hi all,

I have a problem with cpu load balance when some computer behind my ROS box was under SYN flood attack.

Under normal condition, cpu load may upto 56% or more, seems normal.

When some computer behind the ROS box was being attacked, cpu load of ROS box would be 50%, no more, no less. But the network was obviously overloaded, a lot of packages was droped by the ROS box.

I have set multi-cpu=yes.

Why the system didn't suck more cpu?

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My ROS box:
Software: ROS 3.20
CPU: E8400
RAM: 2GB DDR2 800
Motherboard: ASUS P5BV BCM5721 X2
NIC: Intel 82545 LX *2