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node: tweak CPU load values

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JACK uses a CPU calculation with an exponential moving average
with degree of 1/2.
This commit is contained in:
Wim Taymans 2019-08-22 13:57:59 +02:00
parent 6ad4adc194
commit 93fbe121d0
2 changed files with 5 additions and 4 deletions
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7
src/pipewire/node.c
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@ -789,8 +789,8 @@ static inline void calculate_stats(struct pw_node *this, struct pw_node_activat
uint64_t process_time = a->finish_time - a->signal_time;
uint64_t period_time = a->signal_time - a->prev_signal_time;
float load = (float) process_time / (float) period_time;
a->cpu_load[0] = (a->cpu_load[0] * 7.0f + load) / 8.0f;
a->cpu_load[1] = (a->cpu_load[1] * 15.0f + load) / 16.0f;
a->cpu_load[0] = (a->cpu_load[0] + load) / 2.0f;
a->cpu_load[1] = (a->cpu_load[1] * 7.0f + load) / 8.0f;
a->cpu_load[2] = (a->cpu_load[2] * 31.0f + load) / 32.0f;
}
}
@ -831,9 +831,10 @@ static inline int process_node(void *data)
calculate_stats(this, a);
pw_log_trace_fp(NAME" %p: graph completed wait:%"PRIu64" run:%"PRIu64
" period:%"PRIu64" cpu:%f:%f:%f", this,
" busy:%"PRIu64" period:%"PRIu64" cpu:%f:%f:%f", this,
a->awake_time - a->signal_time,
a->finish_time - a->awake_time,
a->finish_time - a->signal_time,
a->signal_time - a->prev_signal_time,
a->cpu_load[0], a->cpu_load[1], a->cpu_load[2]);