HyperThreading CPU's

[Evren Yurtesen]

if both cpu's are enabled, you will see a C column in top command.
It comes to me between STATE and TIME,
Also you can see which process is using which cpu etc.

   PID USERNAME PRI NICE  SIZE    RES STATE  C   TIME   WCPU    CPU COMMAND

Marius M. Rex MARIUS wrote:

> In my fairly recent version of the UPDATING file for 4.9-stable it states
> that I have to use sysctl to modify the value of 'machdep.hlt_logical_cpus' to
> '0' to get all of my logical CPU's enabled under hyperthreading.
> 
> Is this change still necessary?  sysctl spits that oid out as unknown
> when I try to look at it. I do have similar oids but nothing that matches that
> value precisely:
> 
> machdep.cpu_idle_hlt: 1
> machdep.smp_cpus: 2
> machdep.hlt_cpus: 0
> 
> Basically I have one CPU that is recognized as 2 CPUs by the kernel.  I
> know that works as it appears in my dmesg.  I just want to know if there
> is anything else I need to do to make sure both logical CPUs are available
> for use.
> 
> 
> -Marius M. Rex
> System Admin
> Community Connect Inc.
> marius at mail.communityconnect.com
> 
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