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2025-11-07 - 20:41
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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 Fri Nov 07, 2025 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2847191780,3ptp4l0-21swapper/209:05:192
56292750,4sleep20-21swapper/208:00:172
2847191660,4ptp4l14287-21apt-get07:10:132
2847191660,3ptp4l27324-21apt-get12:15:123
2847191650,4ptp4l10800-21perl09:20:163
2847191630,4ptp4l0-21swapper/109:29:461
2847191620,5ptp4l9720-21grep10:25:270
126932620,4sleep20-21swapper/209:25:132
2847191610,4ptp4l0-21swapper/108:34:141
2847191600,4ptp4l0-21swapper/310:13:023
2847191600,4ptp4l0-21swapper/008:38:220
2847191590,4ptp4l0-21swapper/311:20:203
2847191570,4ptp4l0-21swapper/208:15:212
2847191570,3ptp4l0-21swapper/309:37:393
2847191560,4ptp4l0-21swapper/210:23:022
2847191550,5ptp4l0-21swapper/007:05:260
2847191550,4ptp4l0-21swapper/309:56:573
2847191550,4ptp4l0-21swapper/309:43:193
2847191550,4ptp4l0-21swapper/209:50:062
2847191550,3ptp4l0-21swapper/211:49:442
2847191550,17ptp4l0-21swapper/208:51:172
2847191540,4ptp4l0-21swapper/308:19:513
2847191540,12ptp4l0-21swapper/307:29:303
2847191530,5ptp4l13815-21perl11:45:180
2847191530,4ptp4l0-21swapper/307:34:293
2847191530,4ptp4l0-21swapper/208:35:272
2847191530,4ptp4l0-21swapper/011:01:160
2847191520,4ptp4l0-21swapper/309:10:293
2847191520,4ptp4l0-21swapper/208:26:552
2847191520,4ptp4l0-21swapper/110:10:271
2847191520,4ptp4l0-21swapper/009:07:590
2847191520,3ptp4l0-21swapper/207:07:372
2847191520,3ptp4l0-21swapper/010:06:140
2847191520,3ptp4l0-21swapper/008:10:390
2847191520,3ptp4l0-21swapper/008:10:380
2847191510,4ptp4l0-21swapper/212:20:192
2847191510,4ptp4l0-21swapper/208:14:562
2847191510,4ptp4l0-21swapper/208:14:552
2847191510,4ptp4l0-21swapper/012:20:230
2847191510,4ptp4l0-21swapper/012:19:520
2847191510,4ptp4l0-21swapper/011:08:240
2847191510,10ptp4l0-21swapper/312:10:163
2847191500,5ptp4l25-21ksoftirqd/110:41:221
2847191500,4ptp4l0-21swapper/307:24:463
2847191500,4ptp4l0-21swapper/210:15:562
2847191500,4ptp4l0-21swapper/011:36:560
2847191500,4ptp4l0-21swapper/011:36:560
2847191500,11ptp4l12482-21iostat07:05:181
2847191490,4ptp4l0-21swapper/209:58:522
2847191490,4ptp4l0-21swapper/107:18:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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