Linux – Redhat Linux Kernel what does GA mean

From your gcc -v output it looks as if you are running on a 32-bit machine, is that correct ?

Target: i586-redhat-linux

Try specifying --with-arch=x86_64 insterad of i586.

Hitting F1 or h will show you the key. But for reference, the default colors are:

CPU:

• Blue = Low priority threads
• Green = Normal priority threads
• Red = Kernel threads

Memory:

• Green = Used memory
• Blue = Buffers
• Yellow/Orange = Cache

There are a couple of different color-schemes available, you can see them through hitting F2.