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2025-11-24 - 14:51
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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 Mon Nov 24, 2025 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18987529954024,515cyclictest0-21swapper/1421:26:436
189874299539538,1cyclictest2048273-21kworker/11:2+i915-unordered22:21:433
18987429953433,500cyclictest0-21swapper/1119:18:433
189872499529528,1cyclictest2027515-21kworker/7:0+i915-unordered21:52:4313
189870599521432,59cyclictest0-21swapper/223:45:438
18987529951929,489cyclictest0-21swapper/1423:58:436
18987529951818,500cyclictest0-21swapper/1420:50:436
18987529951818,500cyclictest0-21swapper/1420:50:436
189874299512511,1cyclictest1920186-21kworker/11:1+i915-unordered19:36:433
18987059949210,0cyclictest0-21swapper/219:53:438
18987169948613,58cyclictest0-21swapper/523:52:4311
189871999473471,2cyclictest2010104-21kworker/6:0+i915-unordered21:26:4312
18987169946925,29cyclictest0-21swapper/522:46:4311
18987169946824,29cyclictest0-21swapper/523:30:4311
18987169946824,29cyclictest0-21swapper/523:30:4311
189875299461461,0cyclictest0-21swapper/1420:57:436
189875299461461,0cyclictest0-21swapper/1420:57:436
189874599460455,4cyclictest3682525-21snmpd00:32:374
18987349946019,440cyclictest0-21swapper/1020:24:272
189873499452450,2cyclictest1969197-21kworker/10:2+i915-unordered20:32:432
189872999452451,1cyclictest77250irq/159-i91521:07:4315
189871999452451,1cyclictest1961129-21kworker/6:0+i915-unordered20:50:4312
189871999452451,1cyclictest1961129-21kworker/6:0+i915-unordered20:50:4312
1898724994519,29cyclictest0-21swapper/723:53:4313
189871999451451,0cyclictest2141813-21kworker/6:1+i915-unordered23:58:4312
1898711994492,446cyclictest0-21swapper/423:28:4310
18987169944622,28cyclictest0-21swapper/521:57:4311
18987089944626,419cyclictest0-21swapper/321:54:069
189870099446445,1cyclictest0-21swapper/122:21:431
18987169944522,422cyclictest0-21swapper/522:39:0511
18987579944424,419cyclictest0-21swapper/1523:05:067
18987169944424,417cyclictest0-21swapper/523:27:2811
18987579944324,418cyclictest2071906-21taskset22:30:277
18987169944223,419cyclictest0-21swapper/521:27:2811
18987089944224,418cyclictest0-21swapper/322:48:279
18987089944223,419cyclictest0-21swapper/321:10:299
18987579944122,418cyclictest0-21swapper/1521:53:057
18987579944119,421cyclictest0-21swapper/1521:48:067
18987089944022,418cyclictest0-21swapper/321:31:269
189869699440436,4cyclictest3682525-21snmpd23:44:180
189869699440436,4cyclictest3682525-21snmpd23:44:180
18987089943817,419cyclictest0-21swapper/300:16:269
18987579943715,421cyclictest0-21swapper/1522:59:057
189872999437437,0cyclictest77250irq/159-i91520:55:4315
189872999437437,0cyclictest77250irq/159-i91520:55:4315
18987169943711,425cyclictest0-21swapper/523:05:4311
18987059943724,413cyclictest0-21swapper/200:32:438
1898700994366,429cyclictest2149927-21kworker/1:1+i915-unordered00:06:431
1898700994360,436cyclictest0-21swapper/119:35:431
18987059943519,416cyclictest0-21swapper/221:55:068
18987059943518,417cyclictest0-21swapper/200:17:438
189869699435434,1cyclictest0-21swapper/023:15:430
18987529943414,420cyclictest0-21swapper/1422:35:066
18987089943413,421cyclictest0-21swapper/323:51:289
18987089943412,419cyclictest0-21swapper/323:44:069
18987089943412,419cyclictest0-21swapper/323:44:069
18987059943415,418cyclictest0-21swapper/223:55:068
18987059943414,419cyclictest0-21swapper/221:32:058
1898757994338,424cyclictest0-21swapper/1519:07:437
18987579943313,419cyclictest0-21swapper/1522:04:057
18987299943311,419cyclictest0-21swapper/900:05:0615
18987249943323,410cyclictest0-21swapper/722:45:4313
189871999433433,0cyclictest0-21swapper/621:22:4312
18987119943318,415cyclictest0-21swapper/423:06:4310
18987579943210,421cyclictest0-21swapper/1522:54:277
18987579943210,421cyclictest0-21swapper/1522:26:277
1898752994327,29cyclictest0-21swapper/1422:41:436
18987299943211,421cyclictest0-21swapper/922:50:0615
18987089943212,418cyclictest0-21swapper/323:45:269
189870599432432,0cyclictest0-21swapper/200:26:278
18987579943110,420cyclictest0-21swapper/1522:06:277
18987579943110,420cyclictest0-21swapper/1500:13:067
18987529943111,419cyclictest0-21swapper/1422:15:066
189872999431429,2cyclictest0-21swapper/900:33:4315
18987299943111,420cyclictest0-21swapper/921:45:0615
18987299943111,419cyclictest0-21swapper/923:39:0615
18987299943111,419cyclictest0-21swapper/923:39:0615
1898724994319,421cyclictest0-21swapper/723:25:0613
189870899431428,2cyclictest0-21swapper/321:40:399
189870099431430,1cyclictest0-21swapper/121:26:431
1898724994308,30cyclictest0-21swapper/720:48:4313
1898724994308,30cyclictest0-21swapper/720:48:4313
18987169943010,417cyclictest0-21swapper/523:40:0611
18987169943010,417cyclictest0-21swapper/523:40:0611
18987059943012,418cyclictest0-21swapper/200:20:288
18987059943012,417cyclictest0-21swapper/223:54:278
1898729994298,419cyclictest0-21swapper/923:10:0615
18987119942913,416cyclictest0-21swapper/421:33:4310
189869699429428,1cyclictest0-21swapper/023:07:430
1898729994287,420cyclictest0-21swapper/900:13:2915
1898729994287,418cyclictest0-21swapper/920:15:0615
1898729994285,422cyclictest0-21swapper/921:03:2815
1898705994288,419cyclictest0-21swapper/223:07:288
1898696994289,419cyclictest0-21swapper/023:26:270
189875299427425,1cyclictest2006303-21kworker/14:1+pm21:17:566
18987529942712,414cyclictest0-21swapper/1421:10:076
189872699427426,1cyclictest0-21swapper/823:44:1814
189872699427426,1cyclictest0-21swapper/823:44:1814
189872699427425,2cyclictest2105725-21kworker/u64:1+events_unbound23:15:4314
1898716994277,417cyclictest0-21swapper/523:16:0611
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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