernet core without dma.

Sathya

On 8/30/06, Pisano, Edward A <address@hidden> wrote:

Hi,
How are you measuring your data rate?

I'm building an application targeting a Virtex 2 using lwIP and running
on a MicroBlaze at about 150MHz.  I'd like to know what types of
non-invasive tools you are using to monitor and measure your apps speed.

Regards,
Ed

-----Original Message-----
From: lwip-users-bounces+edward.pisano=address@hidden
[mailto: address@hidden] On Behalf Of
Hampus Thorell
Sent: Wednesday, August 30, 2006 1:00 AM
To: Mailing list for lwIP users
Subject: [lwip-users] A speed question

Hey!

I have built an application on a Xilinx Virtex 2 Pro FPGA running on 200

Mhz using lwIP with TCP and the raw API. The maximum throughput I get is

somewhere round 7 Mbit/s. Has anyone else built an application under
similar circumstances and gotten better throughput than that?

Best regards,
Hampus



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