def _test_behaviour(self, signal_name, error_margin_pct):
task = self.task_name
phase = self.wlgen_task.phases[0]
df = self.get_simulated_pelt(task, signal_name)
cpus = sorted(phase['cpus'])
assert len(cpus) == 1
cpu = cpus[0]
expected_duty_cycle_pct = phase['wload'].unscaled_duty_cycle_pct(self.plat_info)
expected_final_util = expected_duty_cycle_pct / 100 * UTIL_SCALE
settling_time = pelt_settling_time(10, init=0, final=expected_final_util)
settling_time += df.index[0]
df = df[settling_time:]
# Instead of taking the mean, take the average between the min and max
# values of the settled signal. This avoids the bias introduced by the
# fact that the util signal stays high while the task sleeps
settled_signal_mean = kernel_util_mean(df[signal_name], plat_info=self.plat_info)
expected_signal_mean = expected_final_util
signal_mean_error_pct = abs(expected_signal_mean - settled_signal_mean) / UTIL_SCALE * 100
res = ResultBundle.from_bool(signal_mean_error_pct < error_margin_pct)
res.add_metric('expected mean', expected_signal_mean)
res.add_metric('settled mean', settled_signal_mean)
res.add_metric('settled mean error', signal_mean_error_pct, '%')
self._plot_pelt(task, signal_name, df['simulated'], 'behaviour')
res = self._add_cpu_metric(res)
return res
from lisa.tests.base import (Result, ResultBundle, AggregatedResultBundle,
TestBundleBase, TestBundle, RTATestBundle)
from lisa.target import Target
from lisa.utils import ArtifactPath, ExekallTaggable, groupby, kwargs_forwarded_to, memoized
from lisa.datautils import df_refit_index, series_dereference, series_mean
from lisa.wlgen.rta import PeriodicWload, RTAPhase
from lisa.trace import MissingTraceEventError
from lisa.analysis.load_tracking import LoadTrackingAnalysis
from lisa.analysis.tasks import TasksAnalysis
from lisa.pelt import PELT_SCALE, simulate_pelt, pelt_settling_time, kernel_util_mean
from lisa.notebook import plot_signal
UTIL_SCALE = PELT_SCALE
UTIL_CONVERGENCE_TIME_S = pelt_settling_time(1, init=0, final=1024)
"""
Time in seconds for util_avg to converge (i.e. ignored time)
"""
class LoadTrackingHelpers:
"""
Common bunch of helpers for load tracking tests.
"""
MAX_RTAPP_CALIB_DEVIATION = 3 / 100
"""
Ignore CPUs that have a RTapp calibration value that deviates too much
from the average calib value in their capacity class.
"""
