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2026-07-19 - 05:23
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackcslot8.osadl.org (updated Sun Jul 19, 2026 00:49:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
220219927476,0cyclictest151rcu_preempt22:54:2128
220759923521,146cyclictest0-21swapper/1400:20:006
220789917620,133cyclictest0-21swapper/1522:45:237
220789917320,107cyclictest0-21swapper/1523:45:177
220789917319,111cyclictest0-21swapper/1500:34:597
220789916919,111cyclictest0-21swapper/1500:20:027
3273911640,156ptp4l0-21swapper/119:07:351
22112991634,1cyclictest151rcu_preempt21:30:3413
189492163155,6sleep20-21swapper/219:05:1912
22026991597,116cyclictest0-21swapper/721:53:2729
22026991596,152cyclictest0-21swapper/720:45:0129
220789914620,97cyclictest0-21swapper/1523:35:247
22160991441,83cyclictest0-21swapper/2723:13:0920
22026991446,121cyclictest0-21swapper/720:40:1329
219899914332,92cyclictest0-21swapper/121:29:491
219899914331,90cyclictest0-21swapper/123:15:391
219899914331,89cyclictest0-21swapper/123:01:451
220789914220,77cyclictest0-21swapper/1521:37:017
22026991416,84cyclictest0-21swapper/721:24:3529
22160991400,83cyclictest0-21swapper/2722:55:3120
221069913944,55cyclictest0-21swapper/1921:40:1711
22078991390,87cyclictest0-21swapper/1522:39:007
22160991380,82cyclictest0-21swapper/2720:40:1820
22160991380,82cyclictest0-21swapper/2720:40:1720
22160991380,81cyclictest0-21swapper/2719:40:4320
21989991380,87cyclictest0-21swapper/122:41:271
22160991370,81cyclictest0-21swapper/2721:00:2020
22160991370,81cyclictest0-21swapper/2721:00:1920
22160991370,80cyclictest0-21swapper/2719:27:5220
221069913723,70cyclictest0-21swapper/1920:55:2311
221069913723,70cyclictest0-21swapper/1920:55:2211
220789913719,70cyclictest0-21swapper/1500:39:487
220789913717,95cyclictest0-21swapper/1500:28:347
22160991360,80cyclictest0-21swapper/2722:25:1920
221439913646,89cyclictest0-21swapper/2522:42:2218
221439913646,76cyclictest0-21swapper/2521:53:4418
221069913633,60cyclictest0-21swapper/1900:27:4911
221609913571,49cyclictest0-21swapper/2720:40:0120
221609913571,49cyclictest0-21swapper/2720:40:0120
221439913546,46cyclictest0-21swapper/2500:26:0418
221439913544,83cyclictest0-21swapper/2523:34:1418
219899913548,60cyclictest0-21swapper/120:36:231
219899913548,60cyclictest0-21swapper/120:36:231
219899913542,60cyclictest0-21swapper/100:02:401
22160991340,78cyclictest0-21swapper/2723:57:4420
22143991340,83cyclictest0-21swapper/2522:03:5418
22026991347,76cyclictest0-21swapper/723:26:3629
221069913347,52cyclictest0-21swapper/1922:41:1211
221069913332,66cyclictest0-21swapper/1900:30:1411
220789913316,96cyclictest0-21swapper/1500:22:407
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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