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Re: [lwip-users] lwip whole performance down
From: |
vincent cui |
Subject: |
Re: [lwip-users] lwip whole performance down |
Date: |
Thu, 17 May 2012 23:19:28 +0000 |
Hi all:
I found the root cause and got it done. The Ethernet interrupt handler has a
potential bug .
Thank you for all your help..
-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Sylvain Rochet
Sent: 2012年5月17日 18:33
To: Mailing list for lwIP users
Subject: Re: [lwip-users] lwip whole performance down
Hi Vincent,
On Thu, May 17, 2012 at 10:15:36AM +0000, vincent cui wrote:
>
> When lwIP performance goes down, the Ethernet DMA's RX buffer
> unavailable flag is always set ... don't know why, it seems HW
> problem.
This is kind of a hazardous way to suspect first a hardware problem before
checking the software driver.
From here, it looks like a faulty behavior in the DMA interrupt handler of your
MAC driver.
Sylvain
- [lwip-users] lwip whole performance down, vincent cui, 2012/05/15
- Re: [lwip-users] lwip whole performance down, vincent cui, 2012/05/16
- Re: [lwip-users] lwip whole performance down, Bill Auerbach, 2012/05/16
- Re: [lwip-users] lwip whole performance down, Sylvain Rochet, 2012/05/16
- Re: [lwip-users] lwip whole performance down, vincent cui, 2012/05/16
- Re: [lwip-users] lwip whole performance down, Sylvain Rochet, 2012/05/17
- Re: [lwip-users] lwip whole performance down, vincent cui, 2012/05/17
- Re: [lwip-users] lwip whole performance down, Sylvain Rochet, 2012/05/17
- Re: [lwip-users] lwip whole performance down, vincent cui, 2012/05/17
- Re: [lwip-users] lwip whole performance down, Sylvain Rochet, 2012/05/17
- Re: [lwip-users] lwip whole performance down,
vincent cui <=
- Re: [lwip-users] lwip whole performance down, Sylvain Rochet, 2012/05/18