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2026-08-11 - 09:43
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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 100 highest latencies:
System rackdslot1.osadl.org (updated Tue Aug 11, 2026 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3081199690,25cyclictest32680-21tr21:30:240
3081199670,22cyclictest18110-21cut19:50:190
3081199651,25cyclictest3333-21runrttasks23:55:320
3081199650,27cyclictest5775-21seq00:02:100
3081199620,31cyclictest10347-21cron20:45:000
134491620,3ptp4l1653-21apt-get22:45:141
3081199611,25cyclictest31417-21seq23:49:470
3081199610,26cyclictest7440-21seq19:29:470
3081199610,25cyclictest26538-21seq21:17:460
3081199602,23cyclictest0-21swapper/000:07:520
3081199601,28cyclictest19553-21seq21:02:180
3081199601,27cyclictest28716-21runrttasks22:31:560
3081199601,26cyclictest12594-21seq20:49:220
3081199600,26cyclictest30823-21seq20:15:440
3081199600,26cyclictest26789-21seq20:10:020
3081199600,25cyclictest5750-21seq21:43:050
3081199600,25cyclictest10269-21seq21:52:120
3081199600,24cyclictest24217-21taskset21:12:320
134491600,6ptp4l25-21ksoftirqd/119:10:561
134491600,5ptp4l0-21swapper/123:00:201
134491600,5ptp4l0-21swapper/123:00:201
3081399592,2cyclictest0-21swapper/223:10:282
3081199592,26cyclictest26399-21seq22:26:430
3081199592,22cyclictest0-21swapper/023:32:500
3081199590,27cyclictest681-21seq19:15:060
3081199590,27cyclictest23780-21seq20:01:350
3081199590,26cyclictest10603-21seq00:12:380
134491590,4ptp4l0-21swapper/322:28:303
3081199582,22cyclictest0-21swapper/023:43:060
3081199582,22cyclictest0-21swapper/019:33:210
3081199582,22cyclictest0-21swapper/000:31:230
3081199580,26cyclictest31154-21seq22:38:380
3081199580,25cyclictest8038-21taskset21:47:570
3081199580,24cyclictest7765-21runrttasks20:36:420
3081199580,24cyclictest15092-21seq23:12:550
134491580,3ptp4l0-21swapper/321:45:433
3081199572,21cyclictest0-21swapper/023:04:590
3081199572,21cyclictest0-21swapper/023:04:590
3081199571,27cyclictest1300-21seq22:44:040
3081199570,27cyclictest19646-21seq22:14:230
3081199570,25cyclictest835-21seq20:22:140
134491570,4ptp4l0-21swapper/300:10:283
134491570,3ptp4l0-21swapper/121:00:151
3081199562,23cyclictest0-21swapper/021:29:510
3081199562,23cyclictest0-21swapper/021:29:500
3081199562,22cyclictest0-21swapper/019:56:320
3081199562,22cyclictest0-21swapper/000:30:000
3081199560,27cyclictest24243-21seq22:23:260
3081199560,27cyclictest21830-21seq22:17:160
3081199560,25cyclictest5085-21seq19:24:010
3081199560,25cyclictest5085-21seq19:24:010
3081199560,25cyclictest12760-21seq00:15:550
134491560,14ptp4l29388-21apt-get23:45:142
134491560,12ptp4l0-21swapper/200:11:542
3081199552,22cyclictest0-21swapper/019:38:060
3081199552,21cyclictest0-21swapper/022:08:140
3081199552,20cyclictest0-21swapper/000:24:580
3081199550,26cyclictest8281-21seq22:59:160
3081199550,26cyclictest3471-21seq21:38:350
3081199550,25cyclictest3402-21seq20:29:360
3081199550,25cyclictest26403-21seq20:07:580
3081199550,25cyclictest12666-21seq21:58:260
134491550,2ptp4l0-21swapper/120:35:171
3081199543,21cyclictest0-21swapper/020:31:240
3081199542,22cyclictest0-21swapper/019:45:560
134491540,4ptp4l0-21swapper/222:51:062
134491540,4ptp4l0-21swapper/123:10:291
134491540,3ptp4l0-21swapper/219:24:092
134491540,3ptp4l0-21swapper/219:24:092
134491540,3ptp4l0-21swapper/123:46:011
134491540,3ptp4l0-21swapper/123:05:211
134491540,3ptp4l0-21swapper/121:32:231
3081199533,21cyclictest0-21swapper/023:37:340
3081199532,21cyclictest0-21swapper/021:09:050
3081199532,20cyclictest0-21swapper/022:47:240
3081199532,20cyclictest0-21swapper/019:44:080
3081199530,18cyclictest32307-21threads19:10:550
292162530,4sleep00-21swapper/021:25:000
134491530,5ptp4l0-21swapper/219:37:572
134491530,4ptp4l0-21swapper/123:53:561
134491530,4ptp4l0-21swapper/122:55:031
134491530,3ptp4l0-21swapper/119:54:511
134491530,3ptp4l0-21swapper/100:18:321
3081199522,20cyclictest0-21swapper/023:24:240
134491520,4ptp4l0-21swapper/122:40:491
134491520,4ptp4l0-21swapper/119:16:151
118902520,4sleep00-21swapper/023:05:210
134491510,4ptp4l0-21swapper/122:39:461
134491510,3ptp4l0-21swapper/121:49:041
134491500,5ptp4l0-21swapper/119:09:441
134491500,3ptp4l0-21swapper/323:45:163
134491500,3ptp4l0-21swapper/123:56:251
134491500,3ptp4l0-21swapper/123:34:551
134491500,3ptp4l0-21swapper/120:09:131
134491500,3ptp4l0-21swapper/022:50:280
3081199492,20cyclictest0-21swapper/020:56:290
134491490,4ptp4l0-21swapper/323:18:413
134491490,4ptp4l0-21swapper/121:05:491
134491490,4ptp4l0-21swapper/120:49:481
134491490,3ptp4l0-21swapper/321:52:493
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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