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test: relax test_dma_playback_time on Zynq

This commit is contained in:
Sebastien Bourdeauducq 2020-09-11 11:21:45 +08:00
parent 6195b1d3a0
commit bff611a888
1 changed files with 10 additions and 3 deletions
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11
artiq/test/coredevice/test_rtio.py
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@ -627,11 +627,13 @@ class _DMA(EnvExperiment):
self.delta = now_mu() - start
@kernel
def playback_many(self, n):
def playback_many(self, n, add_delay=False):
handle = self.core_dma.get_handle(self.trace_name)
self.core.break_realtime()
t1 = self.core.get_rtio_counter_mu()
for i in range(n):
if add_delay:
delay(2*us)
self.core_dma.playback_handle(handle)
t2 = self.core.get_rtio_counter_mu()
self.set_dataset("dma_playback_time", self.core.mu_to_seconds(t2 - t1))
@ -724,12 +726,17 @@ class DMATest(ExperimentCase):
self.device_mgr.get_desc("ad9914dds0")
except KeyError:
raise unittest.SkipTest("skipped on Kasli for now")
exp = self.create(_DMA)
is_zynq = exp.core.target_cls == CortexA9Target
count = 20000
exp.record_many(40)
exp.playback_many(count)
exp.playback_many(count, is_zynq)
dt = self.dataset_mgr.get("dma_playback_time")
print("dt={}, dt/count={}".format(dt, dt/count))
if is_zynq:
self.assertLess(dt/count, 6.2*us)
else:
self.assertLess(dt/count, 4.5*us)
def test_dma_underflow(self):