Hi, We need to findout where is the bottlenect.
1. Run vmstat on the ML403 board and find out the percentage CPU is busy when you are transferring the file. That will show if cpu is busy or not. 2. Run oprofile and find out which are the routines eating away the cpu time. Once we have data from both the above routines, we can find out the bottlenecks. Regards Bhupi On 6/23/07, Mohammad Sadegh Sadri <[EMAIL PROTECTED]> wrote:
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 Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
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