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2025-12-29 - 11:21
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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 rack5slot3.osadl.org (updated Mon Dec 29, 2025 00:50:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2467828950,9sleep20-21swapper/219:05:032
2702128348,31sleep70-21swapper/719:06:207
2716728259,19sleep50-21swapper/519:08:265
2706728249,29sleep60-21swapper/619:07:006
2704628045,30sleep30-21swapper/319:06:413
2713627945,30sleep10-21swapper/119:07:581
2698527742,30sleep00-21swapper/019:05:490
2698027762,10sleep40-21swapper/419:05:454
27712995010,40cyclictest0-21swapper/523:25:125
133162450,1sleep413319-21gltestperf21:25:164
67322440,0sleep70-21swapper/719:25:187
27713994444,0cyclictest0-21swapper/619:20:116
27714994141,0cyclictest0-21swapper/721:10:137
27714994141,0cyclictest0-21swapper/721:00:137
2770899410,41cyclictest0-21swapper/119:40:011
2771399390,38cyclictest0-21swapper/623:10:126
27710993910,29cyclictest0-21swapper/319:40:013
27709993937,1cyclictest0-21swapper/200:30:132
27708993939,0cyclictest0-21swapper/123:05:011
2770799390,39cyclictest0-21swapper/000:20:140
27712993837,0cyclictest0-21swapper/523:35:105
27712993737,0cyclictest0-21swapper/520:45:135
2770799370,0cyclictest0-21swapper/021:10:140
2771499360,35cyclictest0-21swapper/723:50:157
27713993636,0cyclictest0-21swapper/623:25:126
27712993636,0cyclictest0-21swapper/523:05:125
2771499350,34cyclictest0-21swapper/719:20:117
27711993534,0cyclictest0-21swapper/400:20:144
27708993535,0cyclictest0-21swapper/123:35:001
27708993535,0cyclictest0-21swapper/122:30:101
27707993534,0cyclictest0-21swapper/023:50:150
27711993434,0cyclictest0-21swapper/423:15:124
27710993434,0cyclictest0-21swapper/319:20:113
27709993433,0cyclictest0-21swapper/222:45:132
2771399330,0cyclictest0-21swapper/622:50:106
27712993333,0cyclictest0-21swapper/520:00:125
27711993333,0cyclictest0-21swapper/421:10:144
27707993331,1cyclictest0-21swapper/019:20:110
27709993231,0cyclictest0-21swapper/220:40:112
27712993110,2cyclictest0-21swapper/521:45:155
2771199310,0cyclictest0-21swapper/421:00:144
27710993131,0cyclictest0-21swapper/321:10:123
27708993131,0cyclictest0-21swapper/120:30:111
27708993130,0cyclictest0-21swapper/123:25:011
2770799310,30cyclictest0-21swapper/022:15:120
27714993029,0cyclictest0-21swapper/722:25:127
27713993030,0cyclictest0-21swapper/600:20:136
2771399300,29cyclictest25358-21apt-get23:35:016
27712993030,0cyclictest0-21swapper/521:15:135
27710993029,0cyclictest0-21swapper/323:10:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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