<tt><font size=2>Ok,</font></tt>
<br><tt><font size=2>This is great. I will already go deeper based on these
considerations.</font></tt>
<br>
<br><tt><font size=2>My server is based on a Freescale QorIQ P4080 with
8 e500mc cores (1.5GHz), each with 32/32kB instruction/data L1 caches and
a 128 kB L2 cache. The chip has dual 1 MB L3 caches, each connected
to a 64-bit DDR2/DDR3 memory controller.</font></tt>
<br><tt><font size=2>It is a uma system.</font></tt>
<br>
<br><tt><font size=2>I have a last question concerning the background run
of netperf test:</font></tt>
<br><tt><font size=2>for example, if I use in a shell script:</font></tt>
<br>
<br><font size=2 face="Courier New">netperf -p 17170 -cC -H ip_addr -t
UDP_STREAM -- -m 8000&</font>
<br><font size=2 face="Courier New">netperf -p 17170 -cC -H ip_addr -t
UDP_STREAM -- -m 8000</font>
<br>
<br><font size=2 face="Courier New">results:</font>
<br><font size=2 face="Courier New">UDP UNIDIRECTIONAL SEND TEST from 0.0.0.0
(0.0.0.0) port 0 AF_INET to 10.0.17.200 (10.0.17.200) port 0 AF_INET</font>
<br><font size=2 face="Courier New">Socket Message Elapsed
Messages
CPU Service</font>
<br><font size=2 face="Courier New">Size Size
Time Okay Errors Throughput Util
Demand</font>
<br><font size=2 face="Courier New">bytes bytes secs
# #
10^6bits/sec % SS us/KB</font>
<br>
<br><font size=2 face="Courier New">112640 8000 10.00
770705 0 4932.5
69.02 3.364 </font>
<br><font size=2 face="Courier New">108544
10.00 525289
3361.8 84.58 16.487</font>
<br>
<br><font size=2 face="Courier New">UDP UNIDIRECTIONAL SEND TEST from 0.0.0.0
(0.0.0.0) port 0 AF_INET to 10.0.17.200 (10.0.17.200) port 0 AF_INET</font>
<br><font size=2 face="Courier New">Socket Message Elapsed
Messages
CPU Service</font>
<br><font size=2 face="Courier New">Size Size
Time Okay Errors Throughput Util
Demand</font>
<br><font size=2 face="Courier New">bytes bytes secs
# #
10^6bits/sec % SS us/KB</font>
<br>
<br><font size=2 face="Courier New">112640 8000 10.00
767345 0 4911.0
69.02 3.388 </font>
<br><font size=2 face="Courier New">108544
10.00 521573
3338.0 79.60 15.628</font>
<br>
<br>
<br><font size=2 face="Courier New">or</font>
<br>
<br>
<br><font size=2 face="Courier New">netperf -p 17170 -cC -H ip_addr -t
TCP_STREAM -- -m 128&</font>
<br><font size=2 face="Courier New">netperf -p 17170 -cC -H ip_addr -t
TCP_STREAM -- -m 128</font>
<br>
<br><font size=2 face="Courier New">results:</font>
<br><font size=2 face="Courier New">TCP STREAM TEST from 0.0.0.0 (0.0.0.0)
port 0 AF_INET to 10.0.17.200 (10.0.17.200) port 0 AF_INET</font>
<br><font size=2 face="Courier New">Recv Send Send
Utilization Service Demand</font>
<br><font size=2 face="Courier New">Socket Socket Message Elapsed
Send Recv
Send Recv</font>
<br><font size=2 face="Courier New">Size Size Size
Time Throughput local remote
local remote</font>
<br><font size=2 face="Courier New">bytes bytes bytes
secs. 10^6bits/s % S % S
us/KB us/KB</font>
<br>
<br><font size=2 face="Courier New"> 87380 16384 128
10.00 1867.39 100.00 46.75
8.774 16.406 </font>
<br><font size=2 face="Courier New">TCP STREAM TEST from 0.0.0.0 (0.0.0.0)
port 0 AF_INET to 10.0.17.200 (10.0.17.200) port 0 AF_INET</font>
<br><font size=2 face="Courier New">Recv Send Send
Utilization Service Demand</font>
<br><font size=2 face="Courier New">Socket Socket Message Elapsed
Send Recv
Send Recv</font>
<br><font size=2 face="Courier New">Size Size Size
Time Throughput local remote
local remote</font>
<br><font size=2 face="Courier New">bytes bytes bytes
secs. 10^6bits/s % S % S
us/KB us/KB</font>
<br>
<br><font size=2 face="Courier New"> 87380 16384 128
10.00 1966.14 100.00 46.75
8.333 15.582 </font>
<br>
<br><font size=2 face="Courier New">Could the total throughput be considered
as the sum of the two obtained results?</font>
<br><font size=2 face="Courier New">If so, what could be the limitations
of the single process throughput?</font>
<br><font size=2 face="Courier New">It seems that the two processes are
running in parallel according to the top command and to the system performance
tool.</font>
<br>
<br><font size=2 face="Courier New">Have a nice day and thank you.</font>
<br>
<br><font size=2 face="Courier New">Best regards.</font>
<br>
<br><font size=2 face="Courier New">/Simon</font>