what's got broken in bhyve after upgrade

Rodney W. Grimes freebsd-rwg at gndrsh.dnsmgr.net
Wed Nov 27 02:59:52 UTC 2019


> upgraded to
> 
> FreeBSD puchar.net 11.3-STABLE FreeBSD 11.3-STABLE #0 r354807: Fri Nov 22 
> 22:45:43 CET 2019     root at puchar.net:/usr/src/sys/amd64/compile/puchar 
> amd64
> 
> 
> i have setting hw.vmm.topology.cores_per_package=16 in loader.conf

I do not have a 11.3-STABLE reference box, but could you check
man bhyve
and see if it has the new -c options:

SYNOPSIS
     bhyve [-abehuwxACHPSWY]
           [-c [[cpus=]numcpus][,sockets=n][,cores=n][,threads=n]]


If it has that form of -c you SHOULD stop using hw.vmm.topology.cores_per_package
and start to use the new -c options.

I do not believe this feature is in 11.3, but it may of been merged.

> 
> 
> before upgrade - bhyve virtual machines (windows 7) see one CPU with 2 or 
> 4 cores (depending how much i use with -c option in bhyve).
> 
> after upgrade - bhyve sees single core CPUs. Which in case of windows 7 
> pro means no more than 2 cores will be used.
> 
> What's wrong and how to fix it?

	-c cores=4
or
	-c cores=2

Note unspecified values default to 1.  See the man page for additional details.


-- 
Rod Grimes                                                 rgrimes at freebsd.org


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