Shell copy_file() issue with NFS and small MAC receive buffer

Kirspel, Kevin kevin.kirspel at optimedical.com
Fri Apr 1 12:11:12 UTC 2011


Yes I would.  With a small receive buffer, packets would get dropped but would eventually recover because of the TCP/IP protocol.  What would never recover is having a fragmented packet stream that is close to the size of the receive buffer.

-----Original Message-----
From: Chris Johns [mailto:chrisj at rtems.org] 
Sent: Thursday, March 31, 2011 10:05 PM
To: Kirspel, Kevin
Cc: rtems-users at rtems.org
Subject: Re: Shell copy_file() issue with NFS and small MAC receive buffer

On 1/04/11 11:36 AM, Kirspel, Kevin wrote:
> They won't work either.
>
> works
> ping -s 4096 192.168.18.133
>
> fails
> ping -s 8192 192.168.18.133
>

I would look into this more. This should work and I suspect something in 
the driver.

If you do a 4K ping while an NFS transfer is operating you will see a 
problem.

Chris




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