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2024-04-19 - 23:48

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 Fri Apr 19, 2024 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3154121460,6sleep0613199cyclictest09:34:410
6141999122,12cyclictest0-21swapper/306:17:203
6141999033,49cyclictest2889-21gltestperf06:25:003
6141998933,48cyclictest28712-21gltestperf08:19:533
614199854,26cyclictest0-21swapper/308:32:243
614199854,13cyclictest0-21swapper/308:59:473
614199853,32cyclictest0-21swapper/305:44:413
614199833,26cyclictest17041-21aten_r1power_cu06:54:463
614199833,17cyclictest0-21swapper/306:45:133
614199828,14cyclictest0-21swapper/309:54:413
6141998222,9cyclictest15266-21needreboot05:45:053
6141998221,9cyclictest30646-21gltestperf07:19:593
614199815,28cyclictest0-21swapper/307:39:553
614199814,32cyclictest0-21swapper/309:29:403
614199814,32cyclictest0-21swapper/309:29:403
6141998126,10cyclictest11036-21gltestperf07:44:553
6141998120,13cyclictest0-21swapper/310:14:223
6141998120,13cyclictest0-21swapper/310:14:223
6141998117,8cyclictest17050-21kworker/3:107:24:463
6141998028,11cyclictest20734-21kernelversion07:00:013
6141998024,10cyclictest19064-21aten_r1power_fr05:54:513
614199794,30cyclictest0-21swapper/306:50:063
614199794,25cyclictest0-21swapper/310:20:023
614199794,25cyclictest0-21swapper/310:20:023
614199794,12cyclictest0-21swapper/308:54:443
6141997923,9cyclictest25390-21gltestperf10:24:483
6141997922,9cyclictest16854-21fschecks_count09:04:473
613899793,69cyclictest30577-21if_eth010:34:521
613899793,69cyclictest0-21swapper/109:14:321
613899793,68cyclictest0-21swapper/105:58:541
614199784,32cyclictest0-21swapper/306:14:393
614199784,31cyclictest0-21swapper/308:14:403
614199783,31cyclictest0-21swapper/309:24:583
6141997827,8cyclictest1286-21runrttasks10:49:463
6141997824,10cyclictest25054-21latency09:19:593
614199774,23cyclictest0-21swapper/307:29:543
614199773,29cyclictest0-21swapper/307:50:003
6141997720,10cyclictest32332-21taskset10:39:443
6141997711,12cyclictest0-21swapper/305:29:413
613899774,55cyclictest0-21swapper/105:34:521
613899773,67cyclictest9002-21snmpd10:03:481
242299770,13rtkit-daemon2421-21rtkit-daemon09:50:282
614199764,9cyclictest30971-21grep08:24:503
614199764,29cyclictest0-21swapper/308:40:063
614199763,28cyclictest0-21swapper/309:49:323
614199763,27cyclictest0-21swapper/308:54:333
613899763,66cyclictest0-21swapper/110:09:551
613899763,66cyclictest0-21swapper/110:09:551
613899763,65cyclictest24594-21munin-node07:09:551
614199754,20cyclictest0-21swapper/310:34:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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