mikeyosm Posted December 7, 2018 Share Posted December 7, 2018 (edited) Hello TR4 2950x UNRAID: 6.6 10gb local vNIC br0 (mtu 1500) 1gb NIC physical Win10 VM 1809 (6 cores/12 threads) SMB Share: Array Disk 1 nvme (contains appdata and downloads share) - Tunable DirectIO set to yes. iperf tests from VM to UNRAID host benched in excess of 10gb/s (no issues there then) w10 VM nvme drive passed through (benched 3Gb/s) unraid smb share on nvme drive (benched 2Gb/s) Tests performed: 1.) Copy 4Gb file from SMB share to W10 VM (avg 300Mb/s) WHY? 2.) Copy 4Gb (different file) from VM to SMB share (avg 1Gbs/s) Expected. Only copy sessions from SMB to the VM are 50% slower than the other way (VM to SMB share). I also ran iperf tests in both directions: VM to HOST: FAST [ 4] 5.00-6.00 sec 261 MBytes 2.18 Gbits/sec [ 6] 5.00-6.00 sec 204 MBytes 1.71 Gbits/sec [ 8] 5.00-6.00 sec 282 MBytes 2.36 Gbits/sec [ 10] 5.00-6.00 sec 248 MBytes 2.08 Gbits/sec [ 12] 5.00-6.00 sec 259 MBytes 2.17 Gbits/sec [ 14] 5.00-6.00 sec 202 MBytes 1.69 Gbits/sec [ 16] 5.00-6.00 sec 257 MBytes 2.15 Gbits/sec [ 18] 5.00-6.00 sec 199 MBytes 1.67 Gbits/sec [ 20] 5.00-6.00 sec 278 MBytes 2.33 Gbits/sec [ 22] 5.00-6.00 sec 242 MBytes 2.03 Gbits/sec [SUM] 5.00-6.00 sec 2.37 GBytes 20.4 Gbits/sec HOST to VM: 50% SLOWER than VM to HOST [ 14] 0.00-10.00 sec 1.15 GBytes 990 Mbits/sec 26 sender [ 14] 0.00-10.00 sec 1.15 GBytes 989 Mbits/sec receiver [ 16] 0.00-10.00 sec 1.10 GBytes 944 Mbits/sec 34 sender [ 16] 0.00-10.00 sec 1.10 GBytes 943 Mbits/sec receiver [ 18] 0.00-10.00 sec 1.14 GBytes 979 Mbits/sec 26 sender [ 18] 0.00-10.00 sec 1.14 GBytes 977 Mbits/sec receiver [ 20] 0.00-10.00 sec 1.09 GBytes 936 Mbits/sec 32 sender [ 20] 0.00-10.00 sec 1.09 GBytes 935 Mbits/sec receiver [ 22] 0.00-10.00 sec 1.12 GBytes 965 Mbits/sec 33 sender [ 22] 0.00-10.00 sec 1.12 GBytes 964 Mbits/sec receiver [SUM] 0.00-10.00 sec 11.2 GBytes 9.65 Gbits/sec 322 sender [SUM] 0.00-10.00 sec 11.2 GBytes 9.63 Gbits/sec receiver It's like the file transfer from UNRAID to VM is over the 1Gb interface and transfer from VM to UNRAID is over the 10Gb virtual interface br0. It seems also that If I transfer large files from another SSD in the unassigned devices pool, I don't have any speed issues. Only when transferring between the Array disk and a VM. Any ideas? Edited December 7, 2018 by mikeyosm Quote Link to comment
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