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2026-06-15 - 07:59
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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 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
134491530,4ptp4l0-21swapper/123:11:521
134491530,4ptp4l0-21swapper/121:29:521
134491530,4ptp4l0-21swapper/120:50:481
134491530,3ptp4l0-21swapper/023:12:250
134491530,3ptp4l0-21swapper/021:58:540
134491520,4ptp4l0-21swapper/119:23:081
134491520,3ptp4l0-21swapper/319:27:293
134491520,3ptp4l0-21swapper/122:39:511
134491520,11ptp4l32741-21/usr/sbin/munin19:05:180
174099513,4cyclictest41-21ksoftirqd/323:10:003
134491510,4ptp4l0-21swapper/221:19:142
134491510,4ptp4l0-21swapper/221:05:332
134491510,4ptp4l0-21swapper/220:28:462
134491510,4ptp4l0-21swapper/220:03:242
134491510,4ptp4l0-21swapper/121:39:011
134491510,4ptp4l0-21swapper/119:31:001
134491510,3ptp4l0-21swapper/220:08:502
134491510,3ptp4l0-21swapper/120:45:211
134491500,4ptp4l0-21swapper/222:31:352
134491500,4ptp4l0-21swapper/123:52:001
134491500,4ptp4l0-21swapper/100:01:211
134491500,3ptp4l0-21swapper/119:44:361
134491500,3ptp4l0-21swapper/100:10:231
134491500,3ptp4l0-21swapper/023:07:120
1737994927,20cyclictest9-21ksoftirqd/021:00:110
134491490,8ptp4l0-21swapper/223:12:072
1739994842,4cyclictest21132-21dump-pmu-power23:20:012
134491470,4ptp4l33-21ksoftirqd/200:15:162
134491470,4ptp4l0-21swapper/119:49:061
134491470,3ptp4l0-21swapper/122:52:461
134491470,3ptp4l0-21swapper/122:26:221
134491460,4ptp4l0-21swapper/000:14:180
134491460,3ptp4l0-21swapper/320:18:073
134491460,3ptp4l0-21swapper/121:20:421
134491460,3ptp4l0-21swapper/119:11:001
134491460,3ptp4l0-21swapper/100:28:511
134491460,2ptp4l0-21swapper/120:37:111
134491460,11ptp4l0-21swapper/222:37:282
174099450,2cyclictest121rcu_preempt19:40:213
174099450,2cyclictest121rcu_preempt00:05:293
134491450,9ptp4l0-21swapper/222:21:282
134491450,4ptp4l173899cyclictest20:01:311
134491450,4ptp4l0-21swapper/119:39:071
134491450,3ptp4l0-21swapper/223:20:142
134491450,3ptp4l0-21swapper/123:39:261
134491450,3ptp4l0-21swapper/122:40:071
134491450,3ptp4l0-21swapper/122:21:461
134491450,3ptp4l0-21swapper/019:40:550
1740994433,9cyclictest41-21ksoftirqd/319:30:253
1737994422,19cyclictest9-21ksoftirqd/023:25:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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