https://www.dedoimedo.com/computers/crash.html#mozTocId484074
http://people.redhat.com/anderson/crash_whitepaper/help_pages/ps.html
dmesg time covert
date -d "1970-01-01 UTC `echo "$(date +%s)-$(cat /proc/uptime|cut -f 1 -d' ')+69740.690129"|bc `seconds"