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2026-03-24 - 04:12
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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 Tue Mar 24, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
39435219953522,512cyclictest0-21swapper/1200:18:484
39435349952827,500cyclictest0-21swapper/1521:52:487
394352699503502,1cyclictest0-21swapper/1321:51:485
394352199495495,0cyclictest3968350-21kworker/12:2+i915-unordered19:43:484
394352699492460,32cyclictest0-21swapper/1323:12:485
39434789948434,449cyclictest0-21swapper/122:36:481
394350199472471,1cyclictest3942884-21kworker/7:1+i915-unordered21:52:4813
3943493994627,58cyclictest0-21swapper/519:15:1011
3943521994566,59cyclictest0-21swapper/1219:13:484
39434939945528,29cyclictest0-21swapper/523:06:1111
39434939945528,29cyclictest0-21swapper/523:06:1111
394348999451450,1cyclictest4004389-21kworker/4:2+i915-unordered21:42:4810
39434899945125,28cyclictest4091997-21ntpq22:10:1010
39435199944921,29cyclictest0-21swapper/1122:38:093
39435349944625,420cyclictest0-21swapper/1519:55:107
394348999445444,1cyclictest4004389-21kworker/4:2+i915-unordered21:36:4810
39435199944417,29cyclictest0-21swapper/1119:59:093
39435199944415,30cyclictest0-21swapper/1123:38:093
394348699443439,3cyclictest4053622-21kworker/3:1+i915-unordered21:25:109
39435269944248,393cyclictest0-21swapper/1319:48:485
39434939944212,30cyclictest0-21swapper/519:30:1011
39435269944148,392cyclictest0-21swapper/1323:32:485
39435349943912,424cyclictest0-21swapper/1523:18:487
39435269943918,29cyclictest0-21swapper/1322:40:485
394348699439439,0cyclictest0-21swapper/322:15:489
39435269943843,394cyclictest0-21swapper/1300:27:485
394352699437435,2cyclictest0-21swapper/1319:50:485
394349699437436,1cyclictest0-21swapper/622:16:1212
394349699436436,0cyclictest0-21swapper/623:51:3312
394349699436435,1cyclictest0-21swapper/620:56:1012
394350699435434,1cyclictest0-21swapper/921:51:4815
394351999432431,1cyclictest1818-21snmpd20:08:223
3943493994328,29cyclictest0-21swapper/523:35:0911
394348999432431,1cyclictest4193718-21kworker/4:2+i915-unordered00:18:4810
394350699431429,2cyclictest0-21swapper/923:05:4815
394350699431429,2cyclictest0-21swapper/923:05:4815
394348999430427,3cyclictest1818-21snmpd23:31:0010
39434869943011,30cyclictest0-21swapper/322:35:489
394347899430429,1cyclictest69750irq/159-i91521:52:481
3943526994284,30cyclictest0-21swapper/1319:27:485
394350699428428,0cyclictest0-21swapper/921:36:4815
39435019942814,29cyclictest0-21swapper/720:23:4813
394352699426426,0cyclictest0-21swapper/1321:27:315
39434939942626,398cyclictest0-21swapper/523:47:1111
3943493994260,30cyclictest0-21swapper/521:01:3411
394348699426425,1cyclictest0-21swapper/321:00:329
3943486994263,30cyclictest0-21swapper/320:16:489
3943486994263,30cyclictest0-21swapper/320:16:489
39434939942525,398cyclictest0-21swapper/520:57:3311
39434939942425,397cyclictest0-21swapper/521:32:0911
39434939942424,400cyclictest0-21swapper/519:29:1111
3943493994240,30cyclictest0-21swapper/500:24:1011
39434939942323,396cyclictest0-21swapper/521:10:3411
3943493994230,30cyclictest0-21swapper/522:53:1011
3943489994230,29cyclictest0-21swapper/421:26:4810
394350699422419,2cyclictest4084848-21kworker/u64:6+events_unbound23:01:4815
394350699422419,2cyclictest4084848-21kworker/u64:6+events_unbound23:01:4815
39434939942224,396cyclictest0-21swapper/521:42:1011
39434939942223,397cyclictest0-21swapper/523:51:0911
39434939942223,397cyclictest0-21swapper/522:56:1011
39434939942223,397cyclictest0-21swapper/519:58:1111
39434939942221,400cyclictest0-21swapper/523:03:3111
39434939942221,400cyclictest0-21swapper/523:03:3111
3943493994220,30cyclictest0-21swapper/520:47:1011
39435349942122,398cyclictest0-21swapper/1521:00:097
39435219942124,396cyclictest0-21swapper/1220:37:104
39434939942124,395cyclictest0-21swapper/521:50:3411
39434939942123,397cyclictest0-21swapper/519:39:3111
39434939942123,396cyclictest0-21swapper/523:11:1111
39434939942123,395cyclictest0-21swapper/519:41:0911
39434939942122,398cyclictest0-21swapper/500:34:3011
39434939942122,397cyclictest0-21swapper/522:47:3311
39434939942122,397cyclictest0-21swapper/519:49:3311
39435219942025,394cyclictest0-21swapper/1223:50:094
39435219942024,395cyclictest0-21swapper/1219:32:094
394349699420420,0cyclictest0-21swapper/619:58:4812
39434939942023,395cyclictest0-21swapper/522:34:3111
39434939942022,396cyclictest0-21swapper/520:24:3311
39434939942022,396cyclictest0-21swapper/500:05:3411
39434939942021,398cyclictest0-21swapper/522:13:3111
39435349941918,400cyclictest0-21swapper/1520:16:107
39435349941918,400cyclictest0-21swapper/1520:16:107
39435219941923,395cyclictest0-21swapper/1219:24:324
39435219941922,396cyclictest0-21swapper/1223:46:104
39435219941922,396cyclictest0-21swapper/1223:07:104
39435219941922,396cyclictest0-21swapper/1223:07:104
39435219941922,396cyclictest0-21swapper/1219:37:094
39434939941920,397cyclictest0-21swapper/523:19:3111
39434939941920,397cyclictest0-21swapper/522:25:3211
39434939941920,396cyclictest0-21swapper/521:29:3411
39434939941919,399cyclictest0-21swapper/500:14:1011
3943493994190,30cyclictest0-21swapper/521:36:1111
394348699419419,0cyclictest4053622-21kworker/3:1+pm21:35:009
39435349941820,397cyclictest0-21swapper/1520:59:117
39435349941819,398cyclictest0-21swapper/1523:54:327
39435349941819,398cyclictest0-21swapper/1520:12:107
39435349941819,398cyclictest0-21swapper/1520:12:107
39435349941819,398cyclictest0-21swapper/1519:36:317
39435269941826,0cyclictest0-21swapper/1300:32:485
39435219941821,396cyclictest0-21swapper/1222:31:314
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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