fix: mem-copy for READ benchmarks

Replace rand reader (#15)

Doesn't depend on encryption performance.

implement a full syscall write

remove numa dependency and flag (#13)

move to minio/pkg/v2

fix: IOPerdrive to be '4' if not specified

avoid Go based io.Reader via poll.FD (#11)

instead directly deal with 'fd's to get
the real disk performance

add --cpunode pinning flag to ensure we can pin to specific CPU node

also upgrade all dependent packages

set alignsize to 4096 on all platforms

fix: cross platform issue