I have done extreme amounts of testing. cp, dd, rysnc, iperf, netcat, custom-dd and probably more.
What I am looking at is a strong network. The iperf results below show that, and I have other data to validate it as well.
What I am looking for is a sharing protocol that will match these speeds or come even close to them.
What I am currently getting with the sharing protocols iSCSI (FreeNAS) and CIFS (WIN7) is about 1.5 GB/m to 2.5 GB/m. My goal is 3.0 GB/m
What could I be screwing up in my sharing protocol implementation that is reducing the speed so drastically?
root@fdas:~# ./iperf -c 192.168.2.138
------------------------------------------------------------
Client connecting to 192.168.2.138, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.2.118 port 43066 connected with 192.168.2.138 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 1.05 GBytes 900 Mbits/sec
root@fdas:~# ./iperf -c 192.168.2.138 -t 60
------------------------------------------------------------
Client connecting to 192.168.2.138, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.2.118 port 43067 connected with 192.168.2.138 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-60.0 sec 6.22 GBytes 891 Mbits/sec
root@fdas:~# ./iperf -c 192.168.2.138 -t 600
------------------------------------------------------------
Client connecting to 192.168.2.138, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.2.118 port 35506 connected with 192.168.2.138 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-600.0 sec 62.0 GBytes 887 Mbits/sec
//edit disk io benchmarks added. NOTE: this hdparm test reads in sequential order, and ultimate goal here is to be reading and writing raw bytes from a a disk (entire disk, not partition)
/dev/sdd1 on /a type ext4 (rw)
NOTE: sdd is FreeNAS iSCSI disk
root@fdas:~# hdparm -t /dev/sdd
/dev/sdd:
Timing buffered disk reads: 168 MB in 3.02 seconds = 55.71 MB/sec
root@fdas:~# hdparm -t -T /dev/sdd
/dev/sdd:
Timing cached reads: 5240 MB in 2.00 seconds = 2620.70 MB/sec
Timing buffered disk reads: 168 MB in 3.01 seconds = 55.84 MB/sec