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2026-06-16 - 22:52
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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 rack1slot8.osadl.org (updated Tue Jun 16, 2026 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2649399868805,44cyclictest4231-21sendmail_mailst07:35:251
2649299847763,47cyclictest3357-21munin-node07:35:250
2649399412348,47cyclictest0-21swapper/107:10:081
2649299362300,52cyclictest0-21swapper/007:10:080
26492999713,70cyclictest0-21swapper/007:16:590
26492999614,76cyclictest0-21swapper/010:53:580
2649299935,16cyclictest0-21swapper/008:37:000
26492999313,62cyclictest0-21swapper/008:15:000
26492999013,61cyclictest0-21swapper/008:42:590
26492998868,11cyclictest32721-21kworker/0:012:11:590
26492998516,63cyclictest0-21swapper/009:59:590
26492998513,55cyclictest0-21swapper/007:54:000
228699850,3rtkit-daemon15452-21ssh09:26:411
2649299845,59cyclictest0-21swapper/008:23:590
228699830,5rtkit-daemon2285-21rtkit-daemon10:32:510
26492998121,45cyclictest0-21swapper/008:52:590
2632328014,28sleep10-21swapper/107:08:431
228699780,5rtkit-daemon2285-21rtkit-daemon09:10:150
274962770,3sleep127494-21ssh11:45:151
2649299775,54cyclictest0-21swapper/008:10:000
2649299762,6cyclictest7552-21latency_hist11:10:020
228699760,3rtkit-daemon2285-21rtkit-daemon07:30:230
2649299746,50cyclictest0-21swapper/009:45:120
2649299742,6cyclictest3254-21ssh12:00:110
2649299742,6cyclictest10650-21unixbench_multi10:15:260
2649299735,35cyclictest0-21swapper/011:56:020
2649299733,7cyclictest4780-21munin-run11:05:000
2649299732,7cyclictest19838-21ssh09:35:160
2649299732,7cyclictest14859-21crond10:24:590
228699730,11rtkit-daemon13799-21ssh12:18:580
2649299728,37cyclictest761-13audispd10:15:000
2649299722,7cyclictest1349-21latency_hist07:30:010
2649299722,6cyclictest31886-21crond07:25:010
26492997129,36cyclictest0-21swapper/012:40:000
2649299712,7cyclictest5214-21diskmemload10:07:040
2649299712,7cyclictest11170-21cpuspeed09:20:150
26492997114,43cyclictest8250irq/14-pata_sch08:30:000
2649299705,58cyclictest0-21swapper/012:06:300
2649299705,58cyclictest0-21swapper/012:06:290
2649299702,7cyclictest22162-21sh10:36:350
2649299702,6cyclictest17335-21runrttasks09:30:190
26492997013,50cyclictest17965-21ps12:25:250
26492997011,51cyclictest0-21swapper/011:50:180
2649299695,49cyclictest0-21swapper/010:57:120
2649299693,7cyclictest3760-21idleruntime-cro10:05:000
2649299693,7cyclictest28451-21runrttasks09:50:180
2649299692,60cyclictest14546-21ssh11:20:300
2649299687,7cyclictest88850irq/46-eth0-tx-11:45:280
2649299685,55cyclictest0-21swapper/011:19:360
2649299685,52cyclictest0-21swapper/010:40:340
2649299683,59cyclictest24466-21ssh09:43:230
2649299682,7cyclictest6773-21kworker/0:210:45:290
2649299682,7cyclictest24854-21idleruntime-cro08:35:000
2649299682,59cyclictest14392-21ssh12:20:130
2532126830,22sleep00-21swapper/007:05:160
2649299679,7cyclictest88850irq/46-eth0-tx-11:35:270
2649299679,52cyclictest88850irq/46-eth0-tx-11:34:040
2649299677,53cyclictest8990-21processes09:15:250
2649299675,9cyclictest0-21swapper/009:25:070
2649299673,7cyclictest15397-21ssh10:25:160
2649299672,7cyclictest24720-21ssh11:40:160
228699670,4rtkit-daemon2285-21rtkit-daemon08:42:141
26493996622,19cyclictest0-21swapper/112:35:581
2649299662,7cyclictest5252-21cat09:10:010
2649299662,7cyclictest2542-21proc_pri09:00:230
2649299662,7cyclictest20974-21unixbench_multi12:30:260
2649299662,48cyclictest18647-21idleruntime-cro11:30:010
2649299655,53cyclictest0-21swapper/011:10:480
2649299653,7cyclictest12372-21munin-node08:00:110
2649299642,7cyclictest11436-21find07:55:240
65192630,3sleep16601-21munin-node12:05:211
65192630,3sleep16601-21munin-node12:05:201
2649299633,6cyclictest7907-21switchtime07:45:240
2649299632,6cyclictest29926-21runrttasks08:46:400
2649299632,6cyclictest1077-21runrttasks08:55:510
2649299626,49cyclictest0-21swapper/007:40:160
2649299622,7cyclictest17785-21runrttasks08:15:030
26493996137,17cyclictest0-21swapper/109:36:001
228699610,4rtkit-daemon2285-21rtkit-daemon10:20:261
228699600,5rtkit-daemon2285-21rtkit-daemon09:00:151
228699580,4rtkit-daemon2285-21rtkit-daemon12:30:141
228699580,4rtkit-daemon2285-21rtkit-daemon08:00:241
228699570,4rtkit-daemon2285-21rtkit-daemon07:34:431
54312566,10sleep10-21swapper/110:06:151
228699560,4rtkit-daemon2285-21rtkit-daemon08:33:191
228699560,4rtkit-daemon2285-21rtkit-daemon08:19:051
26493995518,31cyclictest0-21swapper/109:12:591
228699550,4rtkit-daemon2285-21rtkit-daemon10:35:271
228699550,4rtkit-daemon2285-21rtkit-daemon08:46:251
26493995411,37cyclictest0-21swapper/112:01:581
228699540,4rtkit-daemon2285-21rtkit-daemon07:29:191
228699540,4rtkit-daemon2285-21rtkit-daemon07:21:481
26493995320,27cyclictest0-21swapper/109:43:581
26493995318,29cyclictest0-21swapper/110:32:581
26493995317,29cyclictest0-21swapper/112:11:001
26493995315,32cyclictest0-21swapper/112:21:001
155472535,10sleep10-21swapper/111:23:551
101302537,10sleep10-21swapper/107:52:151
265482520,12sleep10-21swapper/109:46:051
26493995218,28cyclictest0-21swapper/111:54:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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