Hi Monks, We are also facing the same problem. The memory is growing like anything. The only difference is, we are using call_pv() to invoke the perl subroutine instead of perl_run(). We thought of posting the same question yesterday itself. However, we couldn't. When will the memory allocated by the perl be released, during perl_destruct() or when the reference count to perl variables (scalar/hash/list) becomes zero?. Any suggestions or comments will be helpful. Regards, Poornachandran SM