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2026-05-07 - 08:07
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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 highest latencies:
System rack1slot8.osadl.org (updated Thu May 07, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
44712628603,16sleep00-21swapper/019:07:190
477799415356,27cyclictest0-21swapper/119:11:301
477799390310,49cyclictest0-21swapper/121:46:551
477699355293,53cyclictest0-21swapper/019:11:300
47769912711,109cyclictest0-21swapper/022:05:590
1194621200,3sleep011947-21tr23:55:200
4563211998,14sleep10-21swapper/119:08:141
47769910378,19cyclictest0-21swapper/000:11:590
4777999917,32cyclictest0-21swapper/121:41:591
228699960,2rtkit-daemon0-21swapper/021:31:270
269212950,7sleep1271ktimersoftd/122:25:261
4777999417,34cyclictest0-21swapper/121:15:001
264892940,4sleep126490-21latency_hist20:10:011
4777999318,34cyclictest0-21swapper/120:14:591
4777999213,41cyclictest0-21swapper/120:02:591
4777999117,34cyclictest0-21swapper/120:35:001
4777999117,33cyclictest0-21swapper/119:54:591
4777999113,38cyclictest0-21swapper/120:47:591
4777999016,36cyclictest0-21swapper/123:13:001
477699907,53cyclictest0-21swapper/021:46:550
4776999011,73cyclictest0-21swapper/022:17:590
4776999011,73cyclictest0-21swapper/022:17:590
4777998819,30cyclictest0-21swapper/120:29:591
4777998815,33cyclictest0-21swapper/121:03:591
4777998617,37cyclictest0-21swapper/121:36:591
4777998617,36cyclictest0-21swapper/121:54:591
4777998615,34cyclictest0-21swapper/123:30:001
228699850,4rtkit-daemon32117-21ssh00:31:061
228699850,4rtkit-daemon32117-21ssh00:31:061
228699850,3rtkit-daemon14244-21ssh22:03:381
4777998419,30cyclictest0-21swapper/121:31:591
4776998412,54cyclictest0-21swapper/022:21:590
228699840,5rtkit-daemon2285-21rtkit-daemon23:32:350
228699790,4rtkit-daemon2285-21rtkit-daemon22:51:241
228699790,13rtkit-daemon2285-21rtkit-daemon23:51:001
228699780,12rtkit-daemon2285-21rtkit-daemon00:28:011
228699770,12rtkit-daemon2285-21rtkit-daemon21:16:421
228699760,4rtkit-daemon2285-21rtkit-daemon23:39:501
228699760,4rtkit-daemon2285-21rtkit-daemon23:31:351
4776997521,49cyclictest17619-21rm21:11:590
4776997511,51cyclictest0-21swapper/023:04:000
228699750,4rtkit-daemon2285-21rtkit-daemon22:12:181
4776997419,43cyclictest16915-21vmstat19:40:260
228699740,5rtkit-daemon2285-21rtkit-daemon00:15:001
228699740,4rtkit-daemon2285-21rtkit-daemon23:55:151
228699740,4rtkit-daemon2285-21rtkit-daemon23:00:191
228699740,4rtkit-daemon2285-21rtkit-daemon22:19:381
228699740,4rtkit-daemon2285-21rtkit-daemon22:19:381
4777997314,47cyclictest0-21swapper/122:22:591
4776997320,36cyclictest0-21swapper/020:06:590
477699732,63cyclictest19952-21ssh22:14:120
4776997312,45cyclictest1274-21latency_hist20:30:020
228699730,4rtkit-daemon2285-21rtkit-daemon00:10:001
4777997215,51cyclictest0-21swapper/119:42:591
228699720,4rtkit-daemon2285-21rtkit-daemon19:35:261
4776997132,29cyclictest0-21swapper/023:10:010
4776997132,29cyclictest0-21swapper/023:10:010
228699710,4rtkit-daemon2285-21rtkit-daemon21:25:121
228699710,4rtkit-daemon2285-21rtkit-daemon00:04:551
4776997039,25cyclictest0-21swapper/022:26:470
4776997038,25cyclictest0-21swapper/021:55:140
4776997034,29cyclictest0-21swapper/021:52:050
4776997017,38cyclictest0-21swapper/019:29:590
4777996921,35cyclictest0-21swapper/122:00:001
4776996947,14cyclictest0-21swapper/020:35:140
4776996916,47cyclictest88850irq/46-eth0-tx-21:38:460
4777996821,37cyclictest0-21swapper/123:20:591
4777996816,32cyclictest0-21swapper/120:21:591
