hardware testing

Hi, all FreeBSD Gurus! Could You be so please to explain: On which principles FreeBSD giving the NICs ports identity? From my knowledge, there are involved (from HIGHT IMPACT to LOW): motherboard schematics, BIOS subsystem, NICs mechanical interface (PCI, PCI-e, etc...), NICs order in...

Dear FreeBSD Gurus! Please suggest the toolset for benchmark testing and for stress test: from memory modules, CPU, PCI bus to HDD/SDD. (both for initial testing when new servers arrive in DC and for periodical testing after maintenance like memory upgrade, CPU upgrade, disks upgrade...) Also...