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Sonarr in Docker has much worse performance and responsiveness than when installed on bare metal

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Everything works, but is much less responsive. Scrolling through my list of shows is very chunky and constantly hitches as it loads in the new artwork as I scroll. Searches take forever both searching indexers and just the "Add New" search. Scanning/importing is also super slow. I should say this is the same for Radarr as well

Before I switch back to just installing it natively on my server is there anything I can try to improve responsiveness in docker?

Specs:

i5-4570

8GB 1600mhz DDR3

Quadro p400

Ubuntu 20.04

OS and Docker are on SSD. Media on HDD's

Thanks!

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No issues here. Is the persistent data volume on an NFS mount by any chance?

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Nope :( ya it seems like it works well for pretty much everyone which is what made me start thinking I must be doing something wrong here or there's some setting i missed or something. hardware's getting a bit old but for this kind of thing I figured it should be plenty

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Using compose? Do you got any logs?

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I have a full *arr stack in docker running off of an SD Card in a Raspberry Pi 8gb 4+ feeding downloaded data to a Synology NAS from which a Plex Media Server gets data on an NVIDIA Shield Pro.

The Sonarr GUI is incredibly responsive, no complaints at all. The only thing that I noticed is when Sonarr is searching indexers for a release it bogs down IO speeds and the network, but it’s only temporary.

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I had something like this happen to me recently.

Turns out, that I never cleaned up my old files (using docker-compose to keep the images up to date) and my SSD mounted as root (/) was nearly full.

SSDs become much slower when they are nearly full.

Should this be the case, try running "docker system prune" (but make sure that all the docker-images you want to keep are running).

This will get rid of all the unused stuff docker is saving. (Old docker-images, old volumes, etc.)

First time I ran this it freed up over 30 GB (which was a lot considering my / only has a 70 GB partition since I separated / from /downloads which is also on the SSD).

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Something else that can make docker slow to respond is if it does a lot of searching in parallel.So if you bulk-add some 300ish shows (like me after setting it up) and set them to search for upgrades (like they are in 720p and sonarr looks for 1080p) automatically.

I had this problem after a defective SSD a few years back when I had to reindex everything.

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Otherwise try running top on your server and check if there is some process clogging your CPU and or Memory.

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Otherwise: I am running basically the same setup as you (Ubuntu 20.04 LTS, same amount of RAM and my i5 is even a generation older than yours) and it rarely makes any problems.

And that after a few OS-Upgrades (installed as 16.04 LTS originally)

Although my SSD is getting more and more difficult to keep enough free space - already dreading a reinstall, although it should go fairly smooth since I keep all my docker-volumes in one place and have next to nothing directly running on the mashine :)