[6.8.3 disk activities does not respect isolcpus]

It's pretty common to isolate cpus to improve performance in VMs, I don't think the user base is that small

[6.8.3 disk activities does not respect isolcpus]

So is this problem going to be ignored? It's not listed in "known issues" or something like that.

 

I tested the same hardware with Proxmox and I NEVER got random activity on cpus I had isolated to certain vms.

[6.8.3 disk activities does not respect isolcpus]

In my case I would have noticed instantly if it worked.

 

I think my server might have more activity than yours and it's super easy to spot if the isolated cores are working.

 

However, I'm not able to test this beta, I need the stability

[6.8.3 disk activities does not respect isolcpus]

56 minutes ago, testdasi said:

I can report that the syslinux fix above didn't work, unfortunately.

 

It seemed to have work but I just did a large cp and the process is hitting an isolated core.

Yeah, it didn't work at all for me either as I stated in my previous post. Let's see if the 6.9.0 beta with 5.x kernel solves it 🤞

[6.8.3 disk activities does not respect isolcpus]

You're a brave man

 

I'm eager to hear your experience on it, hope it fixes it!

[6.8.3 disk activities does not respect isolcpus]

I totally understand that and it makes sense, but I don't understand how such an obvious bug has not been reported elsewhere (that I found).

[6.8.3 disk activities does not respect isolcpus]

Is this bug going to be fixed?

This is pretty much a deal breaker to use Unraid as main server with a Windows gaming VM.

[6.8.3 disk activities does not respect isolcpus]

That kind of defeats the purpose... I can't be rebooting my server.

I would expect isolcpus to work as expected.

 

Also, my cpu usage kicks in just after reboot

[6.8.3 disk activities does not respect isolcpus]

 I tested it with:

isolcpus=5-11,17-23 nohz_full=5-11,17-23 rcu_nocs=5-11,17-23

 

But still getting the same activity on CPU-9.

 

Any idea?

[6.8.3 disk activities does not respect isolcpus]

I haven't tried, but it seems it would fix my issues since they solved it for Chess with my same CPU.

 

What do those two settings do? Any downside?

[6.8.3 disk activities does not respect isolcpus]

I created a post about this bug. I can reproduce too with R9 3900x.

[Two isolated cores are being used with their VM turned off.]

Ah yes, this appears to be the same. 

[RC-7 -> Intel Gigabit on X570 Aorus Master not working (Realtek 2.5G works fine)]

Ah I see.

 

Any reason for eth0 & eth1 to swap when updating?

[Unraid OS version 6.8.0-rc1 available]

I installed it and I wasn't able to hardlink. It said something like:

 

Cannot create hardlink: Function not implemented yet.

 

It wasn't a crash, it was a message saying it's not implemented.

 

Why does that happen? Is that going to be like that in the final release?