Bug#565404: linux-image-2.6.26-2-amd64: atl1e: TSO is broken
Anders Boström <anders@netinsight.net>
> Sent: Wednesday, January 20, 2010 5:27 PM
> To: Jie Yang
> Cc: ben@decadent.org.uk; netdev@vger.kernel.org;
> 565404@bugs.debian.org; Xiong Huang
> Subject: Re: Bug#565404: linux-image-2.6.26-2-amd64: atl1e:
> TSO is broken
>
> >>>>> "JY" == Jie Yang <Jie.Yang@Atheros.com> writes:
>
> JY> Anders Boström <anders@netinsight.net> wrote:
> >> It is an ASUS M4A78 PRO motherboard with the Atheros >>
> AR8121/AR8113/AR8114 on-board.
> >>
> >> >> ~25Mbyte/s performance. I get ~5000 retransmitted
> packets >> per GByte >> data, according to RetransSegs in
> >> /proc/net/snmp . wireshark in the >> client show that the
> >> server send out a sequence of frames. All but the >>
> last >> one are 1500 bytes IP-packets. The last one is
> shorter, but >> the >> IP-header still say 1500 byte. The
> client then >> requests retransmit, >> and the
> retransmitted frame arrives >> with correct IP-header.
>
> JY> i just test it on Linux localhost.localdomain
> 2.6.31.5-127.fc12.x86_64 #1 SMP Sat Nov 7 21:11:14 EST 2009
> x86_64 x86_64 x86_64 GNU/Linux.
> JY> with hardware, Atheros AR8121/AR8113/AR8114 PCI-E
> Ethernet Controller (rev b0) JY> device id : 1969:1026 (rev b0)
>
> JY> i upload/download a 382M it work well with retransmit packet:
>
> Have you tested NFS over TCP? The block-size the application
> uses can have an effect on this. What application did you
> use? Block-size?
>
yes, I tested NFS over TCP.
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