4776996844,17cyclictest0-21swapper/022:45:120
477699682,59cyclictest20837-21runrttasks21:18:000
228699680,4rtkit-daemon2285-21rtkit-daemon23:25:050
4777996719,35cyclictest0-21swapper/122:59:591
4777996717,33cyclictest0-21swapper/120:55:001
4777996714,38cyclictest0-21swapper/120:45:001
477699672,59cyclictest15778-21diskmemload00:24:320
477699672,49cyclictest24613-21latency_hist20:05:010
477699672,48cyclictest15778-21diskmemload00:35:280
4776996719,33cyclictest0-21swapper/022:56:000
4776996714,34cyclictest0-21swapper/020:20:590
4776996713,48cyclictest88850irq/46-eth0-tx-00:27:380
4776996642,17cyclictest0-21swapper/022:03:120
4776996637,22cyclictest0-21swapper/021:20:490
477699663,30cyclictest3144-21munin-run20:35:010
4776996627,33cyclictest0-21swapper/022:35:170
4776996620,39cyclictest0-21swapper/023:40:170
477699662,57cyclictest23942-21runrttasks00:16:380
4776996614,45cyclictest0-21swapper/000:06:560
4776996610,39cyclictest10068-21latency_hist22:55:010
228699660,4rtkit-daemon27540-21ssh00:24:261
4777996517,37cyclictest0-21swapper/100:36:001
4777996517,34cyclictest0-21swapper/122:47:001
4777996517,33cyclictest0-21swapper/120:16:591
4777996515,35cyclictest0-21swapper/100:15:581
4777996515,31cyclictest0-21swapper/121:20:591
4777996513,36cyclictest0-21swapper/119:32:001
4776996538,20cyclictest0-21swapper/023:15:000
4776996536,23cyclictest0-21swapper/021:43:510
477699652,48cyclictest27336-21latency_hist21:30:010
4776996517,34cyclictest0-21swapper/019:16:590
4777996420,32cyclictest0-21swapper/123:16:591
4777996417,33cyclictest0-21swapper/122:40:001
4777996416,35cyclictest0-21swapper/121:08:591
4777996414,38cyclictest0-21swapper/120:59:591
4776996443,15cyclictest0-21swapper/000:30:130
4776996443,15cyclictest0-21swapper/000:30:130
4776996441,16cyclictest0-21swapper/020:45:140
477699644,54cyclictest0-21swapper/023:19:440
477699642,56cyclictest3430-21ssh22:41:190
477699642,55cyclictest27435-21find20:10:230
4776996417,36cyclictest0-21swapper/019:57:000
4776996414,44cyclictest0-21swapper/020:52:000
228699640,4rtkit-daemon2285-21rtkit-daemon22:41:291
4777996331,23cyclictest0-21swapper/123:47:591
4777996317,35cyclictest0-21swapper/119:58:001
4777996315,33cyclictest0-21swapper/123:43:591
4776996342,15cyclictest0-21swapper/000:00:240
477699632,55cyclictest8790-21runrttasks23:50:150
477699632,54cyclictest17832-21df_abs19:45:140
477699632,33cyclictest30024-21idleruntime-cro20:20:010
4776996316,33cyclictest0-21swapper/020:41:590
4776996313,43cyclictest88850irq/46-eth0-tx-22:30:150
4777996217,31cyclictest0-21swapper/119:25:591
4777996215,34cyclictest0-21swapper/119:21:001
4777996214,33cyclictest0-21swapper/123:07:591
4777996214,33cyclictest0-21swapper/123:07:591
4777996213,37cyclictest0-21swapper/119:15:591
477699622,53cyclictest2592-21ssh23:39:300
477699622,50cyclictest9177-21needreboot19:20:190
4776996212,37cyclictest0-21swapper/021:03:000
477699612,53cyclictest7237-21ksmtuned23:46:290
4776996113,43cyclictest88850irq/46-eth0-tx-23:20:540
4777996012,36cyclictest0-21swapper/119:47:591
4776996039,15cyclictest0-21swapper/020:55:270
4776996016,31cyclictest0-21swapper/019:30:590
228699600,4rtkit-daemon2285-21rtkit-daemon22:30:241
4777995916,30cyclictest0-21swapper/122:07:591
477699593,50cyclictest20174-21processes19:50:200
477699592,51cyclictest14070-21cut19:35:130
477699592,31cyclictest14132-21munin-node21:05:210
4777995414,30cyclictest0-21swapper/120:37:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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