bhyve - uses 10% cpu in idle

Joined
Apr 9, 2015
Messages
1,258
If the VM is running, it would not surprise me a bit. It also depends on what cpu you are using in your FreeNAS. A Pentium G would have a lot more usage at idle than a Dual Xeon E5-2670 as one has a lot less cores and horsepower than the other.
 

Kennyvb8

Contributor
Joined
Mar 18, 2017
Messages
112
Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz
in FreeNAS 10 it used like 0.1-1% so something has changed the way bhyve works. its the same VMs I had in previous FreeNAS.
 
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nikdom

Cadet
Joined
Mar 24, 2017
Messages
6
I have the same problem.
Code:
34042 root			14  20	0  5185M  1215M kqread  1  25.9H  32.58% bhyve
34347 root			14  20	0  2113M  1043M kqread  3  25.8H  26.64% bhyve
34235 root			13  20	0  1087M   657M kqread  0  26.2H  26.43% bhyve


CPU is a Intel(R) Atom(TM) CPU C2550 @ 2.40GHz.

Happenes only since the last upgrade to version FreeNAS-11.1-RELEASE.

Did anyone find the root cause for this?
 

MartinHerrman

Dabbler
Joined
Jan 5, 2018
Messages
18
Today I installed my first bhyve VM on FreeNAS 11.1. The VM is a very light one, running pihole on ubuntu 16.04 server. When using 'top' I also see that the VM is constantly using 10%.

I cannot compare with previous FreeNAS versions. My system is a 16GB RAM, Intel C2550, 3 disks.

Maybe you could create a bug report?
 

Kennyvb8

Contributor
Joined
Mar 18, 2017
Messages
112
Hmm but in FreeNAS 10 it used 0.1-1% so what changed?

Where do I make a Bug report?


Sent from my iPhone using Tapatalk
 
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nikdom

Cadet
Joined
Mar 24, 2017
Messages
6
no change with FreeNAS-11.1-U1.
btw. i cannot access the bug, maybe i was searching at the wrong place. could you provide the full link here? thank you!
 

Kennyvb8

Contributor
Joined
Mar 18, 2017
Messages
112
no change with FreeNAS-11.1-U1.
btw. i cannot access the bug, maybe i was searching at the wrong place. could you provide the full link here? thank you!

Yea i see No change aswell.
A moderator changed it to private Bug. Because of debug info from My server
 

corv

Dabbler
Joined
Jul 31, 2014
Messages
25
Same issue here, unusually high CPU usage for idle bhyve VM.
 

MartinHerrman

Dabbler
Joined
Jan 5, 2018
Messages
18
Issue still exists for me with 11.1-U4.

I am not allowed to read the created bug report, maybe because it contains personal data from Kenny.
 

tslw

Dabbler
Joined
Jun 17, 2011
Messages
39
I am seeing the same issue with 11.2-U1. bhyve takes 10-20% of the cpu (whereas the programs in the VM take just a few percent in the VM).
Also middlewared is using a log of CPU.

Any news on the private bug report?
 
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