Re: assertion "lp_max >= core_max" failed

[Christof Meerwald <cmeerw%cmeerw.org@localhost>]

On Sun, Sep 22, 2024 at 03:57:59PM +0200, Christof Meerwald wrote:
> On Sun, Sep 22, 2024 at 01:08:21PM -0000, Michael van Elst wrote:
> > Wouldn't that tell that we only have 1 core / 1 thread ?
> 
> I am not sure - I am currently running NetBSD with that change and it
> has 2 CPU cores assigned and the 2 cores show up in /proc/cpuinfo and
> in dmesg:
> 
> [     1.000004] cpu0 at mainbus0 apid 0
> [     1.000004] cpu0: Use lfence to serialize rdtsc
> [     1.000004] cpu0: Intel(R) Xeon(R) CPU E5-2690 v4 @ 2.60GHz, id 0x406f1
> [     1.000004] cpu0: node 0, package 0, core 0, smt 0
> [     1.000004] cpu1 at mainbus0 apid 1
> [     1.000004] cpu1: Intel(R) Xeon(R) CPU E5-2690 v4 @ 2.60GHz, id 0x406f1
> [     1.000004] cpu1: node 0, package 1, core 0, smt 0

BTW, now setting lp_max = core_max in this case and now I get:

[     1.000004] cpu0 at mainbus0 apid 0
[     1.000004] cpu0: Use lfence to serialize rdtsc
[     1.000004] cpu0: Intel(R) Xeon(R) CPU E5-2690 v4 @ 2.60GHz, id 0x406f1
[     1.000004] cpu0: node 0, package 0, core 0, smt 0
[     1.000004] cpu1 at mainbus0 apid 1
[     1.000004] cpu1: Intel(R) Xeon(R) CPU E5-2690 v4 @ 2.60GHz, id 0x406f1
[     1.000004] cpu1: node 0, package 0, core 1, smt 0

Maybe that's actually slightly better.


Christof

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