when I install the comodo firewall ,CPU is up to 90%.who can tell me why ? Is it normal??
Welcome to the forum, ybs0809.
A few related links. The last is 10 pages long:
https://forums.comodo.com/index.php/topic,7168.0.html
https://forums.comodo.com/index.php/topic,6939.0.html
https://forums.comodo.com/index.php/topic,6433.0.html
https://forums.comodo.com/index.php/topic,6068.0.html
https://forums.comodo.com/index.php/topic,7073.0.html
https://forums.comodo.com/index.php/topic,6943.0.html
https://forums.comodo.com/index.php/topic,6494.0.html
https://forums.comodo.com/index.php/topic,6819.0.html
https://forums.comodo.com/index.php/topic,5754.0.html
https://forums.comodo.com/index.php/topic,6573.0.html
https://forums.comodo.com/index.php/topic,6558.0.html
https://forums.comodo.com/index.php/topic,6434.0.html
https://forums.comodo.com/index.php/topic,5946.0.html
https://forums.comodo.com/index.php/topic,5499.0.html
In summary of the most common causes: cpf.exe = logging problem, cmdagent.exe = Monitor Dll Injections.