Instead of backing up the existing www configuration, I am going to attempt to move the web server from a virtual server to a physical server.  The reason for this is that 5.16 kernel is not handling interrupts as efficiently as previous kernels did but previous kernels have an exploit known as a “dirty pipe” exploit that make running them hazardous.

     So by moving the web server to a physical machine I’ll more than half the number of ethernet interface related interrupts the CPU has to handle and those are the majority.  The reason for this is that the emulated ethernet in the virtual machine has no hardware offloading so it has to generate an interrupt for every packet, and the CPU has to process both the interrupts for the emulated ethernet and the interrupts for the real ethernet though the latter are fewer because it does have hardware offloading.  By eliminating the emulated ethernet, I will cut the ethernet generated interrupt traffic by more than half.