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2026-05-06 - 12:30
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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 rack3slot6.osadl.org (updated Wed May 06, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
312519911783,22cyclictest26-21ksoftirqd/120:55:111
312439911314,32cyclictest0-21swapper/022:25:130
312439911212,30cyclictest0-21swapper/022:20:130
312439911113,34cyclictest0-21swapper/019:55:120
312519911066,32cyclictest26-21ksoftirqd/120:00:151
31243991107,52cyclictest24608-21taskset23:25:120
312439911012,28cyclictest0-21swapper/022:35:130
312519910934,29cyclictest0-21swapper/119:35:141
312439910913,35cyclictest0-21swapper/020:00:110
2878621090,7chrt28787-21latency_hist22:05:000
312439910524,25cyclictest0-21swapper/021:20:130
312439910512,30cyclictest0-21swapper/021:25:150
31251999950,34cyclictest26-21ksoftirqd/100:15:151
31251999948,33cyclictest26-21ksoftirqd/120:05:131
31251999811,26cyclictest0-21swapper/119:45:131
31251999714,60cyclictest0-21swapper/123:00:151
31251999635,47cyclictest26-21ksoftirqd/120:35:131
31251999511,62cyclictest0-21swapper/121:50:121
31251999413,64cyclictest0-21swapper/122:15:131
31251999413,63cyclictest0-21swapper/120:30:121
31251999412,58cyclictest0-21swapper/123:50:131
31251999313,57cyclictest0-21swapper/119:20:131
31251999312,58cyclictest0-21swapper/122:05:111
31251999311,61cyclictest0-21swapper/120:25:111
31251999213,58cyclictest0-21swapper/119:55:141
31251999212,60cyclictest0-21swapper/120:40:231
31251999210,57cyclictest0-21swapper/120:10:141
3125199916,59cyclictest9989-21runrttasks19:40:111
31251999112,56cyclictest0-21swapper/100:10:131
31251999111,22cyclictest0-21swapper/119:10:151
31251999011,56cyclictest0-21swapper/121:15:151
31251999011,54cyclictest0-21swapper/121:05:151
31251998837,33cyclictest26-21ksoftirqd/120:50:131
31251998836,33cyclictest0-21swapper/122:55:111
31251998811,53cyclictest0-21swapper/123:45:151
31251998712,54cyclictest0-21swapper/122:25:151
31251998712,54cyclictest0-21swapper/121:45:131
3125199866,60cyclictest801-21gpm23:30:131
3125199866,60cyclictest801-21gpm23:30:131
31251998622,42cyclictest26-21ksoftirqd/100:05:141
31251998613,51cyclictest0-21swapper/121:55:131
31251998521,48cyclictest0-21swapper/100:20:171
31251998521,48cyclictest0-21swapper/100:20:171
31251998516,47cyclictest0-21swapper/120:15:111
31251998513,52cyclictest0-21swapper/123:15:121
31251998511,56cyclictest0-21swapper/120:20:141
31251998511,51cyclictest0-21swapper/100:00:131
31251998412,51cyclictest0-21swapper/119:15:131
31251998334,29cyclictest0-21swapper/123:35:231
31251998333,31cyclictest0-21swapper/119:30:121
31251998333,29cyclictest0-21swapper/122:00:161
31251998331,32cyclictest0-21swapper/122:20:111
31251998321,45cyclictest0-21swapper/122:40:111
31251998315,50cyclictest0-21swapper/121:35:131
31251998236,26cyclictest0-21swapper/121:40:151
31251998234,28cyclictest0-21swapper/121:10:121
31251998231,32cyclictest0-21swapper/121:00:151
31251998134,28cyclictest0-21swapper/123:55:141
31251998130,30cyclictest0-21swapper/100:25:141
31251998116,47cyclictest0-21swapper/121:20:121
31251998115,48cyclictest0-21swapper/122:50:131
31251998114,47cyclictest0-21swapper/121:30:221
31251998112,50cyclictest0-21swapper/123:20:111
31251998112,50cyclictest0-21swapper/123:20:111
31251998110,52cyclictest0-21swapper/122:10:121
31251998035,28cyclictest0-21swapper/122:35:151
31251998031,29cyclictest0-21swapper/122:30:151
31251997913,47cyclictest0-21swapper/119:50:141
31243997931,39cyclictest14-21ksoftirqd/019:55:010
3021227935,31sleep10-21swapper/119:05:311
31251997832,28cyclictest0-21swapper/122:45:141
