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2026-06-21 - 18:13
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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 Sun Jun 21, 2026 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2206021570,3sleep33042899cyclictest12:35:273
99421420,4sleep13042699cyclictest11:50:281
3042799722,68cyclictest0-21swapper/208:50:282
3042799722,68cyclictest0-21swapper/208:50:282
3042899680,24cyclictest5075-21cpu07:25:123
111612620,7sleep03042599cyclictest07:35:270
134491610,5ptp4l0-21swapper/012:15:110
134491600,18ptp4l0-21swapper/109:05:181
30428995912,45cyclictest0-21swapper/309:49:483
3042899590,4cyclictest5637-21unixbench_multi12:00:273
298362590,7sleep33042899cyclictest10:35:153
134491590,4ptp4l0-21swapper/309:30:263
134491590,4ptp4l0-21swapper/011:35:180
33952580,6sleep23042799cyclictest11:55:262
3042899580,31cyclictest20137-21seq12:34:563
134491580,4ptp4l0-21swapper/210:05:592
3042899570,32cyclictest22014-21taskset10:15:493
134491570,6ptp4l0-21swapper/012:05:290
134491570,4ptp4l0-21swapper/012:02:540
134491570,3ptp4l10414-21/usr/sbin/munin08:45:212
134491570,3ptp4l0-21swapper/211:30:002
3042899562,29cyclictest0-21swapper/310:29:243
30428995611,43cyclictest0-21swapper/310:33:093
134491560,5ptp4l0-21swapper/108:35:161
3042899554,14cyclictest134491ptp4l07:20:223
3042899550,4cyclictest14593-21cpuspeed_turbos07:45:123
134491550,9ptp4l0-21swapper/010:33:000
134491550,4ptp4l0-21swapper/010:08:090
134491550,4ptp4l0-21swapper/008:30:190
134491550,4ptp4l0-21swapper/008:16:210
134491550,4ptp4l0-21swapper/007:16:050
3042899548,44cyclictest0-21swapper/308:49:293
134491540,4ptp4l0-21swapper/211:44:322
134491540,4ptp4l0-21swapper/008:59:590
134491540,4ptp4l0-21swapper/007:42:260
134491540,3ptp4l0-21swapper/210:15:192
134491530,4ptp4l0-21swapper/008:49:030
134491530,3ptp4l0-21swapper/110:17:521
134491520,4ptp4l0-21swapper/010:45:510
134491520,4ptp4l0-21swapper/010:04:090
134491520,4ptp4l0-21swapper/007:57:230
134491520,3ptp4l0-21swapper/310:45:213
134491520,3ptp4l0-21swapper/212:18:142
134491520,3ptp4l0-21swapper/011:20:380
3042899511,29cyclictest19730-21seq11:21:303
3042899510,30cyclictest2411-21taskset07:19:293
134491510,7ptp4l33-21ksoftirqd/207:25:262
134491510,4ptp4l0-21swapper/010:12:580
134491510,3ptp4l0-21swapper/207:14:042
134491510,3ptp4l0-21swapper/010:26:590
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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