cell_ewma_t Struct Reference

#include <or.h>

Data Fields
unsigned	last_adjusted_tick
double	cell_count
unsigned int	is_for_p_conn: 1
int	heap_index

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Detailed Description

The cell_ewma_t structure keeps track of how many cells a circuit has transferred recently. It keeps an EWMA (exponentially weighted moving average) of the number of cells flushed from the circuit queue onto a connection in connection_or_flush_from_first_active_circuit().

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Field Documentation

unsigned cell_ewma_t::last_adjusted_tick

The last 'tick' at which we recalibrated cell_count.

A cell sent at exactly the start of this tick has weight 1.0. Cells sent since the start of this tick have weight greater than 1.0; ones sent earlier have less weight.

Referenced by init_circuit_base(), or_circuit_new(), and scale_single_cell_ewma().

double cell_ewma_t::cell_count

The EWMA of the cell count.

Referenced by compare_cell_ewma_counts(), init_circuit_base(), or_circuit_new(), and scale_single_cell_ewma().

unsigned int cell_ewma_t::is_for_p_conn

True iff this is the cell count for a circuit's previous connection.

Referenced by assert_active_circuits_ok(), cell_ewma_to_circuit(), init_circuit_base(), and or_circuit_new().

int cell_ewma_t::heap_index

The position of the circuit within the OR connection's priority queue.

Referenced by add_cell_ewma_to_conn(), assert_active_circuits_ok(), init_circuit_base(), or_circuit_new(), and remove_cell_ewma_from_conn().

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The documentation for this struct was generated from the following file:

• or.h