The atop package is not in RHEL 6.0.
It seems like this would be a useful package to have for performance monitoring.
More information on atop can be found here:
Given we already ship sysstat, I'm not sure supporting another *additional* system stat collecting daemon is a good idea. It's probably a better idea for EPEL, with a look towards maybe replacing sysstat if it's better in RHEL 7 (as it's awfully late in the RHEL 6 cycle.)
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