System Interrupts High Cpu Windows Server 2016

I am facing the following issue with windows server 2016 and perhaps xenserver. I have 2 windows server 2016 file servers on the following xenserver versions. Currently we are running xen server 7 2 up to hotifx no.

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This irc will assign a specific interrupt line for 32bit there are 32interrupt lines so one of the line would service the request.

System interrupts high cpu windows server 2016. An interrupt alerts the processor to a high priority condition requiring the interruption of the current code the processor is executing. I have a server running 2008 r2 standard that s cpu usage is constantly spiking out at 100. High cpu usage with system interrupts. On both hosts i have high system interrupts those system interrupts consume 40 cpu and makes the server very slow.

Your system is on a mechanical drive. Vm s are all running windows server 2016 standard. Using process explorer it looks like it may be the system process this thread in particular. But i don t see high system interrupts system is only using 1.

10 hotfix 11 and 12 not patched yet. System interrupts average is at 25 cpu usage almost constantly. However the usage decreases when the task manager is opened. This issue occurs because of high spin lock contention in a highly concurrent system.

From the explorer call stack. It is runnning a search displaying a search result. I login and see massive spikes to 100 on the cpu and the server freezes for about a good 30 60 seconds. 7 0 almost up to date missing xs70e040 and 7 1cu1 up to date.

I looked at the processes and it appears that system interrupts is the problem. How to fix high cpu usage caused by system interrupts. When you plug in any hardware mother board uses interrupt controller irc to multiplex the interrupts to the processor which means these hardware devices cannot directly talk to the processor. Calling methods in windows storage search btw.

I have never experienced this issue before and any suggestions on how to fix this would be great. Today however users complain the the server is extremely slow. The performance of your system will never be optimal. Icons on desktops disappear and come back.

The article quotes wikipedia for a proper definition of system interrupts. In these operating systems multiple cpu threads are competing for resources and spinning for an extended interval while they run in a loop periodically to determine whether the resource is available instead of immediately yielding. On opening the task manager the system interrupt is visible for a few seconds and then the cpu usage goes down.