def _log_diff_memory_data(self, prefix, new_memory_data, old_memory_data):
        """
        Computes and logs the difference in memory utilization
        between the given old and new memory data.
        """
        def _vmem_used(memory_data):
            return memory_data['machine_data'].used

        def _process_mem_percent(memory_data):
            return memory_data['process_data']['memory_percent']

        def _process_rss(memory_data):
            return memory_data['process_data']['memory_info'].rss

        def _process_vms(memory_data):
            return memory_data['process_data']['memory_info'].vms

        if new_memory_data and old_memory_data:
            log.info(
                u"%s Diff Vmem used: %s, Diff percent memory: %s, Diff rss: %s, Diff vms: %s",
                prefix,
                _vmem_used(new_memory_data) - _vmem_used(old_memory_data),
                _process_mem_percent(new_memory_data) - _process_mem_percent(old_memory_data),
                _process_rss(new_memory_data) - _process_rss(old_memory_data),
                _process_vms(new_memory_data) - _process_vms(old_memory_data),
            )
def _log_diff_memory_data ( self , prefix , new_memory_data , old_memory_data ) : def _vmem_used ( memory_data ) : return memory_data [ 'machine_data' ] . used def _process_mem_percent ( memory_data ) : return memory_data [ 'process_data' ] [ 'memory_percent' ] def _process_rss ( memory_data ) : return memory_data [ 'process_data' ] [ 'memory_info' ] . rss def _process_vms ( memory_data ) : return memory_data [ 'process_data' ] [ 'memory_info' ] . vms if new_memory_data and old_memory_data : log . info ( u"%s Diff Vmem used: %s, Diff percent memory: %s, Diff rss: %s, Diff vms: %s" , prefix , _vmem_used ( new_memory_data ) - _vmem_used ( old_memory_data ) , _process_mem_percent ( new_memory_data ) - _process_mem_percent ( old_memory_data ) , _process_rss ( new_memory_data ) - _process_rss ( old_memory_data ) , _process_vms ( new_memory_data ) - _process_vms ( old_memory_data ) , )
Computes and logs the difference in memory utilization
        between the given old and new memory data.