June 10, 201610 yr Hi guys I am using unraid as my server and it is great. I have just a question that is not a problem concerning unraid but maybe someone here has a idea of what can be happening, anyway here goes when I transfer a file to and from unraid on the network using windows PC I get 113MB/S that is great then on the same PC I tried linux distros ubuntu/mint/majaro and so and transfering same file I get 57 MB/S max, these transfers are all done using samba, I am asking cos I was considering switching my PCs to linux but this held me back. Thank you to anyone's time and thoughts
June 10, 201610 yr Community Expert How did you measure/calculate these speeds? Is the speed you quoted a copy-to or a copy-from? They will be different when using unRAID! If you are using the reported speeds from the copy utility for different operating systems, you are comparing apples to oranges. You should probably use a stop watch and even then on a copy-to you have to make sure that you are allowing for the RAM cache on the unRAID to finish the physical writes to the disks. (Some copy utilities assume that the write is finished when it finishes its transfer to the network.) File size has an impact as the time for file creation and disk space allocation will slow the apparent transfer speed.
June 10, 201610 yr Author Hi thank you so much for your reply. I tested copying from unraid to the client os, as writing to unraid is a different story cos of calculation, to see what speeds I am getting I look at the transfer window (os copy utility) and in Windows also in task manager and it reports how much MB/S it is using, example a 10gb file in windows says 1min remaining and 113MB/S In linux 3min remaining 57MB/S. Again this is not a unraid problem as I tried transfering a file from a windows machine to a linux and windows os and had same results. I am asking here just coz I know there is great help on these forums and knowledge and thought maybe someone new about this in linux os. So I understand if you don't have any replies for me,and thanks again for you help
June 10, 201610 yr Community Expert So, reading through your second post, you have three computers that you were testing with. The unRAID server, a Window computer and a Linux computer. What you found was that the download speed to the Linux computer was always slow regardless of which computer you were copying from. Next question is what is the hardware that you are testing out the linux distribution(s) on? If it is an old laptop or an ancient desktop with a PATA hard drive, you might have found your answer. Not sure if this is truly the issue but trying to help you eliminate outside causes before you say that the Linux OS itself is the issue. (I have no axe to grind here as we are strictly a Windows household if you don't count all of the 'appliances' --- modems, routers, switches, media players, TV's, Blu-ray players ---- that use Linux.)
June 10, 201610 yr Author Hi thank you again my Windows PC specs are Intel dual core 3.0Ghz G2030 and ssd Samsung evo 120Gb Laptop linux Intel I3 kingston ssd 120Gb Anyway I am sure its the linux distro as on the same laptop I re installed windows 10 and get 113MB/S
June 10, 201610 yr Author Is the Linux laptop connected via a wired connection or wireless? Cat6 and gigabit switch. I put linux on the other PC now that ran windows just to test this out and speeds on this PC also drop to 57MB/S. ran Iperf on the network and got 947 Mbits/sec, so the network is fine
Archived
This topic is now archived and is closed to further replies.