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high cpu workload issue with 3.10.00.19 DVSDK and vanilla 2.6.32 kernel

Hi,

After upgrading dvsdk from 2.10.01.18 to 3.10.00.19 and kernel from montavista 2.6.18 to vanilla 2.6.32, we observed the issue that when running the same application, the cpu workload on the new system is much higher almost twice than the cpu workload when running on the old system(2.10.01.18 dvsdk and 2.6.18 kernel).

Anyone has any idea or sugguestion?