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2026-09-18 - 04:06
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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 100 highest latencies:
System rack0slot5.osadl.org (updated Fri Sep 18, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
384352599736314,419cyclictest0-21swapper/1119:45:373
3843497995520,30cyclictest0-21swapper/422:10:1510
38434829952838,27cyclictest0-21swapper/022:10:150
38435299951323,489cyclictest0-21swapper/1220:51:164
384348699496494,2cyclictest4081395-21kworker/1:0+i915-unordered00:05:151
384352999488482,4cyclictest3989080-21kworker/12:2+i915-unordered22:10:154
384349399485484,1cyclictest0-21swapper/300:23:159
384352599484483,1cyclictest4085310-21kworker/11:1+i915-unordered00:23:153
384354099478476,2cyclictest3835017-21kworker/15:3+i915-unordered19:46:167
384350899475474,1cyclictest4085476-21kworker/7:2+i915-unordered00:08:1513
38435409946824,30cyclictest0-21swapper/1519:53:167
38435299946521,30cyclictest0-21swapper/1221:21:154
384350899465464,1cyclictest0-21swapper/719:46:1613
38435409946222,30cyclictest0-21swapper/1520:10:167
384351299462461,1cyclictest69750irq/159-i91500:23:1514
38435259945919,30cyclictest0-21swapper/1120:52:153
38435259945916,28cyclictest0-21swapper/1121:53:153
38435209945918,30cyclictest0-21swapper/1021:19:112
38434869945918,30cyclictest0-21swapper/121:15:151
384354099458454,4cyclictest1818-21snmpd22:46:137
38435159945833,424cyclictest0-21swapper/922:14:1115
3843497994560,20cyclictest0-21swapper/421:38:3810
3843540994510,3cyclictest0-21swapper/1521:06:377
3843540994510,3cyclictest0-21swapper/1521:06:377
3843525994519,30cyclictest0-21swapper/1120:31:153
3843525994517,30cyclictest0-21swapper/1123:21:153
3843497994510,30cyclictest0-21swapper/420:23:3910
38435159944625,420cyclictest0-21swapper/923:59:0015
38435159944625,420cyclictest0-21swapper/923:36:3615
38434919944625,419cyclictest0-21swapper/220:57:378
38434919944625,419cyclictest0-21swapper/220:57:378
38435159944525,419cyclictest0-21swapper/922:14:5715
38435159944525,419cyclictest0-21swapper/920:48:3715
38435159944524,420cyclictest0-21swapper/920:07:0015
38435159944524,420cyclictest0-21swapper/900:13:5815
38435159944424,419cyclictest0-21swapper/923:46:0115
38435159944424,419cyclictest0-21swapper/923:46:0115
38435159944424,419cyclictest0-21swapper/923:03:5915
38435159944424,419cyclictest0-21swapper/920:18:0115
38435159944423,420cyclictest0-21swapper/923:05:5915
38435159944422,421cyclictest0-21swapper/900:27:5815
38435159944422,421cyclictest0-21swapper/900:21:5715
384351599442442,0cyclictest0-21swapper/900:05:1515
38434919944121,419cyclictest0-21swapper/220:31:378
384348299441439,2cyclictest0-21swapper/019:40:130
38435209944026,414cyclictest0-21swapper/1019:38:162
38434919944019,420cyclictest0-21swapper/223:22:388
38434919944019,420cyclictest0-21swapper/222:54:598
38434919944019,420cyclictest0-21swapper/221:17:008
38434829944022,417cyclictest0-21swapper/022:20:370
38435159943919,418cyclictest0-21swapper/900:01:0015
38435159943916,419cyclictest0-21swapper/921:23:3715
384350199439438,1cyclictest0-21swapper/523:38:4711
38434979943916,420cyclictest0-21swapper/420:15:0110
38434939943925,414cyclictest0-21swapper/321:12:159
38434919943919,419cyclictest0-21swapper/200:30:368
38434919943919,419cyclictest0-21swapper/200:04:028
38434919943917,421cyclictest0-21swapper/219:42:398
38435159943816,421cyclictest0-21swapper/923:25:3715
384349799438438,0cyclictest0-21swapper/422:44:2810
38434979943817,419cyclictest0-21swapper/422:24:0010
38434979943816,419cyclictest0-21swapper/420:39:3710
38434939943822,415cyclictest0-21swapper/321:18:159
384348299438437,1cyclictest0-21swapper/000:23:150
38434919943717,420cyclictest0-21swapper/223:03:008
38435259943622,414cyclictest0-21swapper/1120:56:153
38435259943622,414cyclictest0-21swapper/1120:56:153
384351599436435,1cyclictest0-21swapper/922:44:2815
38435159943617,417cyclictest0-21swapper/900:18:0015
38435159943616,418cyclictest0-21swapper/922:09:0115
38435129943618,417cyclictest0-21swapper/820:32:3814
38434979943617,418cyclictest0-21swapper/421:42:5810
38434979943614,419cyclictest0-21swapper/421:08:0010
38434979943614,419cyclictest0-21swapper/421:08:0010
384349399436432,3cyclictest1818-21snmpd20:41:279
38434829943622,414cyclictest0-21swapper/023:34:390
38435159943515,420cyclictest0-21swapper/919:33:3815
38435159943515,419cyclictest0-21swapper/922:04:1115
38435159943515,418cyclictest0-21swapper/923:13:3815
38435129943519,415cyclictest0-21swapper/821:12:5914
38434979943513,420cyclictest0-21swapper/420:55:3710
38434979943513,420cyclictest0-21swapper/420:55:3710
38434979943513,419cyclictest0-21swapper/422:51:3810
38434919943516,417cyclictest0-21swapper/222:12:018
38435259943420,414cyclictest0-21swapper/1100:18:153
38434979943316,416cyclictest0-21swapper/419:18:3610
38434979943310,421cyclictest0-21swapper/421:47:0010
38434919943311,421cyclictest0-21swapper/200:22:388
38435259943220,411cyclictest0-21swapper/1120:26:153
38435209943217,30cyclictest0-21swapper/1019:05:162
384351299432431,1cyclictest69750irq/159-i91521:01:1614
384351299432431,1cyclictest69750irq/159-i91521:01:1614
38434919943212,419cyclictest0-21swapper/220:02:398
38435209943118,412cyclictest0-21swapper/1022:30:152
38434979943111,0cyclictest0-21swapper/400:15:3810
38434919943011,417cyclictest0-21swapper/222:22:388
38434919943010,418cyclictest0-21swapper/223:49:578
38435159942910,418cyclictest0-21swapper/922:56:0015
3843497994297,419cyclictest0-21swapper/422:26:3610
3843497994297,419cyclictest0-21swapper/421:32:5810
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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