Use the following command in Linux please: ifconfig eth0 mtu 8982
As well you should do that on your PC in the measurement. Ming >From: Mohammad Sadegh Sadri <[EMAIL PROTECTED]> >To: Ming Liu <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>,<[email protected]>, <[EMAIL PROTECTED]> >Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel >Date: Sat, 23 Jun 2007 19:08:29 +0000 > > >Dear Ming, > >Really thanks for reply, > >about thresholds and waitbound OK! I'll adjust them in adapter.c , > >but what about enabling jumbo frames? should I do any thing special to enable Jumbo fram support? > >we were thinking that it is enabled by default. Is it? > >thanks > > > > >---------------------------------------- > > From: [EMAIL PROTECTED] > > To: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [email protected]; [EMAIL PROTECTED] > > Subject: RE: ML403 gigabit ethernet bandwidth - 2.6 kernel > > Date: Sat, 23 Jun 2007 18:48:19 +0000 > > > > Dear Mohammad, > > There are some parameters which could be adjusted to improve the > > performance. They are: TX and RX_Threshold TX and RX_waitbound. In my > > system, we use TX_Threshold=16 and Rx_Threshold=8 and both waitbound=1. > > > > Also Jumbo frame of 8982 could be enable. > > > > Try those hints and share your improvement with us. > > > > BR > > Ming > > > > >From: Mohammad Sadegh Sadri > > >To: Andrei Konovalov , Linux PPC Linux > > PPC, Grant Likely > > >Subject: ML403 gigabit ethernet bandwidth - 2.6 kernel > > >Date: Sat, 23 Jun 2007 12:19:12 +0000 > > > > > > > > >Dear all, > > > > > >Recently we did a set of tests on performance of virtex 4FX hard TEMAC > > module using ML403 > > > > > >we studied all of the posts here carefully: these are the system > > characteristics; > > > > > >Board : ML403 > > >EDK : EDK9.1SP2 > > >Hard TEMAC version and PLTEMAC version are both 3.0.a > > >PPC clock frequency : 300MHz > > >Kernel : 2.6.21-rc7 , downloaded from grant's git tree some thing near one > > week ago > > >DMA type: 3 (sg dma) > > >DRE : enabled for TX and RX, (2) > > >CSUM offload is enabled for both of TX and RX > > >tx and rx fifo sizes : 131072 bits > > > > > >the board comes up over NFS root file system completely and without any > > problems. > > > > > >PC system used for these tests is : CPU P4 Dual Core, 3.4GHz , 2Gigabytes > > memory, Dual gigabit ethernet port, running linux 2.6.21.3 > > >We have tested the PC system band width and it can easily reach 966mbits/s > > when connected to the same PC. ( using the same cross cable used for ml403 > > test) > > > > > >Netperf is compiled with TCP SEND FILE enabled, ( -DHAVE_SENDFILE) > > > > > >(from board to PC) > > >netperf -t TCP_SENDFILE -H 10.10.10.250 -F /boot/zImage.elf -- -m 16384 -s > > 87380 -S 87380 > > > > > >the measured bandwidth for this test was just 40.66Mbits. > > >It is also true for netperf from PC to board. > > > > > >we do not have any more idea about what we should do to improve the > > bandwidth. > > >any help or ideas is appreciated... > > > > > >_________________________________________________________________ > > >Connect to the next generation of MSN > > Messenger?>http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline > > > > >_______________________________________________ > > >Linuxppc-embedded mailing list > > >[email protected] > > >https://ozlabs.org/mailman/listinfo/linuxppc-embedded > > > > _________________________________________________________________ > > 免费下载 MSN Explorer: http://explorer.msn.com/lccn/ > > > >_________________________________________________________________ >News, entertainment and everything you care about at Live.com. Get it now! >http://www.live.com/getstarted.aspx _________________________________________________________________ 免费下载 MSN Explorer: http://explorer.msn.com/lccn/ _______________________________________________ Linuxppc-embedded mailing list [email protected] https://ozlabs.org/mailman/listinfo/linuxppc-embedded
