wandboard-quad: ffec performance (about 190 Mbits/sec)

[Boris Samorodov]

Hi All,

My home PC has max perfomance approx. 800 Mbit/sec (measured between
two re adapters and a cheap d-link switch in between them).

I've just test ffec performance (one of re's is the other side):
-----
% ifconfig ffec0
ffec0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=80008<VLAN_MTU,LINKSTATE>
        ether 00:1f:7b:b4:09:8e
        inet 192.168.100.211 netmask 0xffffff00 broadcast 192.168.100.255
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

% iperf -c 192.168.100.99
Client connecting to 192.168.100.99, TCP port 5001
TCP window size: 32.5 KByte (default)
------------------------------------------------------------
[  3] local 192.168.100.211 port 11536 connected with 192.168.100.99
port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec   225 MBytes   188 Mbits/sec
-----

Here is the vmstat at the time of iperf test:
-----
% vmstat -w1
 procs      memory      page                    disks     faults         cpu
 r b w     avm    fre   flt  re  pi  po    fr  sr mm0 mm1   in   sy   cs
us sy id
 1 0 0    235M  1934M   219   0   1   0   149   5   0   0  687  685  911
 0  2 98
 0 0 0    235M  1934M    24   0   0   0    44   9   0   0  246  307   91
 1  1 99
 0 0 0    235M  1934M    32   0   0   0    44   9   0   0  208  280   94
 0  1 99
 0 0 0    235M  1934M    29   0   0   0    44   9   0   0  288  373  108
 0  0 99
 1 0 0    256M  1933M   311   0   0   0    87   9   0   0 8309  757
13373  1 26 73
 0 0 0    256M  1933M    12   0   0   0    32   9   0   6 11955  465
20366  0 37 63
 0 0 0    256M  1933M    22   0   0   0    44   9   0   0 11379  537
19295  0 34 65
 1 0 0    256M  1933M    12   0   0   0    24   9   0   1 11171  461
19067  0 34 65
 0 0 0    256M  1933M    12   0   0   0    24   9   0   0 11109  476
18945  1 34 65
 1 0 0    256M  1933M    12   0   0   0    24   9   0   0 11354  468
19352  0 36 64
 0 0 0    256M  1933M    13   0   0   0    24   9   0   0 11162  465
18866  1 34 65
 0 0 0    256M  1933M    12   0   0   0    24   9   0   2 11297  471
19165  0 36 64
 1 0 0    256M  1933M    12   0   0   0    24   9   0   0 11345  465
19296  1 35 64
 0 0 0    256M  1933M    12   0   0   0    24   9   0   0 11044  461
18634  0 35 65
 0 0 0    235M  1934M    65   0   0   0   263   9   0   1 3224  602 5060
 2  9 89
 0 0 0    235M  1934M    12   0   0   0    24   9   0   0  142  206   77
 0  0 100
 0 0 0    235M  1934M    34   0   0   0    64   9   0   0  260  347  104
 0  1 99
 0 0 0    235M  1934M    12   0   0   0    24   9   0   0  142  206   79
 0  0 100
-----

Is this an expected result? Assuming that the system was about 65% idle,
there is a space for improvement.

The system:
-----
% uname -a
FreeBSD wandboard 11.0-CURRENT FreeBSD 11.0-CURRENT #6 r265218M: Fri May
 2 18:24:07 SAMT 2014
bsam at wandboard:/usr/obj/usr/src/sys/WANDBOARD-QUAD  arm
-----

-- 
WBR, Boris Samorodov (bsam)
FreeBSD Committer, http://www.FreeBSD.org The Power To Serve