Anders Boström <[email protected]> > Sent: Wednesday, January 20, 2010 5:27 PM > To: Jie Yang > Cc: [email protected]; [email protected]; > [email protected]; Xiong Huang > Subject: Re: Bug#565404: linux-image-2.6.26-2-amd64: atl1e: > TSO is broken > > >>>>> "JY" == Jie Yang <[email protected]> writes: > > JY> Anders Boström <[email protected]> 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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