International Business Machines Corporation

Hua Qing Li

Ting Wang

Yang Liu

Qi Cheng Li

Yi Bu Li

Qing Shan Zhang

Xiao Ping Guo

Jin Huang

Bo Zou

Gui Haochen

Fei Fei

Yangming Wang

Xiao Hua Zeng

Xiao Ming Shi

Kai Rong Wang

Instruction cache behavior and branch prediction are used to improve the functionality of a computing device by profiling branching instructions in an instruction cache to identify likelihoods of proceeding to a plurality of targets from the branching instructions; identifying a hot path in the instruction cache based on the identified likelihoods; and rearranging the plurality of targets relative to one another and associated branching instructions so that a first branching instruction that has a higher likelihood of proceeding to a first hot target than to a first cold target and that previously flowed to the first cold target and jumped to the first hot target instead flows to the first hot target and jumps to the first cold target.

Instruction cache behavior and branch prediction

A method to more effectively and efficiently diagnose problems in a storage network is disclosed. In one embodiment, such a method includes generating, for a storage network, a resource map that identifies components therein. For each component in the resource map, the method identifies an importance factor that indicates the component's importance in the storage network. When a problem is detected in the storage network, the method identifies, for each component in the resource map, a potential cause factor that indicates how likely the component is to have caused the problem. The method also calculates, for each component in the resource map, a problem responsibility factor to indicate to what extent the component is held responsible for the problem. A corresponding system and computer program product are also disclosed.

Problem diagnosis in complex SAN environments

Growing community of inventors

Shanghai, China

Hua Qing Li