31251997832,26cyclictest0-21swapper/100:30:131
31251997814,48cyclictest0-21swapper/120:45:131
3124399788,59cyclictest11814-21apt-get00:20:160
3124399788,59cyclictest11814-21apt-get00:20:160
31251997715,45cyclictest0-21swapper/123:10:141
31251997713,45cyclictest0-21swapper/121:25:121
31251997628,29cyclictest0-21swapper/123:40:101
31251997614,45cyclictest0-21swapper/100:35:121
31251997614,45cyclictest0-21swapper/100:35:121
31251997529,27cyclictest0-21swapper/119:25:131
3093227124,38sleep00-21swapper/019:08:450
31243996929,33cyclictest14-21ksoftirqd/000:15:370
31251996811,41cyclictest0-21swapper/123:25:151
3124399685,44cyclictest0-21swapper/020:36:260
31251996727,23cyclictest0-21swapper/123:05:151
31243996728,32cyclictest14-21ksoftirqd/023:50:010
31243996612,34cyclictest0-21swapper/020:25:130
3124399646,47cyclictest10600-21apt-get22:45:120
31243996434,18cyclictest14-21ksoftirqd/020:33:110
3124399636,47cyclictest9984-21apt-get19:40:110
3124399636,47cyclictest2989-21apt-get23:55:110
31243996338,19cyclictest14-21ksoftirqd/022:05:140
3124399624,49cyclictest9242-21diskmemload21:10:190
31243996242,11cyclictest14-21ksoftirqd/022:30:120
31243996235,21cyclictest14-21ksoftirqd/023:35:010
31243996235,21cyclictest14-21ksoftirqd/023:35:010
3124399617,46cyclictest2907-21apt-get19:20:120
31243996116,37cyclictest17921-21/usr/sbin/munin23:05:240
31243996029,24cyclictest14-21ksoftirqd/020:10:200
31243996017,18cyclictest243-21systemd-journal20:41:360
3124399597,22cyclictest11147-21apt-get21:15:130
31243995942,11cyclictest503-21snmpd22:16:370
31243995942,11cyclictest503-21snmpd20:51:360
31243995941,11cyclictest14-21ksoftirqd/022:45:000
3124399593,22cyclictest25285-21cron21:55:010
31243995922,30cyclictest13583-21aten2.4-expect00:25:160
31243995920,33cyclictest7715-21aten2.4-expect21:05:180
3124399584,14cyclictest27029-21munin-run22:00:000
31243995840,11cyclictest14-21ksoftirqd/023:25:010
31243995840,11cyclictest14-21ksoftirqd/023:25:010
31243995840,11cyclictest14-21ksoftirqd/020:25:000
31243995840,10cyclictest14-21ksoftirqd/019:27:200
31243995840,10cyclictest14-21ksoftirqd/000:15:000
31243995839,13cyclictest14-21ksoftirqd/021:40:000
3124399583,49cyclictest7410-21runrttasks21:04:430
3124399583,48cyclictest2209-21munin-run20:50:000
31243995833,19cyclictest14-21ksoftirqd/019:15:180
3124399579,11cyclictest0-21swapper/021:30:410
31243995741,10cyclictest14-21ksoftirqd/019:37:340
31243995741,10cyclictest14-21ksoftirqd/019:30:170
31243995740,11cyclictest14-21ksoftirqd/022:15:010
31243995740,10cyclictest14-21ksoftirqd/023:55:010
31243995740,10cyclictest14-21ksoftirqd/021:40:210
31243995740,10cyclictest14-21ksoftirqd/000:39:190
31243995740,10cyclictest14-21ksoftirqd/000:39:190
31243995739,11cyclictest14-21ksoftirqd/022:50:390
31243995736,17cyclictest14-21ksoftirqd/023:15:160
31243995727,22cyclictest243-21systemd-journal19:45:370
31243995714,21cyclictest14-21ksoftirqd/023:42:160
31243995639,10cyclictest14-21ksoftirqd/021:00:010
31243995638,10cyclictest14-21ksoftirqd/000:35:000
31243995632,19cyclictest14-21ksoftirqd/023:35:280
31243995536,11cyclictest14-21ksoftirqd/020:20:010
31243995533,17cyclictest14-21ksoftirqd/021:45:150
31243995528,22cyclictest14-21ksoftirqd/019:10:380
3124399546,43cyclictest0-21swapper/000:00:400
31243995437,11cyclictest14-21ksoftirqd/020:10:000
31243995437,10cyclictest14-21ksoftirqd/023:10:310
31243995437,10cyclictest14-21ksoftirqd/022:55:140
3124399535,42cyclictest0-21swapper/023:00:340
31243995215,32cyclictest6621-21aten2.4-expect00:05:170
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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