Hi,
welcome to my networking nightmare: using iperf to test network speed, my FreeNAS 11.2-U3 is only able to saturate the 10GbE network for a very short time after reboot.
Uptime ~2 minutes:
Not too bad, 9.3 Gb/s.
Uptime ~4 minutes:
Less than 2 Gb/s for host centos-02 and 7 Gb/s for host centos-10. Both far from 10GbE.
No load or traffic on the FreeNAS server.
iperf between centos-02 and centos-10 easily reaches 9.3 Gb/s.
Does this make sense to anyone?
FreeNAS hardware: Fujitsu RX200 S6, Xeon E5645, 24 GB RAM, Intel X550-T2 NIC
centos-02 hardware: Supermicro X10DRI, Xeon E5-2630L v3, 128 GB RAM, Intel X550-T2 NIC
centos-10 hardware: Fujitsu RX200 S6, Xeon E5645, 24 GB RAM, Intel X550-T2 NIC
Thanks
- Frank
welcome to my networking nightmare: using iperf to test network speed, my FreeNAS 11.2-U3 is only able to saturate the 10GbE network for a very short time after reboot.
Uptime ~2 minutes:
Code:
root@freenas:~ # uptime 10:51PM up 2 mins, 1 user, load averages: 0.57, 0.23, 0.09 root@freenas:~ # iperf -c centos-10.example.com ------------------------------------------------------------ Client connecting to centos-10.example.com, TCP port 5001 TCP window size: 1.00 MByte (default) ------------------------------------------------------------ [ 3] local 10.0.0.40 port 47394 connected with 10.0.0.24 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 10.8 GBytes 9.29 Gbits/sec root@freenas:~ # iperf -c centos-02.example.com ------------------------------------------------------------ Client connecting to centos-02.example.com, TCP port 5001 TCP window size: 1.00 MByte (default) ------------------------------------------------------------ [ 3] local 10.0.0.40 port 47396 connected with 10.0.0.22 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 10.9 GBytes 9.36 Gbits/sec
Not too bad, 9.3 Gb/s.
Uptime ~4 minutes:
Code:
root@freenas:~ # uptime 10:53PM up 4 mins, 1 user, load averages: 0.65, 0.34, 0.15 root@freenas:~ # iperf -c centos-02.example.com ------------------------------------------------------------ Client connecting to centos-02.example.com, TCP port 5001 TCP window size: 1.00 MByte (default) ------------------------------------------------------------ [ 3] local 10.0.0.40 port 14864 connected with 10.0.0.22 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 1.89 GBytes 1.62 Gbits/sec root@freenas:~ # iperf -c centos-10.example.com ------------------------------------------------------------ Client connecting to centos-10.example.com, TCP port 5001 TCP window size: 1.00 MByte (default) ------------------------------------------------------------ [ 3] local 10.0.0.40 port 43680 connected with 10.0.0.24 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 8.23 GBytes 7.07 Gbits/sec
Less than 2 Gb/s for host centos-02 and 7 Gb/s for host centos-10. Both far from 10GbE.
No load or traffic on the FreeNAS server.
iperf between centos-02 and centos-10 easily reaches 9.3 Gb/s.
Does this make sense to anyone?
FreeNAS hardware: Fujitsu RX200 S6, Xeon E5645, 24 GB RAM, Intel X550-T2 NIC
centos-02 hardware: Supermicro X10DRI, Xeon E5-2630L v3, 128 GB RAM, Intel X550-T2 NIC
centos-10 hardware: Fujitsu RX200 S6, Xeon E5645, 24 GB RAM, Intel X550-T2 NIC
Thanks
- Frank