RPi4b 13.0-Current, big performance hit with HDMI connected

[Andy McClements]

On 03/01/2021 18:58, Andy McClements wrote:
> This may not be news to folks around here but it suprised me.
>
> I was just doing some very quick performance checks having got my RPi4b
> to boot from SSD. I wanted to verify CPU frequency scaling was working
> so did a quick net and disk throughput check.

APOLOGIES - AGAIN !

The discrepancy I saw, was due to the kernel cpufreq module being 
loaded, but powerd not enabled, by default, in this build.

I had done a 'powerd -v' in a shell in one case, but not the other, so 
one set of results were at 600MHz, the other at 1500MHz.

Doh !