Why does the command "perf list" produce different outputs on the same version RedHat Linux?

I got two RedHat Linux machine with the same OS version, but for the command perf list, it produces different outputs.

The first machine:

cat /proc/version

Linux version 2.6.32-279.11.1.el6.x86_64
(mockbuild@ca-build44.us.oracle.com) (gcc version 4.4.6 20120305 (Red
Hat 4.4.6-4) (GCC) ) #1 SMP Tue Oct 16 08:03:36 PDT 2012

perf --version

perf version 3.0.36-300.17.1.el6uek.x86_64

On this machine, perf list couldn't list out any tracepoint events.

The second machine:

cat /proc/version

Linux version 2.6.32-279.11.1.el6.x86_64
(mockbuild@ca-build44.us.oracle.com) (gcc version 4.4.6 20120305 (Red
Hat 4.4.6-4) (GCC) ) #1 SMP Tue Oct 16 08:03:36 PDT 2012

perf --version

perf version 3.0.36-300.17.1.el6uek.x86_64

On this machine, perf list could list out all events