From: Mark Kettenis <mark.kettenis@xs4all.nl>
Subject: Re: sysctl cpu hz
To: "Ted Unangst" <tedu@tedunangst.com>
Cc: tech@openbsd.org
Date: Fri, 25 Apr 2025 22:22:57 +0200

> From: "Ted Unangst" <tedu@tedunangst.com>
> Date: Fri, 25 Apr 2025 15:17:56 -0400
> 
> My CPU is too fast and I have trouble counting the zeros in sysctl
> hw.sensors.
> 
> For a frequency sensor greater than 10 MHz, display in Mhz instead.
> Keep the old format when using -n, in case somebody scripted this.

I prefer consistency.  And frequency sensors are for more than just
CPU frequency.

> hw.sensors.cpu0.frequency0=650.00 MHz
> hw.sensors.cpu2.frequency0=700.00 MHz
> hw.sensors.cpu4.frequency0=650.00 MHz
> 
> Index: sysctl.c
> ===================================================================
> RCS file: /home/cvs/src/sbin/sysctl/sysctl.c,v
> diff -u -p -r1.264 sysctl.c
> --- sysctl.c	6 Apr 2025 17:36:22 -0000	1.264
> +++ sysctl.c	25 Apr 2025 19:13:43 -0000
> @@ -2751,6 +2751,7 @@ void
>  print_sensor(struct sensor *s)
>  {
>  	const char *name;
> +	double v;
>  
>  	if (s->flags & SENSOR_FUNKNOWN)
>  		printf("unknown");
> @@ -2841,7 +2842,12 @@ print_sensor(struct sensor *s)
>  			printf("%.2f%%", s->value / 1000.0);
>  			break;
>  		case SENSOR_FREQ:
> -			printf("%.2f Hz", s->value / 1000000.0);
> +			v = s->value / 1000000.0;
> +			if (!nflag && v > 10000000.0) {
> +				printf("%.2f MHz", v / 1000000);
> +			} else {
> +				printf("%.2f Hz", v);
> +			}
>  			break;
>  		case SENSOR_ANGLE:
>  			printf("%3.4f degrees", s->value / 1000000.0);
> 
>