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2026-04-08 - 21:36
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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 Wed Apr 08, 2026 12:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26475998966,12cyclictest14-21ksoftirqd/009:55:230
26475998839,43cyclictest2699-21chrt10:30:370
2605228817,26sleep00-21swapper/007:07:240
26475998560,13cyclictest14-21ksoftirqd/009:15:130
26475998559,15cyclictest14-21ksoftirqd/010:15:120
26475998532,46cyclictest31139-21memory07:20:240
2647599847,67cyclictest3299-21apt-get10:35:130
26475998338,39cyclictest3836-31find07:35:290
2647599816,60cyclictest5134-21apt-get12:10:230
26475998150,19cyclictest14-21ksoftirqd/007:40:130
26475998113,56cyclictest0-21swapper/009:25:230
315342800,9sleep1251rcuc/108:50:351
2647599803,70cyclictest5987-21memory10:40:350
26475998014,51cyclictest0-21swapper/008:20:110
2647599796,60cyclictest32189-21apt-get08:55:110
26475997951,18cyclictest14-21ksoftirqd/011:25:130
26475997915,49cyclictest0-21swapper/008:30:130
26475997913,54cyclictest0-21swapper/011:50:110
26475997913,54cyclictest0-21swapper/011:50:110
26475997855,14cyclictest14-21ksoftirqd/011:30:130
26475997850,19cyclictest14-21ksoftirqd/012:05:130
2647599783,69cyclictest11994-21runrttasks12:27:220
2647599782,68cyclictest2375-21smartctl09:00:340
26475997817,55cyclictest1765-21aten2.4-expect07:30:160
26475997752,17cyclictest14-21ksoftirqd/008:50:120
2647599773,68cyclictest8938-21apt12:20:100
2647599773,46cyclictest562-21runrttasks10:51:320
26475997715,52cyclictest0-21swapper/010:00:120
26475997713,53cyclictest0-21swapper/009:20:110
2647599767,54cyclictest3263-21apt-get09:05:130
26475997649,17cyclictest14-21ksoftirqd/009:50:140
2647599764,59cyclictest18058-21aten2.4-expect09:45:170
26475997612,52cyclictest0-21swapper/010:10:120
2647599757,57cyclictest30509-21apt-get10:20:130
2647599757,57cyclictest30509-21apt-get10:20:130
2647599756,60cyclictest32247-21apt-get10:25:120
2647599756,58cyclictest32322-21apt-get07:25:130
2647599756,58cyclictest24936-21apt-get11:35:130
2647599756,57cyclictest6877-21apt-get12:15:120
2647599755,60cyclictest18178-21apt-get08:15:220
2647599753,67cyclictest14980-21memory11:05:240
26475997522,47cyclictest481-21gdbus11:05:010
26475997517,52cyclictest10709-21aten2.4-expect07:55:160
26475997513,50cyclictest0-21swapper/008:40:130
2647599747,55cyclictest16215-21apt-get11:10:130
2647599746,58cyclictest12422-21apt-get12:30:130
2647599746,56cyclictest14382-21apt-get09:35:140
2647599746,55cyclictest12309-21apt-get08:00:110
26475997429,39cyclictest18104-21cut11:15:160
26475997413,49cyclictest0-21swapper/011:45:140
26475997412,51cyclictest0-21swapper/008:45:110
2647599737,53cyclictest8811-21apt-get07:50:110
2647599736,63cyclictest0-21swapper/007:20:010
2647599736,58cyclictest16193-21apt-get09:40:140
2647599736,56cyclictest7074-21apt-get07:45:120
26475997345,18cyclictest14-21ksoftirqd/008:05:230
26475997315,46cyclictest0-21swapper/011:20:110
26475997313,52cyclictest0-21swapper/012:38:230
2647599728,55cyclictest26754-21apt-get11:40:110
2647599727,59cyclictest32001-21aten2.4-expect11:55:140
2647599727,54cyclictest12638-21apt-get09:30:230
26475997226,41cyclictest22621-21cat08:25:360
26480997120,40cyclictest26-21ksoftirqd/109:50:381
26475997133,33cyclictest17044-21cat08:10:340
26475997114,46cyclictest0-21swapper/010:45:250
26475997111,51cyclictest0-21swapper/008:35:130
2626027126,35sleep10-21swapper/107:09:041
2647599706,54cyclictest25210-21apt-get10:05:140
26480996917,40cyclictest26-21ksoftirqd/112:05:371
2647599696,49cyclictest5057-21apt-get09:10:120
2647599693,60cyclictest11395-21irqstats10:55:230
26475996919,44cyclictest0-21swapper/007:10:130
26475996912,44cyclictest0-21swapper/012:00:110
98852650,6chrt0-21swapper/107:50:361
2648099647,7cyclictest151rcu_preempt10:10:181
26480996214,11cyclictest0-21swapper/112:10:071
2648099612,46cyclictest151rcu_preempt08:20:361
2648099612,45cyclictest151rcu_preempt11:35:271
26480996114,41cyclictest0-21swapper/111:45:251
26480996014,41cyclictest0-21swapper/108:00:201
105982600,7chrt10597-21/usr/sbin/munin09:25:111
2648099592,50cyclictest15005-21needreboot08:05:361
26480995912,10cyclictest0-21swapper/111:25:201
26480995824,29cyclictest0-21swapper/107:15:061
26480995814,39cyclictest26-21ksoftirqd/109:35:331
2648099578,22cyclictest26-21ksoftirqd/108:29:551
26480995718,12cyclictest26-21ksoftirqd/108:39:001
26480995710,41cyclictest0-21swapper/107:40:181
2648099563,40cyclictest151rcu_preempt07:35:261
26480995618,22cyclictest26-21ksoftirqd/111:51:571
26480995618,22cyclictest26-21ksoftirqd/111:51:571
26480995613,38cyclictest0-21swapper/110:25:131
26480995612,38cyclictest26-21ksoftirqd/111:55:181
2648099559,14cyclictest26-21ksoftirqd/109:55:171
2648099557,34cyclictest0-21swapper/111:00:131
2648099556,43cyclictest0-21swapper/110:30:251
26480995538,10cyclictest26-21ksoftirqd/107:14:591
26480995522,12cyclictest26-21ksoftirqd/111:17:091
26480995519,21cyclictest26-21ksoftirqd/108:15:011
26480995511,39cyclictest18187-21apt-get08:15:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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