Ti133700N Posted July 10, 2017 Share Posted July 10, 2017 (edited) Hey guys, yesterday I noticed the fans in the server started spinning up and down at regular intervals, so I looked at UnRaid's System Stats and saw that the CPU was spiking up every 8 seconds. From the dashboard, in the System Status, I can see that every 8 seconds, a random thread spikes to 100% usage and then goes down to 0%. All the VMs are shutdown, and I also tried disabling Dockers completely but I am still getting the same result. I also tried SSHing to the server and looking at "top", but I didn't see anything super suspicious, although I might need help on that front. What steps should I take to debug this issue and determine what is the cause of those spikes (I assume that's not "normal") ? Thanks ! Edited July 10, 2017 by Ti133700N Quote Link to comment
tdallen Posted July 10, 2017 Share Posted July 10, 2017 Do you have htop? You can sort it by CPU usage. Quote Link to comment
Ti133700N Posted July 10, 2017 Author Share Posted July 10, 2017 Thank you for the reply. I just found the source of the problem. Since I first noticed the issue yesterday, I thought it might have been a recent change in my UnRaid settings. So I remembered watching Gridrunner's latest video and installed a few plugins as a result in order to try to optimize my setup. After disabling Dynamix Cache Directories, CPU usage went back to normal. Not sure if it's supposed to behave that way, but in my case I don't want my fans ramping up and down every 8 seconds because of CPU usage spikes, so I'll leave it off for now and maybe I'll check with Dynamix later on to see why this is happening. Thanks ! Quote Link to comment
JorgeB Posted July 11, 2017 Share Posted July 11, 2017 That only happens if you set "Scan user shares" to enable, default is disable and it should be left like that. Quote Link to comment
bonienl Posted July 11, 2017 Share Posted July 11, 2017 I also recommend to select the included or excluded folders for caching and avoid overwhelming the memory. Quote Link to comment
Ti133700N Posted July 11, 2017 Author Share Posted July 11, 2017 7 hours ago, johnnie.black said: That only happens if you set "Scan user shares" to enable, default is disable and it should be left like that. Scan user shares is disabled, here is what happens when I re-enable the plugin with the option set to "No". Maybe I absolutely need to select at least one "Included folder" ? Quote Link to comment
JorgeB Posted July 11, 2017 Share Posted July 11, 2017 12 minutes ago, Ti133700N said: Maybe I absolutely need to select at least one "Included folder" ? I've only seen those spikes with scan users shares enable, and I don't use included or excluded folders. Quote Link to comment
xrqp Posted April 15, 2023 Share Posted April 15, 2023 I have similar problem with CPU spikes. post about my problem Is this topic marked SOLVED because the solution is disabling Dynamix Cache Directories? Quote Link to comment
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