Hello! New and very happy unRaid user here with some sudden and confusing transfer speed issues;

 

I have confirmed 1Gbps speed capability over my network via Ethernet from my main computer to my unRaid server. I have the main share set to "yes" for "use the cache disk" and in the past have had no issue getting 100-120 MB/s transfer speeds for small and large files but as of a few days ago I have been unable to get over 20. I do have a VPN enabled on my main computer but the speeds don't seem to change when it's on or not (should a VPN effect local network transfer routes?). Transferring files back from the unRaid server I get full 100+ MB/s transfer rates. 

 

Strangely enough, as I was about to post this I just did a new transfer test and am now getting full speeds. What's going on here? I have nothing else running on my server besides Plex (which is not in use atm).

 

Thanks for any help,

serenity-diagnostics-20180203-1048.zip

perhaps you were sending files to a non cached share.

Possibly flaky ethernet cable/port connection. If one wire isn't making good contact GB will often degrade to 100MB.

I see you have the trim plugin installed but make sure it's schedule to run regularly, like everyday.

1812 - I only use one share atm, so that's not it.

 

trurl - That was an issue when I built the server but I swapped them out and haven't had any issues with transferring back to the main computer

 

johnnie - Ok, I just changed that to daily - what exactly does that do for me?

 

Thanks for the quick replies, folks!

8 minutes ago, voicelex said:

what exactly does that do for me?

It trims the SSD, most untrimmed SSDs will have degraded write performance.

 

You can run a manual trim now to see if it makes any difference:

 

fstrim -v /mnt/cache

 

Awesome, thanks! I am now getting full speeds again but I will do a trim and continue to monitor the intermittent issue.

Edited February 3, 20188 yr by voicelex

Strangely I'm back to slow speeds again, anyone have any other thoughts?

 

Also, as an aside - would having my VPN enabled change the path of LAN transfers? I'm worried they're leaving my network and wasting bandwidth. 

I think the change in transfers speeds seems to be due to my windows machine's storage (not OS) HDD being so full! If I transfer from one of my other drives to the unRaid box it writes at proper speeds. Is this really the cause? It seems to be through testing.

19 hours ago, voicelex said:

I think the change in transfers speeds seems to be due to my windows machine's storage (not OS) HDD being so full! If I transfer from one of my other drives to the unRaid box it writes at proper speeds. Is this really the cause? It seems to be through testing.

 

If you let NTFS partitions go completely full, new files created on the NTFS partition can be split into a huge number of file fragments which means the read speed will be extremely low when trying to copy the files. The solution to this is to defragment the NTFS paritions. Just that you often need to reduce the amount of files on the drive before the defragment program will like to process the disk - it takes free space for the program to be able to move around all the file fragments and align them side-by-side.

Yeah, I unloaded several hundred gig, did a defrag and things seem much nicer - woo! So happy to have sorted this all out, thanks folks!