Way to avoid gazebo calling gettimeofday so much?

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After having performance problems I ran sysprof along side gazebo and noticed that > 40% of the cpu resources being used up were for calls to sys_clock_gettime() via gettimeofday() via gazebo::common::Time::GetWallTime()

This seems unusual. Is this an indication that I've something mis-configured? Is there a way to mitigate this?

gazebo-1.2.6