Radarr using a lot of CPU constantly (Synology NAS)

[BladesKnight]

Installed the latest available version (0.2.0.778) and now Radarr is constantly using about 25% of CPU. Activity monitor on Synology just says that its "Main" using up the CPU resource.

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Radarr Version: 0.2.0.778

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[galli-leo]

What version of mono are you using?

[BladesKnight]

I have 2 instances of Mono running and I don't know which one it's using..
Synocommunity's 4.6.2.7-8 and Xamarin's 4.6.2-0095.

[galli-leo]

@BladesKnight Can you try upgrading your mono version to 4.8 or 5.0? Someone else saw a big decrease in CPU usage.

[BladesKnight]

There are no synology packages for version 4.8 or 5.0. What I have is the latest available.

On 26 Jun 2017, at 17:32, Leonardo Galli [e-mail] wrote:

@BladesKnight Can you try upgrading your mono version to 4.8 or 5.0? Someone else saw a big decrease in CPU usage.

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[wvkreg]

I use Mono 4.6.2.7-8 with Radarr in Docker container version Radarr Ver. 0.2.0.778
Still CPU usage spikes sometimes but is not constantly high.

[BladesKnight]

Have upgraded to Mono 5.0.1.1 and running Radarr 0.2.0.778 in Docker and CPU is still relatively high hovering at 20-25%.

Noticed the same in Sonarr but they seem to have fixed it in their latest version 2.0.0.4949 with a "Fixed : Regression in http redirect logic causing failed grabs and >25% cpu usage."

Maybe the same thing is affecting Radarr?

[galli-leo]

I will try to pull that change into Radarr

[jj-uk]

Did this change make it into Radarr? I'm seeing mono using 100% CPU constantly..

[jj-uk]

Has anything canged on this? Still 100% CPU usage. Can't run radarr at all as mono wants the whole CPU!

[Ritte88]

Comfirming this is still a problem, luckily me I run a dual-xeon server but I rather still it fixed.

[jj-uk]

Appears to have been fixed for me on FreeNAS in version 0.2.0.910. Thank you.

[jaimevisser]

The current linuxserver.io docker image reproduces this behaviour nicely. Running it on ubuntu 17.10 with latest docker-ce.

[fraenkDUS]

Same problem here with linuxserver.io docker/latest on Synology and Radarr 0.2.0.980

[galli-leo]

Finally got around to pull in those changes from Sonarr, maybe it will help (new release in a few hours).

[Nightmarel33t]

has there been any update on the high CPU usage my mono sits there constantly at 30%

[Nightmarel33t]

thats on version 0.2.0.995 -

[galli-leo]

@Nightmarel33t What system are you running and was Radarr actively doing something, e.g. RSS Sync updating info, etc.?

[Taymurf]

I am having the same issue on my Synology DS918+ with radarr in docker, I'm using the Linuxserver image and I have 2 processes of mono running for about 20-30% CPU each at all times. My idle CPU usage right now is 60%.

[galli-leo]

@Taymurf Are both mono processes from the same docker? Because Radarr should only use one. Also what's the size of your log db like? And how many movies do you have?

[Taymurf]

I believe that one of the mono processes is from sonarr and one is from radarr (both programs running in docker) but when I stop sonarr the CPU stays up and when I stop radarr they both go down. I do also have dockers for deluge, jackett and hydra but I'm not sure if those have any effect since the docker overview shows minimal usage by them. Here is a screenshot of my config file for radarr including sizes.

I remade the radarr container and it does seem to have helped quite a bit (at least for the last 10 minutes) so I'm wondering if something got stuck in a loop in the container that got fixed when I remade it? I used the same image in both containers.

[galli-leo]

@Taymurf Could it be, that you weren't on the latest version? Because I added a fix for high cpu usage in the latest version.

[Taymurf]

You are absolutely correct, it has much improved since. Thank you for the great program and all your hard work!