I used to have
```
Runner aggregation finished
ERROR: No data to aggregate. Run with -L and check log file to investigate.
```
with in log
```
ELAPSED_TIME=0.00
...
-- OUTPUT START -->{'TCP netperf::1': [],
'TCP netperf::2': [],
'TCP netperf::3': [],
'TCP netperf::4': [],
'TCP netperf::5': []}<-- OUTPUT END --
```
as if ELAPSED_TIME being 0.00 wouldn't count as a result.
I increased the byte count and it started producing result
```
2018-06-11 11:38:01,160 [flent.aggregators] DEBUG: Runner aggregation finished
-- OUTPUT START -->{'TCP netperf::1': [[1528684679.972, 41611.46]],
'TCP netperf::2': [[1528684679.99, 45512.46]],
'TCP netperf::3': [[1528684680.044, 45546.14]],
'TCP netperf::4': [[1528684680.008, 46227.74]],
'TCP netperf::5': [[1528684680.026, 46214.39]]}<-- OUTPUT END --
```
but these don't seem to be the ELAPSED_TIME.
I've tried using this
```
DATA_SETS = o([
('TCP netperf',
{
'test': 'TCP_STREAM',
'host': HOST,
'length': 10,
'bytes': 100000000,
'duplicates': 5,
# 'units': 'Mbits/s',
'runner': 'netperf_demo',})
])
PLOTS['iperf_delay'] = {'description': 'Netperf completion time',
'type': 'cdf_combine',
'group_by':
'groups_concat',
'series': [
# when
duplicates is used the name is changed to e.g.:
# Started
NetperfDemoRunner idx 4 ('TCP netperf::5')
# thus we need
to use the glob
{'data': glob('TCP netperf*'),
'label': 'completion delay (ms)',
'combine_mode':
'meta:ELAPSED_TIME'
}]
}
```
and it displays an empty plot. when opening the
tcp_iperf_delay-2018-06-07T143147.599875.flent it seems like all elapsed time
were 0.02. I wanted to modify these values in place and regenerate a plot from
the modified tcp_iperf_delay-2018-06-07T143147.599875.flent but couldn't find a
way out.
How can I get
```
'TCP netperf::2': <ElapsedTime2>,
'TCP netperf::3': <ElapsedTime3>,
'TCP netperf::4': <ElapsedTime4><-- OUTPUT END --
```
and then plot the cdf of it ? maybe that's not how it works, and I shouldn't
care about the `'TCP netperf::2': []` data since ELAPSED_TIME is metadata ? it
really looks like magic as it's kind of DSL mixed with python.
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