diff options
| author | Tuukka Tikkanen <tuukka.tikkanen@linaro.org> | 2015-01-21 00:47:47 +0200 |
|---|---|---|
| committer | Tuukka Tikkanen <tuukka.tikkanen@linaro.org> | 2015-01-21 00:47:47 +0200 |
| commit | 65891f8a8480a8245b3df27ee5ef5b2fc3bfba67 (patch) | |
| tree | 7804aac3202ddd610c218e15c6b8c4b6d0f0a0af | |
| parent | 6751e8c3f3778c971ba777aba2f3719c28211733 (diff) | |
Energy_model: Add cluster P-state calculation based on trace data
Earlier cluster P-state calculation for energy model was based
on a very simple guess (longest duration of any contained CPU).
This patch changes the calculation to be based on actual core
or cluster residency at the frequency in question.
Signed-off-by: Tuukka Tikkanen <tuukka.tikkanen@linaro.org>
| -rw-r--r-- | energy_model.c | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/energy_model.c b/energy_model.c index 9f15fbc..7965d82 100644 --- a/energy_model.c +++ b/energy_model.c @@ -491,18 +491,26 @@ void calculate_energy_consumption(struct cpu_topology *cpu_topo, struct program_ } } } - /* - * XXX - * No cluster P-state duration info available yet, so estimate this - * as the maximum of the durations of its cores at that frequency. - */ - for (i = 0; i < clustp->number_cap_states; i++) { - pp = &clustp->p_energy[i]; - cluster_cap += pp->max_core_duration * pp->cluster_power; - verbose_fprintf(stderr, 1, " P%02d cap estimate for [%7d] | %13.0f | %7d | %7s | %12.0f | %12s | %12s |\n", - clustp->number_cap_states - i - 1, pp->speed, - pp->max_core_duration, + /* Cluster P-state duration */ + for (j = 0; j < s_phy->pstates->max; j++) { + struct cpufreq_pstate *p = &s_phy->pstates->pstate[j]; + + if (p->count == 0) + continue; + + pp = find_pstate_energy_info(current_cluster, p->freq/1000); + if (!pp) { + verbose_fprintf(stderr, 2, "Cluster %c P%-2d no energy model for [%d] (%d hits, %f duration)\n", + s_phy->physical_id + 'A', j, p->freq/1000, + p->count, p->duration); + continue; + } + + cluster_cap += p->duration * pp->cluster_power; + verbose_fprintf(stderr, 1, "Freq %7u kHz cap estimate for [%7d] | %13.0f | %7d | %7s | %12.0f | %12s | %12s |\n", + pp->speed, + p->duration, pp->cluster_power, "", cluster_cap, |