Huge CPU usage spikes even though nothing's happening

I’m experiencing a weird issue with NZBDrone. A few minutes ago, the rsssync just finished and my laptop was a little bit laggy. I noticed that the cpu usage of nzbdrone was way higher that it should normally be (well over 40 %), even though nothing was going on, no search, no sync, nothing. This has happened to me quite often over the past few days, but I can’t figure out the reason for a suchn an odd behavior.

The log just said the following:

13-12-11 10:47:29.0|Info|DownloadDecisionMaker|Processing 300 reports
13-12-11 10:50:48.7|Info|RssSyncService|RSS Sync Completed. Reports found: 300, Reports downloaded: 0
13-12-11 10:51:19.1|Warn|DownloadedEpisodesImportService|Drone Factory folder is not configured
13-12-11 10:53:19.4|Warn|DownloadedEpisodesImportService|Drone Factory folder is not configured
13-12-11 10:55:16.4|Warn|DownloadedEpisodesImportService|Drone Factory folder is not configured
13-12-11 10:57:39.1|Warn|DownloadedEpisodesImportService|Drone Factory folder is not configured
13-12-11 10:59:47.5|Warn|DownloadedEpisodesImportService|Drone Factory folder is not configured
13-12-11 11:00:48.0|Warn|DownloadedEpisodesImportService|Drone Factory folder is not configured
13-12-11 11:02:57.0|Warn|DownloadedEpisodesImportService|Drone Factory folder is not configured

I didn’t set a drone factory folder because I didn’t want nzbdrone messing around with my downloads (I’m using filebot for that). Could that be the reason? I also experienced that one I open multiple shows simultaneously, nzbdrone somehow shuts down. Even though I start a search for just one episode, nothing happens. Opening just one show in one browser tab avoids that result, but I’m still a little bit confused as to how why drone somehow freezes.

What version of drone?
What OS?

The crashing sounds like an issue we have been seeing when drone is doing a lot of background work, but that seems to only happen under mono (non-Windows).

As for the CPU spike, its not uncommon for it to spike when doing an RSS Sync, but not having the drone factory configured shouldn’t matter, it’ll run to check for downloads, see its not set and then move on.

Drone Version: 2.0.0.995
OS; Windows 7 64 bit

The strange thing about the CPU spiek is, that drone isn’t doing anything. The RSS Sync already happened and it wasn’t checking the series either. That’s what made my wonder about why it slows down my laptop even though it’s apparently not doing a thing…

Enable trace logging, not a lot of information is logged when on info, trace should give an idea as to what is happening during a spike.

I’m gonna give it a try and let you know what got logged. :slight_smile: