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cpustates: Added the ability to configure how a missing start marker is handled.

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cpustates can now handle the lack of a start marker in three ways:

 - try: If the start marker is present only the correct section of the trace
        will be used, if its not the whole trace will be used.
 - error: An error will be raised if the start marker is missing
 - ignore: The markers are ignored and the whole trace is always used.
This commit is contained in:
Sebastian Goscik
2016-06-06 16:07:01 +01:00
parent 1811a8b733
commit f276d4e39f
3 changed files with 72 additions and 33 deletions
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15
wlauto/result_processors/cpustate.py
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@@ -109,6 +109,19 @@ class CpuStatesProcessor(ResultProcessor):
The values generated are floating point numbers, normalised based on the maximum
frequency of the cluster.
"""),
Parameter('start_marker_handling', kind=str, default="try",
allowed_values=['ignore', 'try', 'error'],
description="""
The trace-cmd instrument inserts a marker into the trace to indicate the beginning
of workload execution. In some cases, this marker may be missing in the final
output (e.g. due to trace buffer overrun). This parameter specifies how a missing
start marker will be handled:
:`ignore`: The start marker will be ignored. All events in the trace will be used.
:`error`: An error will be raised if the start marker is not found in the trace.
:`try`: If the start marker is not found, all events in the trace will be used.
""")
]
def validate(self):
@@ -201,10 +214,10 @@ class CpuStatesProcessor(ResultProcessor):
timeline_csv_file=timeline_csv_file,
cpu_utilisation=cpu_utilisation,
max_freq_list=self.max_freq_list,
start_marker_handling=self.start_marker_handling,
)
parallel_report = reports.pop(0)
powerstate_report = reports.pop(0)
if parallel_report is None:
self.logger.warning('No power state reports generated; are power '
'events enabled in the trace?')