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2025-12-23 - 06:42
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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 792 highest latencies:
System rack1slot8.osadl.org (updated Tue Dec 23, 2025 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
194432906884,15sleep10-21swapper/119:05:411
1990699869769,74cyclictest0-21swapper/019:10:140
1990799862753,74cyclictest20302-21df_abs19:10:151
1990799436381,39cyclictest0-21swapper/120:03:561
197232430407,16sleep00-21swapper/019:08:270
1990699426372,45cyclictest0-21swapper/020:03:560
307422820,4sleep030741-21sendmail_mailst23:55:260
1990699752,49cyclictest25307-21latency_hist19:25:010
219442740,4sleep021943-21ssh00:35:490
19906997140,26cyclictest0-21swapper/022:50:410
1990699712,63cyclictest30945-21ssh21:10:010
19906997021,42cyclictest88850irq/46-eth0-tx-21:14:190
1990699702,61cyclictest21522-21munin-run22:45:000
19907996919,44cyclictest31117-21munin-node22:05:151
1990699692,60cyclictest6404-21ssh00:10:140
1990699692,60cyclictest14819-21munin-node20:25:190
1990699687,54cyclictest20335-21ssh23:38:070
1990699682,59cyclictest19310-21sendmail_mailtr20:35:230
1990699682,59cyclictest11214-21munin-node20:15:270
228699670,4rtkit-daemon2285-21rtkit-daemon22:06:560
1990799672,59cyclictest13989-21munin-node20:20:241
19906996746,16cyclictest0-21swapper/023:20:160
19906996721,40cyclictest88850irq/46-eth0-tx-22:48:340
1990699672,59cyclictest3058-21sh00:04:550
1990699672,58cyclictest3800-21ssh22:13:420
1990699672,42cyclictest19682-21ssh00:32:460
1990799663,56cyclictest307-21munin-node19:45:131
1990699665,36cyclictest0-21swapper/000:20:290
1990699664,55cyclictest16643-21munin-node22:35:190
19906996621,30cyclictest88850irq/46-eth0-tx-21:20:210
1990699662,58cyclictest8751-21ssh22:21:080
1990699662,58cyclictest29617-21latency_hist23:55:010
1990699662,58cyclictest1568-21runrttasks23:47:440
1990699662,49cyclictest12455-21ssh23:25:080
19906996617,33cyclictest88850irq/46-eth0-tx-22:17:320
19906996613,47cyclictest5450-21ssh23:11:410
1990799655,54cyclictest0-21swapper/122:27:541
19906996545,15cyclictest0-21swapper/023:40:150
1990699654,44cyclictest0-21swapper/000:17:130
1990699653,52cyclictest16731-21df21:40:120
1990699653,36cyclictest13309-21df22:30:140
1990699652,58cyclictest30795-21latency_hist22:05:010
1990699652,56cyclictest24475-21ssh21:53:320
1990699652,56cyclictest13892-21df_inode21:35:140
1990699652,47cyclictest12859-21latency_hist22:30:010
1990699652,43cyclictest3269-21ssh00:05:080
1990699652,41cyclictest21385-21ssh21:47:530
19906996518,41cyclictest88850irq/46-eth0-tx-00:29:290
19906996515,44cyclictest88850irq/46-eth0-tx-23:34:490
1990799645,53cyclictest0-21swapper/121:47:451
1990799644,54cyclictest0-21swapper/123:47:041
19907996418,38cyclictest30742-21runrttasks23:55:261
19906996445,14cyclictest0-21swapper/023:15:310
19906996443,16cyclictest0-21swapper/021:15:260
19906996433,17cyclictest0-21swapper/021:00:000
1990699643,37cyclictest1463-21irqstats23:05:190
1990699642,55cyclictest31523-21ssh23:00:280
1990699642,55cyclictest25161-21munin-node21:55:120
1990699642,55cyclictest12312-21ssh21:31:540
1990699642,41cyclictest27251-21runrttasks19:30:030
1990699642,37cyclictest32671-21munin-node19:45:220
1990799633,53cyclictest30921-21diskmemload21:40:121
1990799633,50cyclictest9842-21munin-node23:20:161
1990699632,55cyclictest16624-21munin-node20:30:120
1990699632,54cyclictest13018-21munin-node20:20:280
19906996311,45cyclictest0-21swapper/021:25:140
