APD189 Posted March 18, 2020 Share Posted March 18, 2020 Hi All... I'm very new to Unraid. I've got 6.8.3 installed and I've bonded eth0 and eth1 (802.3ad) (each 1gb). I've setup 4 disk (3-disks for data, 1-disk for parity) and 1 nvme for cache. I'm having issue with write speeds. I'm only getting a max of 46MB/s on writing data to my test share. This speed is constant. I can write from a VM to my PC and get over 100MB/s. I've also tried setting up a 10GB network card connecting to my VM and there I'm getting 280 MB/s constant. I've already changed "Tunable (md_write_method)" to reconstruct write and I didn't see any changes. Please let me know what else you need from me so that I can get this issue resolved. Thanks Quote Link to comment
trurl Posted March 18, 2020 Share Posted March 18, 2020 Go to Tools - Diagnostics and attach the complete diagnostics zip file to your NEXT post. Quote Link to comment
APD189 Posted March 18, 2020 Author Share Posted March 18, 2020 Hi @trurl Here is the Diagnostics unraid-1-diagnostics-20200317-1757.zip Quote Link to comment
JorgeB Posted March 18, 2020 Share Posted March 18, 2020 Good to run iperf first to rule out any network issue. Quote Link to comment
APD189 Posted March 18, 2020 Author Share Posted March 18, 2020 (edited) Thank you @johnnie.black. I just ran iperf3 on it and I found my issue. I had a brain fart and realized that i had to go through my router since it was on a different vlan (unraid to servers). I changed the IP address and it now is transferring at over 100 MB/s. Although...the 10GB network (direct connect) is not getting the write speeds like what iperf3 is showing: [ ID] Interval Transfer Bandwidth [ 4] 0.00-1.00 sec 606 MBytes 5.08 Gbits/sec [ 4] 1.00-2.00 sec 531 MBytes 4.45 Gbits/sec [ 4] 2.00-3.00 sec 590 MBytes 4.95 Gbits/sec [ 4] 3.00-4.00 sec 508 MBytes 4.26 Gbits/sec [ 4] 4.00-5.00 sec 540 MBytes 4.53 Gbits/sec [ 4] 5.00-6.00 sec 516 MBytes 4.33 Gbits/sec [ 4] 6.00-7.00 sec 538 MBytes 4.52 Gbits/sec [ 4] 7.00-8.00 sec 503 MBytes 4.22 Gbits/sec [ 4] 8.00-9.00 sec 541 MBytes 4.54 Gbits/sec [ 4] 9.00-10.00 sec 407 MBytes 3.41 Gbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bandwidth [ 4] 0.00-10.00 sec 5.16 GBytes 4.43 Gbits/sec sender [ 4] 0.00-10.00 sec 5.16 GBytes 4.43 Gbits/sec receiver iperf Done. File transfer is going at 283 MB/s. Any idea on that? (it's not all that bad after all) Edited March 18, 2020 by APD189 Quote Link to comment
JorgeB Posted March 18, 2020 Share Posted March 18, 2020 There's always some overhead on transfers, normal to get a little less than iperf on real world, most important IMHO are the lowish iperf results, when all is optimal you should get close to line speed on iperf. Quote Link to comment
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