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2026-05-02 - 18:10
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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 Sat May 02, 2026 12:49:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
320232337327,7sleep150-21swapper/1507:05:217
320232337327,7sleep150-21swapper/1507:05:217
3273912710,263ptp4l0-21swapper/107:06:031
3273912710,263ptp4l0-21swapper/107:06:031
25969924210,229cyclictest0-21swapper/2210:18:0615
25969924042,1cyclictest151rcu_preempt11:37:1315
25969924042,1cyclictest151rcu_preempt11:37:1215
330891225217,6phc2sys0-21swapper/207:05:4012
330891225217,6phc2sys0-21swapper/207:05:3912
24839919013,156cyclictest0-21swapper/510:33:0527
2645991641,149cyclictest0-21swapper/2909:42:1022
2489991640,161cyclictest151rcu_preempt11:00:3528
2645991631,136cyclictest0-21swapper/2912:34:3022
2645991631,136cyclictest0-21swapper/2912:34:3022
2645991621,123cyclictest0-21swapper/2910:13:4322
2645991621,120cyclictest0-21swapper/2910:29:5822
2645991601,130cyclictest0-21swapper/2912:01:4122
2645991601,130cyclictest0-21swapper/2912:01:4122
25109916024,134cyclictest0-21swapper/911:55:4131
25109916024,134cyclictest0-21swapper/911:55:4131
25969915771,85cyclictest149-21ksoftirqd/2211:30:4115
25969915771,85cyclictest149-21ksoftirqd/2211:30:4115
25109915724,89cyclictest0-21swapper/909:50:3731
25109915724,86cyclictest0-21swapper/909:36:1131
25109915724,100cyclictest0-21swapper/907:50:2331
25109915624,94cyclictest0-21swapper/908:45:1231
25109915624,76cyclictest0-21swapper/911:41:1531
25109915624,76cyclictest0-21swapper/911:41:1531
25109915624,131cyclictest0-21swapper/909:42:0431
25109915623,98cyclictest0-21swapper/912:01:5131
25109915623,98cyclictest0-21swapper/912:01:5131
25109915622,108cyclictest0-21swapper/908:00:1731
25109915424,92cyclictest0-21swapper/910:17:0731
2477991532,129cyclictest0-21swapper/409:16:2426
2477991532,118cyclictest0-21swapper/411:34:3326
2477991532,118cyclictest0-21swapper/411:34:3326
2477991522,128cyclictest0-21swapper/412:37:2226
2477991522,128cyclictest0-21swapper/412:37:2226
2477991522,126cyclictest0-21swapper/411:15:2026
2477991522,126cyclictest0-21swapper/411:15:1926
2477991522,121cyclictest0-21swapper/412:04:1126
2477991522,121cyclictest0-21swapper/412:04:1126
2489991480,99cyclictest52-21ksoftirqd/611:20:0128
2489991480,99cyclictest52-21ksoftirqd/611:20:0128
25109914624,74cyclictest0-21swapper/910:35:3131
2477991462,118cyclictest0-21swapper/409:10:1726
25109914424,63cyclictest0-21swapper/910:00:1431
2549991430,81cyclictest0-21swapper/1511:52:037
2549991430,81cyclictest0-21swapper/1511:52:037
2638991420,85cyclictest0-21swapper/2809:05:1921
25499914230,68cyclictest0-21swapper/1509:57:087
2549991410,83cyclictest0-21swapper/1510:12:067
25109914124,71cyclictest0-21swapper/909:17:2931
26249914050,58cyclictest0-21swapper/2608:15:3719
2624991400,85cyclictest0-21swapper/2611:12:4119
2624991400,81cyclictest0-21swapper/2611:15:2119
2624991400,81cyclictest0-21swapper/2611:15:2119
25499914029,65cyclictest0-21swapper/1511:34:567
25499914029,65cyclictest0-21swapper/1511:34:567
2549991400,83cyclictest0-21swapper/1508:35:227
2549991400,83cyclictest0-21swapper/1507:40:217
2624991390,82cyclictest0-21swapper/2611:46:2019
2624991390,82cyclictest0-21swapper/2611:46:2019
25499913929,66cyclictest0-21swapper/1509:30:247
25719913832,42cyclictest0-21swapper/1809:18:1010
25499913830,67cyclictest0-21swapper/1511:39:137
25499913830,67cyclictest0-21swapper/1511:39:137
25499913830,66cyclictest0-21swapper/1509:53:237
25499913829,66cyclictest0-21swapper/1510:49:317
2549991381,83cyclictest0-21swapper/1510:21:437
2549991380,81cyclictest0-21swapper/1511:06:057
2489991389,126cyclictest151rcu_preempt09:26:3128
2477991382,105cyclictest0-21swapper/411:23:5726
26249913754,58cyclictest0-21swapper/2612:25:2219
26249913754,58cyclictest0-21swapper/2612:25:2219
25499913727,66cyclictest0-21swapper/1510:01:577
2549991370,79cyclictest0-21swapper/1511:02:527
2549991370,77cyclictest0-21swapper/1507:46:127
2645991365,130cyclictest0-21swapper/2908:50:1822
26249913629,65cyclictest0-21swapper/2610:55:2019
26249913627,67cyclictest0-21swapper/2609:45:1619
2549991360,82cyclictest0-21swapper/1509:38:587
2549991360,82cyclictest0-21swapper/1509:22:557
26249913529,67cyclictest0-21swapper/2610:19:1419
26249913526,68cyclictest0-21swapper/2610:30:4919
2624991351,82cyclictest0-21swapper/2609:22:4919
2624991351,79cyclictest0-21swapper/2612:20:3319
2624991351,79cyclictest0-21swapper/2612:20:3319
25499913527,66cyclictest0-21swapper/1510:15:507
2645991341,110cyclictest0-21swapper/2909:08:1222
2624991341,77cyclictest0-21swapper/2607:15:2419
2624991340,79cyclictest0-21swapper/2611:26:3419
2624991340,79cyclictest0-21swapper/2611:26:3419
25499913428,62cyclictest0-21swapper/1512:24:087
25499913428,62cyclictest0-21swapper/1512:24:077
25499913415,71cyclictest0-21swapper/1508:00:067
2549991340,77cyclictest0-21swapper/1507:16:177
2549991340,76cyclictest0-21swapper/1508:25:137
2645991331,103cyclictest0-21swapper/2909:36:3122
26249913333,65cyclictest0-21swapper/2611:52:0419
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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