Thread: How to reduce CPU utilization

Originally Posted by BlackStealth

My fusion brain only controls outputs (relays) and I noticed on my computer there is some heavy CPU utilization by fusion brain (~50% on an AMD XP2200) and I believe this is because it is constantly monitoring the inputs. What can I do to reduce this since I do not need to monitor the inputs? Perhaps change the sampling rates? Change the taskpriority?

The best way is to lower the rate at which it samples. The lower the rate, the lesss CPU utilization.

In the skin file the lines:

Code:

  #ANIMATIONINTERVAL#50
  #ANALOGUEINTERVAL#30

change the timer values. They are both in milliseconds before the next update. So with an ANIMATIONINTERVAL of 50, every 50mS it will send the state of the outputs. You can probably change this to 100mS to 250mS. And for analogue interval, right now it tries to read every 30mS, so if you change that to like 5000mS then every 5 seconds it will check. Change it to 60000mS and it will check every minute.

Originally Posted by BlackStealth

Thanks this is exactly what I was hoping for!

Did it reduce it for you enough? I am curious as to how efficient the program is on a weaker system. My development PC is a beast!

No problem. Is this on a via system?

oh wow, it uses that much CPU on an amd XP2200? Yikes!

If I plan on using that to monitor my oem buttons, I don't think I would want to set it to monitor button presses every 5-6 seconds. I would need it to monitor fairly often and a 50% CPU usuage on top of my current CPU usage would bring it to a crawl. Are there any other tweaks to use less CPU or is that it?

If it is USB 1, then yes it goes much slower, so it creates a backlog.

I have run it on a P3 800Mhz or 1Ghz, I cannot remember, and it was negligable CPU with a PCI USB 2.0 card.

ah ok. Good to know. I've got USB 2.0 so I guess it shouldn't be a problem off a p4m 1.8, especially if it works off that old mobo and P3 I donated to you.

Thanks for the info.