Inconsistent timestamp from dmesg -T

Issue

• When converting dmesg output to a timestamp, it may be significantly inconsistent with when the kernel message actually happened.

• On RHEL6, one would first execute

# echo Y > /sys/module/printk/parameters/time

and then use some script to add the [sec.msec] dmesg output to the current time (localtime), and finally convert it to an appropriate human readable format.