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2026-06-15 - 16:33
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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 Mon Jun 15, 2026 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2661821580,3sleep1173899cyclictest23:30:171
2675321440,3sleep2173999cyclictest21:10:212
267321400,3sleep1173899cyclictest20:20:141
2452721340,3sleep3174099cyclictest22:15:213
173799613,15cyclictest0-21swapper/021:20:270
134491610,4ptp4l0-21swapper/219:39:382
134491600,4ptp4l0-21swapper/219:50:052
134491590,9ptp4l0-21swapper/223:30:582
134491590,4ptp4l0-21swapper/220:15:252
134491590,3ptp4l0-21swapper/021:50:260
134491590,3ptp4l0-21swapper/021:50:260
134491580,4ptp4l0-21swapper/223:59:552
134491580,4ptp4l0-21swapper/223:59:552
134491580,4ptp4l0-21swapper/221:51:422
134491580,4ptp4l0-21swapper/221:51:422
134491580,4ptp4l0-21swapper/221:33:542
134491580,4ptp4l0-21swapper/219:21:572
134491580,4ptp4l0-21swapper/122:30:221
134491580,4ptp4l0-21swapper/121:56:581
134491580,3ptp4l0-21swapper/020:45:270
134491570,4ptp4l0-21swapper/300:31:243
134491570,4ptp4l0-21swapper/300:31:243
134491570,4ptp4l0-21swapper/223:26:462
134491570,4ptp4l0-21swapper/223:26:462
134491570,4ptp4l0-21swapper/219:28:572
134491570,4ptp4l0-21swapper/022:53:460
134491570,3ptp4l0-21swapper/320:40:273
134491560,4ptp4l0-21swapper/221:49:102
134491560,4ptp4l0-21swapper/122:01:071
134491560,4ptp4l0-21swapper/000:18:430
134491560,3ptp4l0-21swapper/100:35:171
134491560,2ptp4l1736-21cyclictest22:45:372
134491550,4ptp4l0-21swapper/222:41:262
134491550,4ptp4l0-21swapper/200:28:452
134491550,4ptp4l0-21swapper/122:19:431
134491550,3ptp4l0-21swapper/222:55:282
134491550,3ptp4l0-21swapper/121:50:281
134491550,3ptp4l0-21swapper/121:50:281
134491540,4ptp4l0-21swapper/321:49:133
134491540,4ptp4l0-21swapper/221:38:182
134491540,4ptp4l0-21swapper/200:34:132
134491540,4ptp4l0-21swapper/200:34:132
134491540,3ptp4l0-21swapper/219:30:202
134491540,3ptp4l0-21swapper/023:56:330
134491540,3ptp4l0-21swapper/023:56:330
134491540,3ptp4l0-21swapper/000:32:310
134491540,3ptp4l0-21swapper/000:32:310
173799530,4cyclictest134491ptp4l21:05:150
134491530,4ptp4l0-21swapper/219:17:512
134491530,4ptp4l0-21swapper/200:12:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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