Our client is encountering high CPU utilization of almost 100% on his Cisco 6509-E. When I checked the "show process cpu" the process "ios-base" constitutes to 97% of that utilization. The IOS version that they are using is s72033-ipbasek9-vz.122-33.SXI2a.bin. Is there a known bug for this IOS? I'm trying to look for it at cisco.com but can't find any that will relate to ios-base process.
maybe it would be better to use "mz" ios instead of "vz" ios. As i remember, in modular ios more one process seems bundled as one process (like ios-base) in cpu outcome. So it can be difficult to analyse problems.