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2026-01-08 - 18:58
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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 Thu Jan 08, 2026 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4630919945729,30cyclictest560325-21timerandwakeup21:04:3510
4631219945426,29cyclictest0-21swapper/1121:12:563
4631159945122,30cyclictest0-21swapper/1023:44:552
4630919945126,423cyclictest0-21swapper/422:22:1110
4631219945024,29cyclictest0-21swapper/1121:00:113
4631159945023,30cyclictest0-21swapper/1021:51:542
4631159945023,29cyclictest0-21swapper/1021:39:562
4631159945022,30cyclictest0-21swapper/1000:19:542
4631159944921,30cyclictest0-21swapper/1022:15:322
4630889944924,424cyclictest0-21swapper/319:27:119
4631389944820,30cyclictest0-21swapper/1519:35:347
4631309944825,30cyclictest0-21swapper/1322:07:115
4631159944822,29cyclictest0-21swapper/1019:51:572
4631309944721,29cyclictest0-21swapper/1300:15:115
4631159944722,30cyclictest0-21swapper/1019:13:552
4631159944719,29cyclictest0-21swapper/1020:05:342
4631309944619,28cyclictest0-21swapper/1322:57:115
4631219944418,30cyclictest0-21swapper/1123:11:113
4631219944417,29cyclictest0-21swapper/1120:02:113
4631079944421,28cyclictest0-21swapper/819:59:3314
4631219944317,29cyclictest0-21swapper/1121:55:113
4631219944316,30cyclictest0-21swapper/1100:16:113
4631219944214,30cyclictest0-21swapper/1120:24:343
4630819944223,30cyclictest0-21swapper/123:43:111
4631219944014,30cyclictest0-21swapper/1122:10:113
46309199440434,6cyclictest1802-21snmpd19:37:2210
46313099438434,3cyclictest1802-21snmpd20:24:245
4631309943810,30cyclictest0-21swapper/1323:04:325
4631309943512,30cyclictest0-21swapper/1319:24:335
463130994337,29cyclictest0-21swapper/1323:12:115
463121994335,30cyclictest0-21swapper/1122:54:333
46310099433431,1cyclictest0-21swapper/623:38:2312
463121994327,29cyclictest0-21swapper/1122:03:113
463121994309,30cyclictest0-21swapper/1119:31:333
463121994303,29cyclictest0-21swapper/1123:56:343
46309199430427,3cyclictest589198-21kworker/4:1+pm22:15:0610
463081994307,29cyclictest0-21swapper/120:35:111
463081994307,29cyclictest0-21swapper/120:35:111
463081994294,422cyclictest0-21swapper/119:53:111
463107994287,30cyclictest0-21swapper/821:01:3414
463107994284,30cyclictest0-21swapper/800:31:3314
46313399427424,2cyclictest442408-21kworker/14:2+pm19:11:076
463121994277,30cyclictest0-21swapper/1121:46:343
46312199427427,0cyclictest0-21swapper/1121:22:223
463121994270,29cyclictest0-21swapper/1100:37:563
463121994261,30cyclictest0-21swapper/1123:04:533
463121994260,29cyclictest0-21swapper/1121:08:353
463121994260,29cyclictest0-21swapper/1100:29:563
463091994260,30cyclictest0-21swapper/422:28:1110
463081994266,29cyclictest0-21swapper/123:33:111
4631219942526,398cyclictest0-21swapper/1122:18:563
463100994250,0cyclictest0-21swapper/622:43:5612
463130994240,30cyclictest0-21swapper/1323:22:545
463130994240,30cyclictest0-21swapper/1323:22:545
463130994240,30cyclictest0-21swapper/1319:52:555
463130994240,30cyclictest0-21swapper/1319:43:555
463091994240,29cyclictest0-21swapper/423:50:5510
4630819942426,397cyclictest0-21swapper/120:23:531
463130994231,30cyclictest0-21swapper/1323:18:345
463130994230,30cyclictest0-21swapper/1323:48:565
463130994230,29cyclictest0-21swapper/1320:54:535
4630919942324,395cyclictest0-21swapper/423:15:1110
46308899423421,1cyclictest710727-21kworker/3:0+i915-unordered00:12:549
4630819942325,397cyclictest0-21swapper/123:26:331
4630819942325,397cyclictest0-21swapper/123:26:331
4630819942324,398cyclictest0-21swapper/121:40:321
4630919942226,394cyclictest0-21swapper/420:46:1110
463133994210,419cyclictest0-21swapper/1400:21:116
4630919942125,395cyclictest0-21swapper/423:58:1110
4631009942023,396cyclictest0-21swapper/620:23:1112
4630919941820,397cyclictest0-21swapper/419:45:1110
4630919941817,398cyclictest0-21swapper/400:06:5410
4630919941721,394cyclictest0-21swapper/421:35:1110
46308499417415,1cyclictest698358-21kworker/2:1+i915-unordered23:54:568
4631009941621,394cyclictest0-21swapper/619:32:1112
4630919941517,396cyclictest0-21swapper/421:39:3510
4630819941523,392cyclictest0-21swapper/119:18:111
4631159941422,391cyclictest0-21swapper/1022:33:112
4631009941416,397cyclictest0-21swapper/620:59:3312
46308499414413,0cyclictest0-21swapper/222:32:568
4630889941319,393cyclictest0-21swapper/321:10:119
4630819941319,391cyclictest0-21swapper/121:06:111
4630819941317,395cyclictest0-21swapper/119:57:541
4630819941316,397cyclictest0-21swapper/122:31:331
4630819941316,397cyclictest0-21swapper/120:33:571
4630819941316,397cyclictest0-21swapper/120:33:571
463115994120,29cyclictest0-21swapper/1019:34:062
4631009941216,395cyclictest0-21swapper/620:10:1112
4630819941216,395cyclictest0-21swapper/120:41:331
4630819941216,395cyclictest0-21swapper/120:41:331
4630819941215,397cyclictest0-21swapper/121:30:541
4630819941214,397cyclictest0-21swapper/120:46:341
4630819941214,397cyclictest0-21swapper/119:30:341
4631389941116,394cyclictest0-21swapper/1523:32:117
4631009941113,395cyclictest0-21swapper/600:23:1112
4630849941113,397cyclictest0-21swapper/219:37:118
4630819941114,396cyclictest0-21swapper/123:35:331
4630819941114,396cyclictest0-21swapper/123:01:541
4630819941113,398cyclictest0-21swapper/119:40:541
4630819941113,397cyclictest0-21swapper/123:21:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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