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2026-09-13 - 07:18
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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 Sun Sep 13, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
398347999601293,3cyclictest0-21swapper/200:18:358
39834939950617,488cyclictest0-21swapper/623:23:2512
398350999503473,30cyclictest0-21swapper/1023:32:252
398350999496494,2cyclictest4100691-21kworker/10:1+i915-unordered21:28:252
3983527994954,490cyclictest0-21swapper/1400:26:256
398352199492491,1cyclictest4012258-21kworker/12:0+i915-unordered20:03:254
39834749949123,58cyclictest0-21swapper/100:25:251
39835319949022,30cyclictest0-21swapper/1521:48:257
398349399489458,31cyclictest0-21swapper/621:53:2512
398347999489487,2cyclictest4193192-21kworker/2:1+i915-unordered23:32:258
39834799948720,59cyclictest0-21swapper/220:57:258
398347999474474,0cyclictest0-21swapper/222:35:258
398347999473472,1cyclictest4072462-21kworker/2:0+i915-unordered20:53:258
39835279947026,30cyclictest0-21swapper/1422:03:256
398352399470468,2cyclictest0-21swapper/1323:32:255
39834709947024,28cyclictest0-21swapper/020:56:080
398349399466466,0cyclictest0-21swapper/619:35:2512
39834849946626,439cyclictest0-21swapper/420:20:2510
39834709946419,30cyclictest0-21swapper/022:45:090
398352799463462,1cyclictest4160889-21kworker/14:0+i915-unordered23:23:256
39834849946214,30cyclictest0-21swapper/423:31:1010
398349399460459,1cyclictest0-21swapper/619:40:2512
39835279945814,29cyclictest0-21swapper/1419:32:256
398350999458457,1cyclictest0-21swapper/1020:53:252
3983481994543,29cyclictest0-21swapper/319:38:109
3983481994534,29cyclictest0-21swapper/320:58:489
39835219945211,29cyclictest0-21swapper/1219:53:254
3983489994521,3cyclictest0-21swapper/522:25:2011
3983481994513,29cyclictest0-21swapper/300:21:069
39834709945126,30cyclictest0-21swapper/019:12:080
3983521994505,30cyclictest0-21swapper/1222:27:254
3983470994505,30cyclictest0-21swapper/020:34:080
398350399449447,2cyclictest4161167-21kworker/9:1+pm22:59:3615
3983481994490,30cyclictest0-21swapper/323:04:079
398347999449448,1cyclictest0-21swapper/221:28:258
3983470994492,30cyclictest0-21swapper/022:30:460
398352799448446,2cyclictest3996066-21kworker/14:0+i915-unordered19:40:256
398352399448447,1cyclictest0-21swapper/1300:26:255
398352199448447,1cyclictest1818-21snmpd23:08:574
3983481994483,29cyclictest0-21swapper/322:01:109
3983481994470,30cyclictest0-21swapper/321:00:469
3983481994470,30cyclictest0-21swapper/321:00:469
398352799446445,1cyclictest4119524-21kworker/14:2+i915-unordered21:53:256
39835039944524,420cyclictest0-21swapper/919:52:1015
39834849944523,418cyclictest0-21swapper/421:10:1110
39834819944526,417cyclictest0-21swapper/323:05:079
398352799444443,1cyclictest0-21swapper/1419:27:366
39835039944424,419cyclictest0-21swapper/923:04:4615
398348999443443,0cyclictest69750irq/159-i91522:33:2511
3983481994430,442cyclictest3994925-21nodev-device-ev19:14:469
39835169944222,419cyclictest0-21swapper/1120:09:203
39834939944223,418cyclictest0-21swapper/600:19:2012
398348999442442,0cyclictest69750irq/159-i91519:16:2511
39834749944220,421cyclictest0-21swapper/123:54:471
39834749944220,421cyclictest0-21swapper/123:54:471
398350399441441,0cyclictest0-21swapper/923:38:2515
39835039944121,419cyclictest0-21swapper/923:40:4815
39834749944120,420cyclictest0-21swapper/121:04:461
39834749944120,420cyclictest0-21swapper/121:04:461
398352799440435,4cyclictest1818-21snmpd20:26:206
3983527994400,30cyclictest0-21swapper/1400:33:256
39835039944019,420cyclictest0-21swapper/920:44:1015
39834709944022,417cyclictest0-21swapper/022:35:110
39834709944022,417cyclictest0-21swapper/019:55:080
398352399439438,1cyclictest4141791-21kworker/13:0+pm22:25:205
398348999439438,1cyclictest69750irq/159-i91521:45:2511
39834749943916,422cyclictest0-21swapper/119:24:471
39834799943823,415cyclictest0-21swapper/200:24:208
39835219943723,414cyclictest0-21swapper/1221:20:254
39835219943721,416cyclictest0-21swapper/1221:15:254
398351699437434,2cyclictest4040353-21kworker/u64:3+events_unbound20:51:253
398348999437436,1cyclictest69750irq/159-i91519:23:2511
39834709943719,417cyclictest0-21swapper/021:32:460
3983523994360,24cyclictest0-21swapper/1319:41:255
39835009943624,411cyclictest0-21swapper/819:31:1014
39835009943623,412cyclictest0-21swapper/820:45:0914
39835009943622,413cyclictest0-21swapper/820:17:4714
398348999436435,1cyclictest69750irq/159-i91522:57:2511
39834819943615,420cyclictest0-21swapper/321:21:469
39835319943521,413cyclictest0-21swapper/1519:52:257
39835239943521,413cyclictest0-21swapper/1320:26:255
398351699435433,2cyclictest3945820-21kworker/11:6+i915-unordered19:23:253
39835009943520,414cyclictest0-21swapper/819:43:1114
398348999435434,1cyclictest69750irq/159-i91521:50:2511
39834849943524,411cyclictest0-21swapper/420:16:2510
39834749943513,421cyclictest0-21swapper/120:59:481
39834749943513,421cyclictest0-21swapper/120:59:481
39835279943413,30cyclictest0-21swapper/1422:22:256
39835239943421,412cyclictest0-21swapper/1323:46:255
39835239943421,412cyclictest0-21swapper/1323:46:255
39834709943415,418cyclictest0-21swapper/019:46:250
39835239943322,410cyclictest0-21swapper/1321:37:255
39835039943313,419cyclictest0-21swapper/919:42:1015
398347499433432,1cyclictest4165902-21kworker/1:2+i915-unordered22:49:461
39835319943219,412cyclictest0-21swapper/1500:10:257
39835239943222,409cyclictest0-21swapper/1321:46:255
39835239943217,414cyclictest0-21swapper/1319:36:255
39835169943219,412cyclictest0-21swapper/1123:18:253
39835039943212,419cyclictest0-21swapper/923:10:4615
39835039943212,419cyclictest0-21swapper/920:36:0915
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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