(( Attempting to re-post this since Yahoo! shipped the previous one as HTML...
))
All,
My team is presently seeing *extremely poor* (on the order of single-digit
Mbps) Ethernet performance out of an AM3517-based COM (Technexion's TAM-3517 in
this case) when it _transmits TCP_. Receiving TCP ap
On 4/4/2013 7:50 AM, CF Adad wrote:
We've done network captures on our link, and the problem is very
strange. The iperf client transmits data quickly and steadily for a
while, but then all the sudden just stops. In the captures you can see
an ACK come back from the server for the frame that was
Thanks again!
- Original Message -
From: Mugunthan V N
To: CF Adad
Cc: "linux-omap@vger.kernel.org" ;
"da...@davemloft.net"
Sent: Thursday, April 4, 2013 4:32 AM
Subject: Re: AM3517 DaVinci EMAC Ethernet performance issues
On 4/4/2013 7:50 AM, CF Adad wrote:
> We've
Mugunthan and all,
One more quick follow-up:
With that patch applied and us removing the SMSC LAN8710 PHY driver from the
kernel and just using the default "unknown" driver, things are *much* better.
(I have no idea why that PHY driver would be hurting us since that is the exact
PHY the TAM-3
Mugunthan and all,
We have essentially proven our theory, but have yet to solve the problem. Our
theory was that the driver was essentially taking a few second nap during
transmission, despite there being plenty more work to do. We further theorized
that our custom userspace application was s
