[9front] Re: Rio on cpu|Share files to unix on terminal

[adr@SDF.ORG]

On Wed, Jun 02, 2021 at 01:56:06AM +0000, adr@SDF.ORG wrote:
> Hi,
> I have a terminal configured (rpi4) and I want to shared a file
> system with another unix machine. I changed the service to cpu and
> configured it to start rio, mounting the draw device and mouse first.
> 
> All good but after creating some windows, rio will go crazy, windows
> will be resized randomly and the display will not represent the
> contents of the windows anymore.
> 
> The console message when the party starts is
> 
> rio: setname failed: unknown id for draw image
> 
> If one is able to kill rio you can start it again and all will be
> normal until the mess starts again.
> 
> It puzzled me because I'm pretty sure I had this very same issue
> the last time I used 9front a lot of years ago on a pc.
> 
> I would appreciate if someone points me to a reason of this behavior.
> 
> Regards,
> adr.

After following the boot process it's clear that the constrains are in the kernel,
I suppose is here /sys/src/9/bcm/main.c#245
	if(!cpuserver)
		/*
		 * give terminals lots of image memory, too; the dynamic
		 * allocation will balance the load properly, hopefully.
		 * be careful with 32-bit overflow.
		 */
		imagmem->maxsize = kpages;

Instead of changing the service variable on bootargs and configuring the cpuserver to run rio,
I'll configure the terminal to run the cpu services.

Just in case someone is thinking about this.