Re: KTLS thread on 14.0-RC3

> On Oct 30, 2023, at 12:09 PM, Zhenlei Huang <zlei@FreeBSD.org> wrote:
> 
> 
> 
>> On Oct 29, 2023, at 5:43 PM, Gordon Bergling <gbe@freebsd.org> wrote:
>> 
>> Hi,
>> 
>> I am currently building a new system, which should be based on 14.0-RELEASE.
>> Therefor I am tracking releng/14.0 since its creation and updating it currently
>> via the usualy buildworld steps.
>> 
>> What I have noticed recently is, that the [KTLS] is missing. I have a stable/13
>> system which shows the [KTLS] thread and a very recent -CURRENT that also shows
>> the [KTLS] thread.
>> 
>> The stable/13 and releng/14.0 systems both use the GENERIC kernel, without any
>> custom modifications.
>> 
>> Loaded KLDs are also the same.
>> 
>> Did I miss something, or is there something in releng/14.0 missing, which
>> is currenlty enabled in stable/13?
> 
> KTLS shall still work as intended, the creation of it threads is deferred.
> 
> See a72ee355646c (ktls: Defer creation of threads and zones until first use)
>> Run ktls_init() when the first KTLS session is created rather than
>> unconditionally during boot.  This avoids creating unused threads and
>> allocating unused resources on systems which do not use KTLS.
> 
> ```
> -SYSINIT(ktls, SI_SUB_SMP + 1, SI_ORDER_ANY, ktls_init, NULL);
> ```

Seems 14.0 only create one KTLS thread.

IIRC 13.2 create one thread per core.

> 
>> 
>> Any help for getting an insight on this would be much appreciated.
>> 
>> --Gordon
> 
> 
> Best regards,
> Zhenlei