Hi, I setup Unraid this week after using Open Media Vault for a while. 

I have a 500/70 connection and had no problem maxing it out before using docker container for qBittorrent.

However, upon setting it up on unraid, I am unable to go much further than 20 MB/s download (not even half my max connection)

I notice very high CPU usage when downloading torrents so tried deluge instead but the same thing occurred. I used glances to have a look at IO_Wait but that stays at 0.5-1% but there is a constant warning for CPU Load when downloading torrent

I am downloading to cache and have confirmed that by looking at read and writes - no activity on array

 

The CPU I'm using is an integrated ASrock j3160 and I am aware it is not the most powerful.

 

I am completely open to upgrading, however before doing so I just wanted to check there was nothing odd going on that can be fixed as I had no problems in OMV with the same system.

 

Thanks

Try using a disk mount instead to see if it improves, e.g., instead of /mnt/user/share use /mnt/cache/share, FUSE always adds some overhead, but it can be especially noticeable with low power CPUs.

thanks so much, that has solved it. I used /mnt/cache/ and the speeds doubled.

If the files are moved to the array however, the torrent client will not be able to see them, is there something that can be done to solve this?

Not sure, maybe use another container to seed those, or get a large enough btrfs/zfs pool for torrents only.

thanks for the help. Think i'm going to upgrade my system and use this as a good reason to do so

On 4/18/2023 at 11:59 PM, JorgeB said:

Try using a disk mount instead to see if it improves, e.g., instead of /mnt/user/share use /mnt/cache/share, FUSE always adds some overhead, but it can be especially noticeable with low power CPUs.

Thanks for this 2 years later. I have a unique set up where I have 48 4TB SSDs (ZFS) on an hba in a server that was built in 2017. My performance was 1/4 of what a single SSD drive should perform at and it took me an embarrassingly long time to figure out the FUSE was the bottle neck.

I wish I could upgrade since the chassis is great (2U). Super micro is proprietary though so I can't just slap an AMD Milan generation board.

Single core performance is critical for my set up.