Sebastian Stach wrote:
Thanks for doing the test.
My conditions are different in that i have a gigabit network.
The only difference in the iperf options is that i'm using
-d (dualmode).
On the weekend i will have time to do a test with the NICs
set to 100MBit.
Sebastian Stach
Hi,
I changed the switch to 1Gbps and run the test again.
No problems with the NICs. The iperf is running for 10 hours now. 2TB of
data was transmitted in both directions.
I am running an endless loop on a client side
while 1
iperf -c xx.xx.xx.xx --format k -m -p 999 -t 1800 -d
sleep 5
end
------------------------------------------------------------
Server listening on TCP port 999
TCP window size: 64.0 KByte (default)
------------------------------------------------------------
------------------------------------------------------------
Client connecting to yy.yy.yy.yy, TCP port 999
TCP window size: 137 KByte (default)
------------------------------------------------------------
[ 5] local xx.xx.xx.xx port 18834 connected with yy.yy.yy.yy port 999
[ 4] local xx.xx.xx.xx port 999 connected with yy.yy.yy.yy port 59754
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-1800.0 sec 82823213 KBytes 376938 Kbits/sec
[ 4] MSS size 1448 bytes (MTU 1500 bytes, ethernet)
[ 5] 0.0-1800.0 sec 73954944 KBytes 336575 Kbits/sec
[ 5] MSS size 1448 bytes (MTU 1500 bytes, ethernet)
And another endless loop on server side
while 1
iperf -s -p 999
end
------------------------------------------------------------
Server listening on TCP port 999
TCP window size: 64.0 KByte (default)
------------------------------------------------------------
[ 4] local yy.yy.yy.yy port 999 connected with xx.xx.xx.xx port 18834
------------------------------------------------------------
Client connecting to xx.xx.xx.xx, TCP port 999
TCP window size: 65.0 KByte (default)
------------------------------------------------------------
[ 6] local yy.yy.yy.yy port 59754 connected with xx.xx.xx.xx port 999
Waiting for server threads to complete. Interrupt again to force quit.
[ ID] Interval Transfer Bandwidth
[ 6] 0.0-1800.0 sec 79.0 GBytes 377 Mbits/sec
[ 4] 0.0-1800.0 sec 70.5 GBytes 337 Mbits/sec
Client is on the Supermicro X9SCA-F
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
1500
options=4219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO>
ether 00:25:90:73:d1:76
inet xx.xx.xx.xx netmask 0xffffff80 broadcast xx.xx.xx.xx
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
Server is running on the Cisco UCS C200 M2
igb0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric
0 mtu 1500
options=401bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO>
ether 50:57:a8:af:eb:0a
inet yy.yy.yy.yy netmask 0xffffff80 broadcast yy.yy.yy.yy
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
Both sides are running FreeBSD 8.3-RELEASE amd64 GENERIC
So the only difference is that I am using NIC em0 in shared mode for
remote management. Can you try your test with shared mode?
Miroslav Lachman
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