ideasman69 Posted April 11, 2019 Share #1 Posted April 11, 2019 (edited) Hi guys.. Whats the go with slowish network file transfers? If i do an iperf in each direction from the nas to my study PC - it maxes out the connection. NAS as the server: $ ./iperf3_3.1.3 -s ----------------------------------------------------------- Server listening on 5201 ----------------------------------------------------------- Accepted connection from 192.168.1.101, port 49554 [ 5] local 192.168.3.2 port 5201 connected to 192.168.1.101 port 49555 [ ID] Interval Transfer Bandwidth [ 5] 0.00-1.00 sec 108 MBytes 907 Mbits/sec [ 5] 1.00-2.00 sec 112 MBytes 942 Mbits/sec [ 5] 2.00-3.00 sec 113 MBytes 944 Mbits/sec [ 5] 3.00-4.00 sec 112 MBytes 943 Mbits/sec [ 5] 4.00-5.00 sec 112 MBytes 943 Mbits/sec [ 5] 5.00-6.00 sec 112 MBytes 941 Mbits/sec [ 5] 6.00-7.00 sec 112 MBytes 940 Mbits/sec [ 5] 7.00-8.00 sec 112 MBytes 942 Mbits/sec [ 5] 8.00-9.00 sec 112 MBytes 941 Mbits/sec [ 5] 9.00-10.00 sec 112 MBytes 942 Mbits/sec [ 5] 10.00-10.04 sec 4.68 MBytes 938 Mbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth [ 5] 0.00-10.04 sec 0.00 Bytes 0.00 bits/sec sender [ 5] 0.00-10.04 sec 1.10 GBytes 938 Mbits/sec receiver Windows 10 machine as the server: iperf3.exe -s ----------------------------------------------------------- Server listening on 5201 ----------------------------------------------------------- Accepted connection from 192.168.3.2, port 33770 [ 5] local 192.168.1.101 port 5201 connected to 192.168.3.2 port 33772 [ ID] Interval Transfer Bandwidth [ 5] 0.00-1.00 sec 108 MBytes 905 Mbits/sec [ 5] 1.00-2.00 sec 112 MBytes 942 Mbits/sec [ 5] 2.00-3.00 sec 112 MBytes 938 Mbits/sec [ 5] 3.00-4.00 sec 112 MBytes 942 Mbits/sec [ 5] 4.00-5.00 sec 112 MBytes 939 Mbits/sec [ 5] 5.00-6.00 sec 111 MBytes 933 Mbits/sec [ 5] 6.00-7.00 sec 112 MBytes 942 Mbits/sec [ 5] 7.00-8.00 sec 112 MBytes 942 Mbits/sec [ 5] 8.00-9.00 sec 112 MBytes 940 Mbits/sec [ 5] 9.00-10.00 sec 112 MBytes 942 Mbits/sec [ 5] 10.00-10.04 sec 4.09 MBytes 939 Mbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth [ 5] 0.00-10.04 sec 0.00 Bytes 0.00 bits/sec sender [ 5] 0.00-10.04 sec 1.09 GBytes 936 Mbits/sec receiver Running a dd benchmark on the RAID array shows plenty of write speed: dd if=/dev/zero of=test bs=512M count=4 conv=fdatasync oflag=direct 4+0 records in 4+0 records out 2147483648 bytes (2.1 GB) copied, 9.32972 s, 230 MB/s but when transferring files over the network, these are the kinda numbers i get: And it's not my PC either - as when i copy to/from the PC to my laptop, both NICs are maxed out at 112MB/s The hardware: Gigabyte-GA B85M-HD3G (onbaord intel nic) i5 4570S 8GB DDR3 4 x 4TB in SHR, BTRFS Latest 918 bootloader, latest DSM I've tried each of the SMB version settings in DSM - none make a difference. I have a feeling i had faster transfers when i was using a 3615 loader and EXT4. I can't image it's an issue with the CPU as the CPU load doesn't go up when transferring to or from. Any ideas?? Edited April 11, 2019 by ideasman69 Quote Link to comment Share on other sites More sharing options...
rvmeush Posted May 2, 2019 Share #2 Posted May 2, 2019 Just a quick observation on the info you posted - the bandwidth listed in the iperf3 test seems to be megabits per second (Mbits) while the info shown in your graph seems to be megabytes per second (MB/s). Quote Link to comment Share on other sites More sharing options...
ideasman69 Posted May 2, 2019 Author Share #3 Posted May 2, 2019 (edited) 26 minutes ago, rvmeush said: Just a quick observation on the info you posted - the bandwidth listed in the iperf3 test seems to be megabits per second (Mbits) while the info shown in your graph seems to be megabytes per second (MB/s). it kinda has both. the interval on the left is in exact seconds, the transfer column is how many MBytes were transferred in that second - ie 112MBytes / sec anyway - after moving back to DSM 6.1 and EXT4, speeds have gone back to full speed: Edited May 2, 2019 by ideasman69 Quote Link to comment Share on other sites More sharing options...
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