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2026-08-19 - 17:21
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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 Wed Aug 19, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22422199955518,536cyclictest0-21swapper/1521:01:137
22422079954826,521cyclictest0-21swapper/1220:19:134
22421789954724,522cyclictest0-21swapper/523:17:1211
2242202995250,521cyclictest0-21swapper/1120:14:133
22421789952224,26cyclictest0-21swapper/522:27:1211
224216899518517,1cyclictest2254932-21kworker/2:0+i915-unordered19:22:138
224216899518517,1cyclictest2254932-21kworker/2:0+i915-unordered19:22:138
224218599517516,1cyclictest2331255-21kworker/7:0+i915-unordered21:01:1313
224218999516428,59cyclictest0-21swapper/823:35:3614
224221999511510,1cyclictest2140585-21kworker/15:3+i915-unordered19:08:137
224216899507506,1cyclictest0-21swapper/222:27:128
224217099489488,1cyclictest2250756-21kworker/3:4+i915-unordered20:14:139
22421899948518,29cyclictest2270917-21kworker/8:1-events19:50:3314
224217899485483,2cyclictest0-21swapper/521:14:1311
224217099485427,29cyclictest0-21swapper/323:07:129
2242159994856,479cyclictest0-21swapper/022:43:120
224218599477477,0cyclictest0-21swapper/722:37:1213
22421979947324,30cyclictest0-21swapper/1023:55:552
224218599473472,1cyclictest0-21swapper/719:08:1313
22421979947222,29cyclictest0-21swapper/1020:50:582
224221199466466,0cyclictest0-21swapper/1320:13:135
22421689946517,29cyclictest0-21swapper/223:27:558
22421899946321,29cyclictest0-21swapper/819:17:5914
224218299462461,1cyclictest2415886-21kworker/6:2+i915-unordered22:43:1212
224221199461460,1cyclictest2443833-21kworker/13:1+i915-unordered23:17:125
224217099461460,1cyclictest0-21swapper/320:39:139
22421749946039,421cyclictest0-21swapper/419:24:3510
22421749946039,421cyclictest0-21swapper/419:24:3510
224219799458458,0cyclictest0-21swapper/1019:37:132
22421979945811,29cyclictest2488390-21sleep00:15:072
2242178994587,30cyclictest0-21swapper/523:11:3511
22421899945717,29cyclictest0-21swapper/822:10:5814
22421899945717,29cyclictest0-21swapper/822:10:5814
22421899945713,30cyclictest0-21swapper/819:27:5714
22421899945713,30cyclictest0-21swapper/819:27:5714
2242174994577,30cyclictest0-21swapper/419:38:5810
2242219994566,29cyclictest0-21swapper/1521:52:347
224218999456455,1cyclictest69750irq/159-i91522:43:1214
224218299456453,3cyclictest1818-21snmpd22:25:4512
224221599454453,1cyclictest0-21swapper/1422:43:126
2242215994520,451cyclictest0-21swapper/1420:42:076
224219799452452,0cyclictest2403625-21kworker/10:0+i915-unordered23:06:122
2242219994500,29cyclictest0-21swapper/1523:26:337
2242219994490,446cyclictest0-21swapper/1522:09:347
2242219994490,446cyclictest0-21swapper/1522:09:347
2242202994490,30cyclictest0-21swapper/1122:05:343
2242202994490,30cyclictest0-21swapper/1122:05:343
224218999448446,2cyclictest1818-21snmpd21:36:2314
2242185994471,29cyclictest0-21swapper/723:24:1213
224221599446445,1cyclictest0-21swapper/1422:25:456
22422029944625,420cyclictest0-21swapper/1122:26:583
2242163994460,445cyclictest0-21swapper/121:36:341
2242159994462,443cyclictest0-21swapper/000:00:340
22422159944523,421cyclictest0-21swapper/1423:47:336
22421789944523,421cyclictest0-21swapper/500:02:3311
22421749944523,420cyclictest0-21swapper/420:27:3410
2242163994450,444cyclictest0-21swapper/121:17:551
2242163994450,444cyclictest0-21swapper/120:23:351
22422029944423,417cyclictest0-21swapper/1123:45:343
22421859944418,415cyclictest2423896-21sshd-session22:48:5813
22421789944425,418cyclictest0-21swapper/523:40:3511
22421689944423,420cyclictest0-21swapper/221:20:368
2242163994440,443cyclictest0-21swapper/123:07:581
2242163994440,443cyclictest0-21swapper/119:30:561
2242163994440,443cyclictest0-21swapper/119:30:561
224215999444443,1cyclictest0-21swapper/021:34:130
22422159944323,418cyclictest0-21swapper/1422:04:546
22422159944323,418cyclictest0-21swapper/1422:04:546
224221199443442,1cyclictest2484132-21kworker/13:2+i915-unordered00:09:125
22422029944322,418cyclictest0-21swapper/1121:15:363
22422029944321,419cyclictest0-21swapper/1122:21:583
22422029944220,420cyclictest0-21swapper/1120:16:343
22421789944220,421cyclictest0-21swapper/500:06:3411
22421689944224,418cyclictest0-21swapper/223:37:128
224215999442442,0cyclictest0-21swapper/019:37:130
22422029944122,417cyclictest0-21swapper/1123:32:353
22421789944122,418cyclictest0-21swapper/519:27:3511
22421789944122,418cyclictest0-21swapper/519:27:3511
22421789944121,419cyclictest0-21swapper/520:07:3411
22421689944123,417cyclictest0-21swapper/200:27:588
22421689944121,419cyclictest0-21swapper/221:31:368
2242215994400,439cyclictest0-21swapper/1421:26:136
22422029944021,417cyclictest0-21swapper/1122:35:583
22422029944020,419cyclictest0-21swapper/1122:33:573
22422029944019,420cyclictest0-21swapper/1121:40:593
22422029944019,420cyclictest0-21swapper/1119:48:583
22422029944017,422cyclictest0-21swapper/1100:06:563
224219799440437,2cyclictest2352351-21kworker/10:0+pm21:44:082
22421789944020,419cyclictest0-21swapper/521:16:3411
22421789944020,419cyclictest0-21swapper/520:29:5711
22421789944018,421cyclictest0-21swapper/520:13:5611
22421689944021,419cyclictest0-21swapper/220:45:368
22421689944021,418cyclictest0-21swapper/223:50:348
22421789943917,421cyclictest0-21swapper/520:39:5711
224217499439437,2cyclictest2303133-21kworker/4:0+i915-unordered20:19:1310
22421689943921,417cyclictest0-21swapper/200:20:578
224221199438438,0cyclictest2403747-21kworker/13:2+i915-unordered22:27:125
22422029943816,421cyclictest0-21swapper/1123:50:553
22422029943816,420cyclictest0-21swapper/1121:31:573
22421789943817,420cyclictest0-21swapper/522:30:5411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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