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2026-03-12 - 02:31
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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
Characteristics of the 50 highest latencies:
System rackdslot1.osadl.org (updated Wed Mar 11, 2026 12:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2170021310,5sleep11430599cyclictest12:00:241
134491810,9ptp4l13091-21ntp_states07:05:220
1430799722,28cyclictest0-21swapper/311:05:183
134491710,4ptp4l20275-21apt-get12:00:102
1430799690,28cyclictest16404-21taskset09:31:143
1430799680,65cyclictest32097-21sed07:45:223
1430799660,29cyclictest19228-21chrt10:47:293
1430799660,28cyclictest18655-21chrt08:27:333
1430799640,27cyclictest14610-21chrt10:37:263
134491640,5ptp4l0-21swapper/208:05:132
134491630,4ptp4l25128-21ps09:50:232
1430799620,28cyclictest4993-21taskset07:59:393
134491620,16ptp4l23937-21switchtime12:05:242
1430799612,17cyclictest0-21swapper/308:55:153
1430799612,17cyclictest0-21swapper/308:55:153
1430799610,28cyclictest3672-21taskset12:33:033
1430799610,27cyclictest27964-21taskset07:38:123
1430799610,27cyclictest25763-21taskset07:34:283
134491610,3ptp4l24509-21apt-get11:00:112
134491600,4ptp4l0-21swapper/212:31:282
134491600,4ptp4l0-21swapper/211:28:462
1430799590,29cyclictest11734-21taskset08:12:313
134491590,4ptp4l31836-21apt-get12:25:112
134491590,3ptp4l0-21swapper/309:20:043
1430799580,28cyclictest23146-21taskset08:36:103
1430799580,28cyclictest13970-21taskset08:16:433
1430799580,27cyclictest8263-21taskset11:34:463
1430799580,27cyclictest21093-21taskset07:23:293
134491580,5ptp4l0-21swapper/208:25:122
134491580,4ptp4l0-21swapper/208:30:222
1430799570,28cyclictest24132-21taskset10:58:393
1430799570,27cyclictest21442-21taskset07:25:063
1430799570,26cyclictest26325-21taskset11:02:093
134491570,4ptp4l0-21swapper/212:12:312
134491570,4ptp4l0-21swapper/210:55:002
134491570,3ptp4l0-21swapper/211:35:152
134491570,3ptp4l0-21swapper/210:56:112
1430799563,17cyclictest134491ptp4l08:05:263
1430799560,29cyclictest593-21taskset10:08:403
1430799560,28cyclictest23320-21taskset09:45:423
1430799560,27cyclictest18564-21taskset07:18:313
134491560,4ptp4l0-21swapper/211:43:422
134491560,4ptp4l0-21swapper/210:35:482
134491560,4ptp4l0-21swapper/210:25:542
134491560,4ptp4l0-21swapper/209:00:272
1430799550,28cyclictest21021-21taskset08:33:183
1430799550,28cyclictest16546-21taskset08:24:513
1430799550,27cyclictest2788-21taskset10:11:123
1430799550,17cyclictest134491ptp4l09:50:223
134491550,5ptp4l0-21swapper/107:09:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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