What am I doing wrong with the kernel-rt?

Good day, ladies and gentlemen.
I have CentOS 7.
there are 2 Assembly of the rt kernel.

then we contracted with Gita tsentosa all necessary and collect the bags. everything works. I must add that there are efimernoe synthetic test in nanoseconds. what the figure below - the nimble. if you build the kernel on this recipe turns 4 microseconds.

and there is an alternative recipe:

here we download the source, patch, run config and collect. I have not collected as make. and how to make rpm.
and the figure which is 5.5 microseconds.

config-3.10.101-rt111 and config-3.10.0-327.18.2.rt56.223.el7.centos.x86_64 are identical.

what am I doing wrong? where to dig, what to read?

PS: I tried to collect as make; make modules_install install; the results can be just as bad.
July 9th 19 at 10:29

Find more questions by tags CentOS