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2026-08-08 - 00:09
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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 Fri Aug 07, 2026 12:49:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
90509926163,0cyclictest151rcu_preempt11:19:521
3273912570,249ptp4l0-21swapper/107:05:451
330891208200,6phc2sys0-21swapper/207:06:4512
9074991953,1cyclictest151rcu_preempt10:24:2328
9074991953,1cyclictest151rcu_preempt10:24:2328
9054991916,108cyclictest0-21swapper/211:10:1712
9160991890,155cyclictest0-21swapper/2511:06:5418
9160991840,134cyclictest0-21swapper/2512:06:1518
9160991800,137cyclictest20985-21latency_hist08:10:0018
9160991760,122cyclictest0-21swapper/2509:51:0118
9160991760,122cyclictest0-21swapper/2509:51:0018
9160991750,144cyclictest0-21swapper/2510:32:4318
9160991750,144cyclictest0-21swapper/2510:32:4318
75052175168,6sleep30-21swapper/307:05:4923
9160991741,172cyclictest0-21swapper/2510:49:1718
9160991741,172cyclictest0-21swapper/2510:49:1618
9160991700,124cyclictest0-21swapper/2511:29:2218
908399165165,0cyclictest64-21ksoftirqd/809:40:0730
9083991530,88cyclictest0-21swapper/810:17:4830
9083991530,88cyclictest0-21swapper/810:17:4830
9160991513,126cyclictest25924-21taskset10:53:1718
9160991513,126cyclictest25924-21taskset10:53:1718
90659914716,130cyclictest0-21swapper/411:12:0626
90659914615,116cyclictest0-21swapper/410:45:0126
90659914615,116cyclictest0-21swapper/410:45:0126
9160991452,115cyclictest24176-21taskset10:08:5518
9160991452,115cyclictest24176-21taskset10:08:5518
90659914516,118cyclictest0-21swapper/412:28:3326
90659914515,95cyclictest0-21swapper/409:50:2626
90659914515,95cyclictest0-21swapper/409:50:2626
90659914515,95cyclictest0-21swapper/409:21:0426
90659914515,88cyclictest0-21swapper/407:55:0126
9160991443,114cyclictest21507-21taskset09:21:2018
90659914415,96cyclictest0-21swapper/409:36:0126
90659914315,101cyclictest0-21swapper/409:00:1426
90839914233,108cyclictest151rcu_preempt11:44:5530
90659914215,119cyclictest0-21swapper/407:20:1926
9160991410,83cyclictest0-21swapper/2508:14:5018
9096991410,81cyclictest0-21swapper/1110:01:023
9096991410,81cyclictest0-21swapper/1110:01:023
90659914115,93cyclictest0-21swapper/412:03:5826
91609914036,64cyclictest0-21swapper/2511:34:4318
91219914037,71cyclictest151rcu_preempt09:19:539
91219914037,71cyclictest151rcu_preempt09:19:529
9096991400,86cyclictest0-21swapper/1112:12:303
90659914015,116cyclictest0-21swapper/409:15:1226
90659914015,116cyclictest0-21swapper/409:15:1226
91609913717,88cyclictest20043-21taskset08:30:3518
9160991370,87cyclictest0-21swapper/2511:38:5818
92069913627,62cyclictest0-21swapper/3110:27:1325
92069913627,62cyclictest0-21swapper/3110:27:1325
91609913629,71cyclictest0-21swapper/2511:49:4018
91609913628,70cyclictest0-21swapper/2512:36:1118
90659913615,82cyclictest0-21swapper/412:07:4226
9044991360,87cyclictest0-21swapper/009:44:590
92069913557,72cyclictest0-21swapper/3111:30:3225
92069913536,58cyclictest0-21swapper/3109:20:3925
92069913530,68cyclictest0-21swapper/3110:41:2225
92069913530,68cyclictest0-21swapper/3110:41:2125
92069913529,63cyclictest0-21swapper/3107:36:5925
91609913531,68cyclictest0-21swapper/2512:26:3418
91609913529,71cyclictest0-21swapper/2511:23:2818
91609913529,71cyclictest0-21swapper/2511:02:3918
91609913529,71cyclictest0-21swapper/2511:02:3918
91609913529,71cyclictest0-21swapper/2510:57:5018
91609913529,71cyclictest0-21swapper/2510:57:4918
91609913527,67cyclictest0-21swapper/2512:10:3018
91609913526,68cyclictest0-21swapper/2510:27:2218
91609913526,68cyclictest0-21swapper/2510:27:2218
9160991352,110cyclictest0-21swapper/2509:41:5618
9121991350,79cyclictest0-21swapper/1712:34:599
90659913515,89cyclictest0-21swapper/410:55:3926
90659913515,89cyclictest0-21swapper/410:55:3826
90659913515,69cyclictest0-21swapper/410:52:5726
90659913515,69cyclictest0-21swapper/410:52:5726
92069913429,66cyclictest0-21swapper/3109:12:3725
92069913429,66cyclictest0-21swapper/3107:53:1825
92069913427,63cyclictest0-21swapper/3110:00:2925
92069913427,63cyclictest0-21swapper/3110:00:2825
9206991341,79cyclictest0-21swapper/3111:35:2025
9206991340,76cyclictest0-21swapper/3111:05:2425
9180991341,131cyclictest0-21swapper/2812:03:0121
91609913450,58cyclictest0-21swapper/2509:49:2518
91609913450,58cyclictest0-21swapper/2509:49:2418
91609913430,66cyclictest0-21swapper/2510:02:4718
91609913430,66cyclictest0-21swapper/2510:02:4618
91609913429,70cyclictest0-21swapper/2510:13:5118
91609913429,70cyclictest0-21swapper/2510:13:5018
91609913428,70cyclictest0-21swapper/2511:53:2418
91609913428,69cyclictest0-21swapper/2511:56:0618
92069913341,54cyclictest0-21swapper/3109:55:5625
92069913341,54cyclictest0-21swapper/3109:55:5525
92069913334,58cyclictest0-21swapper/3110:19:2425
92069913334,58cyclictest0-21swapper/3110:19:2425
92069913329,62cyclictest0-21swapper/3109:50:3425
92069913329,62cyclictest0-21swapper/3109:50:3425
92069913328,64cyclictest0-21swapper/3108:55:0025
91609913350,75cyclictest0-21swapper/2509:26:2518
91609913327,71cyclictest0-21swapper/2512:01:5818
92069913229,71cyclictest0-21swapper/3111:17:4225
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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