Solution : https://service.sap.com/sap/support/notes/955233 (SAP Service marketplace login required)
Key words : 
/usr/sap/<sid>/<central instance>/sdm/program/ directory   3, /sap/engine/services/timeout/timeoutlistener, /<sdm>/program/log/ directory, sdm loops consuming 100% cpu, <sdm>/program directory   3, online deployment sdm hangs, sap j2ee engine 6, sap j2ee engine 7, sdm log file, high cpu usage
Related Notes : 
       
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