FreeBSD 11.x thread creation time is 9000+ microseconds on Intel Xeon Gold series CPU

[Guido Falsi]

On 06/11/18 10:01, Steevan Rodrigues wrote:
> Ok. Sorry about that.  Again I have attached that test program as a tar
> file. I am not sure whether even this gets stripped by mailing list
> software.
> 
> Anyway here is the program given below.
> 

I'm not a kernel guy or an expert in such things, but I see that
flamegraphs are often used to analyze such issues. It gives an idea
where the kernel is actually spending it's time.

There's also a port to help with this:

https://www.freshports.org/benchmarks/flamegraph/

I think if you could gather such information and make it available you'd
make it easier for experts to explain what is happening and maybe also
do something about this.

-- 
Guido Falsi <mad at madpilot.net>