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2026-04-02 - 20:51
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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 rackcslot8.osadl.org (updated Thu Apr 02, 2026 12:49:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913280,320ptp4l0-21swapper/107:06:441
18869916728,93cyclictest0-21swapper/2212:29:4515
18869916725,95cyclictest0-21swapper/2212:19:3515
19069916137,119cyclictest0-21swapper/2510:33:4818
327382160153,6sleep180-21swapper/1807:08:4610
1784991588,145cyclictest151rcu_preempt12:21:1930
19069915730,125cyclictest0-21swapper/2512:32:5018
18289914620,125cyclictest0-21swapper/1411:49:326
18289914520,101cyclictest0-21swapper/1412:34:566
18289914420,74cyclictest0-21swapper/1411:21:116
18289914420,123cyclictest0-21swapper/1408:15:136
18289914420,123cyclictest0-21swapper/1408:15:126
18289914420,109cyclictest0-21swapper/1411:30:176
1886991420,84cyclictest0-21swapper/2208:07:2015
1886991420,84cyclictest0-21swapper/2208:07:2015
18289914220,79cyclictest0-21swapper/1407:48:006
18289914220,79cyclictest0-21swapper/1407:48:006
1886991411,81cyclictest0-21swapper/2211:45:2315
17849914159,72cyclictest0-21swapper/812:05:1530
19069914025,72cyclictest0-21swapper/2511:53:2618
19069914023,77cyclictest0-21swapper/2510:42:5318
19069913936,14cyclictest0-21swapper/2508:27:0918
19069913936,14cyclictest0-21swapper/2508:27:0918
17849913957,59cyclictest0-21swapper/808:20:1630
17849913957,59cyclictest0-21swapper/808:20:1630
17849913838,97cyclictest0-21swapper/809:21:5730
1886991370,82cyclictest0-21swapper/2211:11:1115
18869913655,61cyclictest0-21swapper/2209:29:3815
1886991361,83cyclictest0-21swapper/2210:52:5915
17849913666,45cyclictest0-21swapper/811:20:2230
17849913538,94cyclictest0-21swapper/810:35:1130
17849913528,62cyclictest0-21swapper/808:41:5830
17849913528,62cyclictest0-21swapper/808:41:5830
18869913449,61cyclictest0-21swapper/2210:10:1515
18869913426,67cyclictest0-21swapper/2211:05:1815
1739991340,86cyclictest0-21swapper/012:00:200
1739991340,83cyclictest0-21swapper/007:55:330
1739991340,83cyclictest0-21swapper/007:55:320
19069913336,6cyclictest0-21swapper/2508:35:1018
19069913336,6cyclictest0-21swapper/2508:35:0918
1906991330,81cyclictest0-21swapper/2511:09:3618
1886991330,79cyclictest0-21swapper/2210:15:3615
17849913343,65cyclictest0-21swapper/809:39:2130
1906991320,82cyclictest0-21swapper/2511:03:0418
18869913229,73cyclictest0-21swapper/2209:18:5615
18869913227,65cyclictest0-21swapper/2207:35:1615
18869913224,78cyclictest0-21swapper/2209:44:3515
1886991320,77cyclictest0-21swapper/2209:52:3615
17849913242,54cyclictest0-21swapper/811:41:4330
18869913127,68cyclictest0-21swapper/2211:37:2115
1886991310,85cyclictest0-21swapper/2211:40:1915
17849913156,41cyclictest0-21swapper/808:25:0430
17849913156,41cyclictest0-21swapper/808:25:0430
17849913126,61cyclictest0-21swapper/809:59:5330
17849913125,62cyclictest0-21swapper/811:51:5430
18869913031,69cyclictest0-21swapper/2212:30:0115
18869913027,65cyclictest0-21swapper/2207:28:2015
18869913024,70cyclictest0-21swapper/2212:05:4215
1886991300,76cyclictest0-21swapper/2212:23:5215
17979913014,87cyclictest151rcu_preempt09:00:022
17849913035,63cyclictest0-21swapper/811:47:0530
17849913026,60cyclictest0-21swapper/810:00:4430
18869912928,63cyclictest0-21swapper/2209:59:0115
17849912931,69cyclictest0-21swapper/809:40:5430
17849912930,64cyclictest0-21swapper/809:45:4230
18869912860,67cyclictest0-21swapper/2210:36:2615
18869912833,60cyclictest0-21swapper/2210:23:0415
18869912829,68cyclictest0-21swapper/2212:36:4115
18869912828,67cyclictest0-21swapper/2212:11:0115
1849991280,73cyclictest0-21swapper/1709:00:089
1849991280,73cyclictest0-21swapper/1709:00:089
18289912820,79cyclictest0-21swapper/1409:54:366
17979912854,46cyclictest0-21swapper/1009:28:532
17849912829,67cyclictest0-21swapper/810:13:2130
17849912829,67cyclictest0-21swapper/807:11:5230
17849912828,65cyclictest0-21swapper/809:26:4530
17849912827,67cyclictest0-21swapper/812:38:0530
17849912826,68cyclictest0-21swapper/811:28:2330
1739991287,117cyclictest151rcu_preempt09:47:200
1886991274,74cyclictest0-21swapper/2211:03:1015
18869912731,67cyclictest0-21swapper/2209:32:1815
1886991270,79cyclictest0-21swapper/2210:04:5415
17849912727,69cyclictest0-21swapper/811:00:1730
17849912727,66cyclictest0-21swapper/812:31:2730
17849912726,70cyclictest0-21swapper/810:05:4530
17849912726,66cyclictest0-21swapper/810:29:1630
17849912726,65cyclictest0-21swapper/810:47:2730
18929912610,91cyclictest0-21swapper/2312:18:1716
18929912610,77cyclictest0-21swapper/2307:25:0816
18929912610,74cyclictest0-21swapper/2311:21:2116
18929912610,102cyclictest0-21swapper/2312:09:5816
1886991267,78cyclictest0-21swapper/2209:49:5515
18869912628,68cyclictest0-21swapper/2208:45:1515
18869912628,68cyclictest0-21swapper/2208:45:1415
18869912623,61cyclictest0-21swapper/2208:59:1015
18869912623,61cyclictest0-21swapper/2208:59:0915
17849912631,72cyclictest0-21swapper/809:30:1630
17849912629,74cyclictest0-21swapper/808:30:2430
17849912629,74cyclictest0-21swapper/808:30:2430
17849912628,64cyclictest0-21swapper/810:33:0730
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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