1990799627,49cyclictest0-21swapper/121:05:281
1990799624,53cyclictest13397-21ssh21:35:011
1990799624,51cyclictest0-21swapper/100:12:531
1990799623,53cyclictest27725-21ps21:59:411
1990799623,52cyclictest566-21df_inode00:00:171
1990799623,49cyclictest16186-21sh22:35:131
1990799622,54cyclictest15681-21sendmail_mailqu20:25:231
1990799622,53cyclictest16211-21processes23:30:251
19906996242,14cyclictest0-21swapper/019:40:150
1990699622,53cyclictest3987-21munin-node19:55:220
1990699622,53cyclictest29358-21ssh22:57:300
1990799616,49cyclictest0-21swapper/122:55:371
1990799616,47cyclictest21108-21munin-node20:40:231
1990799616,47cyclictest10191-21munin-node20:10:241
1990799616,40cyclictest0-21swapper/100:05:251
1990799615,50cyclictest1964-21munin-node22:10:161
1990799615,50cyclictest0-21swapper/123:52:161
1990799615,50cyclictest0-21swapper/100:20:271
1990799614,51cyclictest13824-21ssh21:35:151
1990799614,50cyclictest22767-21munin-node19:15:241
1990799613,52cyclictest8533-21munin-node21:25:261
1990799613,51cyclictest25711-21munin-node20:55:151
1990799613,51cyclictest22656-21taskset00:38:021
1990799612,52cyclictest30962-21munin-node19:40:111
1990799612,52cyclictest27305-21latency_hist22:55:001
1990799612,52cyclictest25403-21runrttasks20:54:091
1990699612,54cyclictest27107-21crond19:30:000
1990699612,54cyclictest27107-21crond19:30:000
1990699612,53cyclictest29007-21runrttasks21:03:590
1990699612,36cyclictest21887-21munin-run20:45:000
1990799605,49cyclictest28359-21ssh22:00:161
1990799603,52cyclictest18369-21munin-node23:35:131
1990799603,51cyclictest17503-21munin-node20:30:231
1990799602,52cyclictest22451-21gltestperf20:45:171
19907996018,34cyclictest0-21swapper/100:15:161
19907996014,39cyclictest4227-21munin-node19:55:161
1990699608,46cyclictest1320-21nscd19:55:010
19906996040,15cyclictest0-21swapper/019:15:250
1990699602,52cyclictest8313-21netstat20:05:210
1990799596,48cyclictest0-21swapper/122:43:221
1990799596,48cyclictest0-21swapper/120:05:191
1990799595,48cyclictest0-21swapper/123:19:091
1990799594,49cyclictest3856-21munin-node23:10:131
1990799594,49cyclictest30611-21munin-node23:00:151
1990799593,50cyclictest28611-21munin-node21:00:261
1990799593,49cyclictest12185-21munin-node20:15:251
1990799592,52cyclictest88750irq/45-eth0-rx-23:05:591
1990799592,51cyclictest23597-21chrt23:44:171
1990799592,49cyclictest31161-21telnet21:10:121
19907995914,38cyclictest7290-21sh22:20:091
19907995913,39cyclictest88750irq/45-eth0-rx-22:30:201
1990799585,48cyclictest0-21swapper/119:25:201
1990799585,48cyclictest0-21swapper/119:25:191
1990799584,48cyclictest18851-21munin-node20:35:171
1990799583,48cyclictest88750irq/45-eth0-rx-22:19:521
1990799583,48cyclictest24190-21munin-node19:20:201
1990799583,48cyclictest23020-21munin-node21:50:231
1990799583,47cyclictest22008-21ssh22:45:191
1990799582,51cyclictest88750irq/45-eth0-rx-21:20:141
1990799582,49cyclictest17717-21munin-node00:30:111
19907995812,37cyclictest2080-21munin-node21:15:181
1990699583,50cyclictest25323-21runrttasks20:53:230
1990699582,50cyclictest9788-21gltestperf20:10:170
1990799574,47cyclictest29205-21munin-node19:35:161
1990799573,48cyclictest27480-21cpuspeed19:30:151
1990799573,48cyclictest2280-21munin-node19:50:131
1990799573,48cyclictest14865-21munin-node00:25:131
19907995719,34cyclictest14701-21sshd23:28:361
1990699573,31cyclictest23690-21munin-run20:50:000
1990699562,48cyclictest29070-21munin-node19:35:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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