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2025-04-03 - 16:02

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #6

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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  Intel
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack1slot6s.osadl.org (updated Thu Apr 03, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29527999728,14cyclictest0-21swapper/005:54:300
2952799944,28cyclictest0-21swapper/006:29:190
2952799915,28cyclictest0-21swapper/008:38:350
29527999135,12cyclictest12683-21cpuspeed_turbos08:29:090
2953399893,11cyclictest0-21swapper/105:44:001
2952799894,33cyclictest0-21swapper/006:23:580
2953399873,12cyclictest0-21swapper/110:34:041
2953399864,9cyclictest1263-21runrttasks08:24:031
2953399834,12cyclictest0-21swapper/107:54:231
2953399833,12cyclictest0-21swapper/110:29:131
2953399823,12cyclictest0-21swapper/107:09:101
2953399814,12cyclictest0-21swapper/106:34:341
2953399814,12cyclictest0-21swapper/106:34:341
29533998115,38cyclictest26694-21netstat09:04:191
2952799811,40cyclictest0-21swapper/010:14:230
2952799811,40cyclictest0-21swapper/010:14:230
227799810,5rtkit-daemon2276-21rtkit-daemon05:34:433
2953399804,12cyclictest0-21swapper/110:24:051
2953399794,12cyclictest0-21swapper/109:09:271
2953399794,12cyclictest0-21swapper/108:49:121
2953399794,12cyclictest0-21swapper/108:49:121
2953399794,12cyclictest0-21swapper/108:44:101
2953399793,12cyclictest0-21swapper/105:44:381
227799790,4rtkit-daemon2276-21rtkit-daemon09:29:343
227799790,4rtkit-daemon2276-21rtkit-daemon09:29:343
227799790,4rtkit-daemon2276-21rtkit-daemon08:06:453
227799790,4rtkit-daemon2276-21rtkit-daemon08:06:453
29533997844,28cyclictest22173-21gltestperf07:29:151
2953399784,10cyclictest0-21swapper/108:04:171
2953399784,10cyclictest0-21swapper/108:04:171
29533997816,55cyclictest13594-21head09:54:041
227799780,4rtkit-daemon2276-21rtkit-daemon07:33:163
2953399774,12cyclictest0-21swapper/108:54:051
2953399774,12cyclictest0-21swapper/106:24:271
2953399773,11cyclictest28484-21munin-node06:29:331
227799770,4rtkit-daemon2276-21rtkit-daemon06:14:343
2953399764,13cyclictest0-21swapper/105:24:011
2953399764,11cyclictest0-21swapper/110:49:181
2953399763,12cyclictest0-21swapper/107:24:081
29533997618,41cyclictest32104-21cat05:29:021
2953399754,9cyclictest23842-21runrttasks06:19:101
2953399754,49cyclictest0-21swapper/109:14:241
2953399754,13cyclictest0-21swapper/108:38:451
2953399754,12cyclictest0-21swapper/107:19:301
2953399754,12cyclictest0-21swapper/107:19:301
2953399753,64cyclictest0-21swapper/109:49:041
2953399753,11cyclictest0-21swapper/107:08:571
29533997524,44cyclictest19306-21cpuspeed_turbos06:09:161
2953399744,63cyclictest0-21swapper/109:03:531
2953399744,12cyclictest0-21swapper/108:43:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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