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2026-04-02 - 09:24
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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 50 highest latencies:
System rack3slot6.osadl.org (updated Thu Apr 02, 2026 00:44:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15318999211,17cyclictest0-21swapper/023:40:130
1531899898,36cyclictest723-21taskset21:30:140
15318998917,64cyclictest0-21swapper/019:30:130
15330998643,28cyclictest26-21ksoftirqd/120:30:121
284612850,4sleep036-21kcompactd000:15:310
15318998534,18cyclictest0-21swapper/020:50:110
15318998357,13cyclictest0-21swapper/020:25:120
1357728240,25sleep10-21swapper/119:05:151
15330998140,28cyclictest26-21ksoftirqd/121:00:141
15318998063,9cyclictest14-21ksoftirqd/000:05:100
1533099796,67cyclictest0-21swapper/100:10:191
1533099796,32cyclictest0-21swapper/120:45:121
1533099795,21cyclictest717-21apt-get21:30:151
15318997860,10cyclictest14-21ksoftirqd/023:50:150
1499327815,53sleep00-21swapper/019:08:340
15318997758,13cyclictest0-21swapper/020:05:130
15330997621,17cyclictest15901-21cut22:10:361
15318997649,17cyclictest0-21swapper/019:15:110
15318997517,51cyclictest0-21swapper/021:40:120
15330997421,18cyclictest6139-21cron21:45:001
15330997324,17cyclictest28444-21ntpq00:15:281
15318997345,14cyclictest0-21swapper/019:10:230
86302720,6sleep00-21swapper/020:20:180
15330997235,8cyclictest26-21ksoftirqd/100:25:421
15330997225,14cyclictest8949-21sed20:20:271
1531899729,56cyclictest548-21runrttasks20:30:120
15318997256,9cyclictest14-21ksoftirqd/020:55:130
15318997243,16cyclictest14-21ksoftirqd/000:35:110
15318997229,38cyclictest0-21swapper/022:05:140
15318997217,49cyclictest0-21swapper/023:55:130
1533099716,25cyclictest26-21ksoftirqd/120:19:221
1533099715,11cyclictest0-21swapper/123:25:321
15330997124,14cyclictest6238-21date23:15:001
15318997143,15cyclictest14-21ksoftirqd/022:20:140
15330997032,8cyclictest26-21ksoftirqd/123:43:171
15318997046,13cyclictest14-21ksoftirqd/022:30:130
15318997045,13cyclictest14-21ksoftirqd/019:45:140
15318996931,32cyclictest14-21ksoftirqd/023:45:250
15318996913,50cyclictest0-21swapper/019:20:140
15330996829,10cyclictest13850irq/14-ata_piix00:35:011
15318996828,36cyclictest14-21ksoftirqd/021:20:170
15318996340,19cyclictest14-21ksoftirqd/022:50:220
15318996335,15cyclictest0-21swapper/022:00:120
15318996333,17cyclictest0-21swapper/022:45:130
15330996210,40cyclictest0-21swapper/120:01:491
1531899627,45cyclictest31962-21apt-get19:55:120
15318996247,9cyclictest14-21ksoftirqd/019:50:330
15318996234,18cyclictest14-21ksoftirqd/000:30:150
15318996225,32cyclictest250-21systemd-journal21:51:260
15330996128,24cyclictest26-21ksoftirqd/120:05:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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