RE: Virtex 4 Avnet Mini-Module Networking.
flat view
From: Mohammad Sadegh Sadri <hidden>
Date: 2007-06-22 21:21:34
Andrei, well you are correct, using EDK9.1SP2 I created a custome design for ML405 = and implemented it. My design was exactly the same as what xapp941 presents= .=20 I have not access to ML405, but examining implementation results for two de= signs it is obvious that they are different. logic resource usage for xapp9= 41 is over 6000 slices but for the custome design it is near 5700 slices.=20 In addition the fan out value for PLB TEMAC clock is near 5000 for xapp941 = and near 3000 for our custome design. this means that plb temac module in x= app941 is much larger than our plb temac module.=20 I examined the MHS files for both designs carefully, they are really the sa= me. Of course it seems that the mhs file for xapp941 is edited by hand or a= t least is not created by the usual method we use. This is because signal n= ames and module names are completely different from an automatic EDK9.1 gen= erated design.=20 Finally why not ask the two authors of this app note about what they have d= one in their desing? is it some kind of secret?=20 and have you ever tried using ngc file for plb temac of xapp941 in a custom= e design? .... should not be really neccessary of course. ----------------------------------------
Date: Thu, 21 Jun 2007 22:18:52 +0400 From: <redacted> To: <redacted> CC: <redacted> Subject: Re: Virtex 4 Avnet Mini-Module Networking. =20 Mohammad Sadegh Sadri wrote:quoted
=20 very interesting =20 the provided xps project from xapp941 results 230Mbits but your custome=
system is 83.0Mbits, yes?
=20 yes =20quoted
just, are you sure the ppc core has the same core clock frequency in bo=
th designs? I mean may be the xapp941 is running at 300MHz but yours at 100=
MHz.=20=20 both run at 300MHz =20quoted
And what about a custom system with 9.1SP2? does that gives the same pe=
rformance?
=20 haven't tried this yet =20quoted
Finally If possible please release the test results for TCP streams. ( =
9.1 no SP and 9.1 SP2 )
=20 The TEMAC driver is from EDK 9.1.02 (IOW, SP2). =20 bitstream made by myself with EDK 9.1.00: =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
=20 root@192.168.119.11:~/netperf-2.4.1/src# ./netperf -l 30 -H 192.168.119.1=
-i 10, 2 -I 99,10 -t TCP_STREAM -- -m 32768 -s 262144
TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.119.1 (1=
92.168.119.1) port 0 AF_INET : =B15.0% @ 99% conf.
Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec =20 87380 217088 32768 30.00 41.66 =20 bitstream from XAPP941: =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =20 root@192.168.119.11:~/netperf-2.4.1/src# ./netperf -l 30 -H 192.168.119.1=
-i 10, 2 -I 99,10 -t TCP_STREAM -- -m 32768 -s 262144
TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.119.1 (1=
92.168.119.1) port 0 AF_INET : =B15.0% @ 99% conf.
Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec =20 87380 217088 32768 30.00 111.86 =20 And I didn't test ML405 receive performance. =20 Thanks, Andrei =20quoted
thanks =20 =20 =20 ----------------------------------------quoted
Date: Thu, 21 Jun 2007 18:53:49 +0400 From: <redacted> To: <redacted> CC: <redacted>; <redacted>; glenn.g.hart=
@us.westinghouse.com
quoted
quoted
Subject: Re: Virtex 4 Avnet Mini-Module Networking. Mohammad Sadegh Sadri wrote:quoted
I'm wondering where are the original developers of TEMAC driver these=
days, I have not seen any posts from any of andrei
quoted
quoted
quoted
nor grant in the recent weeks. may be they are involved in other proj=
ects.
quoted
quoted
As for me - no, not until the end of this week.. I am puzzled with the following: I've got ML405 recently. There is a prebuilt bitstream with TEMAC in S=
GDMA mode for this board made by Xilinx (XAPP941).
quoted
quoted
With the TEMAC driver from EDK 9.1SP2 and the XAPP941 bitstream I've g=
ot (no jumbo frames):
quoted
quoted
XTemac: using sgDMA mode. XTemac: using TxDRE mode XTemac: using RxDRE mode XTemac: buffer descriptor size: 32768 (0x8000) XTemac: (buffer_descriptor_init) phy: 0x3cf8000, virt: 0xff100000, =
size: 0x8000
quoted
quoted
eth%d: XTemac: PHY detected at address 7. eth0: Xilinx TEMAC #0 at 0x80000000 mapped to 0xC5060000, irq=3D0 eth0: XTemac id 1.0f, block id 5, type 8 eth0: XTemac: Options: 0xb8f2 eth0: XTemac: We renegotiated the speed to: 1000 eth0: XTemac: speed set to 1000Mb/s eth0: XTemac: Send Threshold =3D 16, Receive Threshold =3D 2 eth0: XTemac: Send Wait bound =3D 1, Receive Wait bound =3D 1 root@192.168.119.11:~/netperf-2.4.1/src# ./netperf -l 30 -H 192.168=
.119.1 -i 10,
quoted
quoted
2 -I 99,10 -t UDP_STREAM -- -m 32768 -s 262144 UDP UNIDIRECTIONAL SEND TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET =
to 192.168.11
quoted
quoted
9.1 (192.168.119.1) port 0 AF_INET : =B15.0% @ 99% conf. Socket Message Elapsed Messages Size Size Time Okay Errors Throughput bytes bytes secs # # 10^6bits/sec 217088 32768 30.00 26391 0 230.60 107520 30.00 26377 230.48 Not that bad for this setup. With xps (EDK 9.1 without any SPs) I've tried creating exact the same =
design.
quoted
quoted
So that exact the same kernel etc could be used for the both bitstream=
s.
quoted
quoted
And with the self-made one I see exact the same output with the only d=
ifference:
quoted
quoted
root@192.168.119.11:~/netperf-2.4.1/src# ./netperf -l 30 -H 192.168=
.119.1 -i 10,
quoted
quoted
2 -I 99,10 -t UDP_STREAM -- -m 32768 -s 262144 UDP UNIDIRECTIONAL SEND TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET =
to 192.168.11
quoted
quoted
9.1 (192.168.119.1) port 0 AF_INET : =B15.0% @ 99% conf. Socket Message Elapsed Messages Size Size Time Okay Errors Throughput bytes bytes secs # # 10^6bits/sec 217088 32768 30.00 9593 0 83.82 107520 30.00 9586 83.76 :o( Rebuilding the XAPP941 project with EDK 9.1.00 still leaves 230Mb/sec. I also pulled the additional timing constraints from XAPP941's data/sy=
stem.ucf
quoted
quoted
into the self-made data/system.ucf, but this haven't change anything. I've run out of ideas, and switched from TEMAC to other Xilinx stuff f=
or a while.
quoted
quoted
Thanks, Andrei=20 _________________________________________________________________ Connect to the next generation of MSN Messenger=20 http://imagine-msn.com/messenger/launch80/default.aspx?locale=3Den-us&s=
ource=3Dwlmailtagline
quoted
_______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded=20
_________________________________________________________________ Connect to the next generation of MSN Messenger=A0 http://imagine-msn.com/messenger/launch80/default.aspx?locale=3Den-us&sourc= e=3Dwlmailtagline=