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2026-08-20 - 18:42
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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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6.osadl.org (updated Thu Aug 20, 2026 12:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
86309910780,18cyclictest14-21ksoftirqd/009:35:150
86309910478,17cyclictest14-21ksoftirqd/011:30:120
86309910476,19cyclictest14-21ksoftirqd/011:00:140
86309910275,18cyclictest14-21ksoftirqd/007:30:120
86309910272,20cyclictest14-21ksoftirqd/010:00:150
86309910170,20cyclictest14-21ksoftirqd/009:10:130
86309910071,16cyclictest0-21swapper/009:20:130
817029926,29sleep10-21swapper/107:06:591
227212990,6chrt22724-21awk07:45:350
8630999867,20cyclictest14-21ksoftirqd/009:45:130
8630999459,21cyclictest0-21swapper/009:25:110
8630999113,66cyclictest0-21swapper/008:00:140
8630999113,66cyclictest0-21swapper/008:00:130
8630999014,61cyclictest0-21swapper/008:05:150
8630998912,66cyclictest0-21swapper/011:50:120
8630998858,18cyclictest0-21swapper/008:40:130
8630998754,21cyclictest14-21ksoftirqd/010:35:140
8630998749,26cyclictest14-21ksoftirqd/009:30:150
8630998648,25cyclictest14-21ksoftirqd/012:10:120
8630998648,25cyclictest14-21ksoftirqd/012:10:120
8630998549,23cyclictest14-21ksoftirqd/010:10:130
8630998547,25cyclictest14-21ksoftirqd/007:55:150
8630998544,31cyclictest14-21ksoftirqd/012:05:260
8630998543,32cyclictest14-21ksoftirqd/012:20:130
8630998447,24cyclictest14-21ksoftirqd/009:15:110
8630998411,63cyclictest0-21swapper/010:50:250
8630998354,18cyclictest14-21ksoftirqd/008:20:100
863099831,70cyclictest0-21swapper/012:00:140
863099828,61cyclictest3523-21runrttasks08:25:120
8630998246,24cyclictest14-21ksoftirqd/008:30:150
8630998246,23cyclictest14-21ksoftirqd/011:35:130
8630998238,31cyclictest14-21ksoftirqd/012:25:250
8630998236,34cyclictest14-21ksoftirqd/012:30:130
8630998215,54cyclictest0-21swapper/008:50:170
8630998157,14cyclictest0-21swapper/007:15:130
863299808,51cyclictest0-21swapper/110:55:131
863099809,56cyclictest885-21apache211:10:240
8630998045,25cyclictest14-21ksoftirqd/012:35:140
8630998014,53cyclictest0-21swapper/007:10:130
8630997913,54cyclictest0-21swapper/008:35:130
688827929,37sleep00-21swapper/007:05:100
8632997848,11cyclictest503-21snmpd08:00:551
8632997848,11cyclictest503-21snmpd08:00:551
8630997817,23cyclictest562-21runrttasks09:00:130
8630997814,50cyclictest0-21swapper/011:45:110
8630997811,53cyclictest0-21swapper/008:55:140
8630997740,27cyclictest14-21ksoftirqd/008:15:130
8630997740,27cyclictest14-21ksoftirqd/008:15:130
8630997736,29cyclictest14-21ksoftirqd/010:20:150
8630997712,52cyclictest0-21swapper/011:05:130
8630997610,55cyclictest134682sleep010:25:110
8630997516,49cyclictest0-21swapper/008:45:100
8630997512,51cyclictest0-21swapper/009:05:150
8630997418,44cyclictest0-21swapper/007:50:230
8630997411,53cyclictest0-21swapper/011:55:120
8630997411,53cyclictest0-21swapper/011:55:120
8630997337,23cyclictest0-21swapper/007:20:130
8630997336,25cyclictest0-21swapper/007:25:120
8630997235,24cyclictest0-21swapper/011:20:100
8632997123,42cyclictest26-21ksoftirqd/107:39:461
8632997123,42cyclictest26-21ksoftirqd/107:39:461
8632997117,36cyclictest26-21ksoftirqd/108:30:131
8630997129,28cyclictest0-21swapper/011:40:150
863099712,52cyclictest0-21swapper/010:55:140
863099712,51cyclictest0-21swapper/010:30:130
8630997123,39cyclictest14-21ksoftirqd/010:45:140
8630997114,47cyclictest0-21swapper/008:10:130
863099705,49cyclictest0-21swapper/010:15:120
8630997030,26cyclictest0-21swapper/011:25:130
863099693,51cyclictest0-21swapper/009:55:240
8630996925,29cyclictest0-21swapper/010:05:130
863099691,51cyclictest0-21swapper/007:35:110
863099691,51cyclictest0-21swapper/007:35:110
863099685,49cyclictest0-21swapper/009:40:140
863099682,50cyclictest0-21swapper/011:15:150
8630996811,43cyclictest21124-21apt-get12:15:150
863099674,49cyclictest0-21swapper/009:50:150
8632996623,26cyclictest0-21swapper/111:00:121
8630996613,39cyclictest19063-21apt-get10:40:150
8632996532,20cyclictest26-21ksoftirqd/111:10:051
8630996527,28cyclictest0-21swapper/007:40:110
8632996447,10cyclictest26-21ksoftirqd/110:15:011
8632996416,42cyclictest0-21swapper/109:20:301
8632996241,15cyclictest26-21ksoftirqd/108:25:151
8632996237,9cyclictest12359-21telnet08:50:181
8632996216,40cyclictest26-21ksoftirqd/109:00:161
8632996138,18cyclictest26-21ksoftirqd/112:25:281
8632996113,16cyclictest151rcu_preempt12:15:001
8632996113,16cyclictest151rcu_preempt12:15:001
8632996112,44cyclictest0-21swapper/108:40:371
8632996112,30cyclictest0-21swapper/109:40:131
863299605,27cyclictest0-21swapper/108:21:131
8632996038,9cyclictest26-21ksoftirqd/111:07:371
8632996035,12cyclictest26-21ksoftirqd/107:10:311
8632996029,17cyclictest26-21ksoftirqd/112:00:231
8632996012,30cyclictest0-21swapper/108:15:111
8632996012,30cyclictest0-21swapper/108:15:111
863299598,42cyclictest20806-21apt-get10:45:151
8632995941,11cyclictest26-21ksoftirqd/108:55:171
8632995939,12cyclictest26-21ksoftirqd/111:25:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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