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2026-07-07 - 10:57
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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 Tue Jul 07, 2026 00:49:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912840,275ptp4l0-21swapper/119:06:351
270282266259,6sleep290-21swapper/2919:06:0022
330891256244,9phc2sys0-21swapper/219:05:0812
286539920226,3cyclictest151rcu_preempt23:10:5111
286749918813,121cyclictest0-21swapper/2221:14:5515
286749918813,121cyclictest0-21swapper/2221:14:5515
285259917316,153cyclictest0-21swapper/322:01:0623
287289917224,136cyclictest0-21swapper/2923:13:2922
285259917216,111cyclictest0-21swapper/323:32:2923
285259917216,111cyclictest0-21swapper/323:32:2823
287289917023,127cyclictest0-21swapper/2922:45:2122
287289916822,111cyclictest0-21swapper/2923:25:2622
287289916822,111cyclictest0-21swapper/2923:25:2522
2853499165128,37cyclictest40-21ksoftirqd/422:52:2726
287289916323,95cyclictest0-21swapper/2923:15:1722
287289916323,95cyclictest0-21swapper/2923:15:1722
285259916216,91cyclictest0-21swapper/321:30:2423
285259916216,91cyclictest0-21swapper/321:30:2423
285259916116,91cyclictest0-21swapper/321:13:4623
285259916116,91cyclictest0-21swapper/321:13:4623
287289916023,103cyclictest0-21swapper/2923:00:1922
285259915915,89cyclictest0-21swapper/321:25:1723
285259915915,89cyclictest0-21swapper/321:25:1623
272002159152,6sleep280-21swapper/2819:08:3921
285259915116,85cyclictest0-21swapper/322:47:0123
285259914715,93cyclictest0-21swapper/300:29:4123
28534991467,117cyclictest0-21swapper/421:25:2126
28534991467,117cyclictest0-21swapper/421:25:2126
285259914515,112cyclictest0-21swapper/321:49:3323
285259914515,112cyclictest0-21swapper/321:49:3323
285259914415,126cyclictest151rcu_preempt23:06:5023
28681991420,83cyclictest0-21swapper/2319:25:2316
28534991426,87cyclictest0-21swapper/421:15:1226
28534991426,87cyclictest0-21swapper/421:15:1226
286819913635,100cyclictest151rcu_preempt00:31:3716
287289913520,77cyclictest0-21swapper/2923:31:3822
287289913520,77cyclictest0-21swapper/2923:31:3722
287289913516,91cyclictest0-21swapper/2922:31:1422
286749913413,116cyclictest0-21swapper/2223:55:1515
28534991347,83cyclictest0-21swapper/422:15:2026
287459913332,68cyclictest0-21swapper/3120:57:1125
287459913332,68cyclictest0-21swapper/3120:57:1125
28629991335,119cyclictest0-21swapper/1623:30:228
28629991335,119cyclictest0-21swapper/1623:30:228
287459913223,64cyclictest0-21swapper/3119:51:2825
28745991320,77cyclictest0-21swapper/3121:31:3825
28745991320,77cyclictest0-21swapper/3121:31:3725
286819913228,20cyclictest0-21swapper/2322:19:3616
28534991316,78cyclictest0-21swapper/423:36:0226
28534991316,78cyclictest0-21swapper/423:36:0126
287459913027,66cyclictest0-21swapper/3122:58:4525
286749913013,74cyclictest0-21swapper/2223:19:5915
286749913013,74cyclictest0-21swapper/2223:19:5815
285259913016,53cyclictest0-21swapper/300:30:1323
287459912947,56cyclictest0-21swapper/3119:30:1925
287459912927,65cyclictest0-21swapper/3100:20:3125
287459912926,69cyclictest0-21swapper/3121:36:2625
287459912926,69cyclictest0-21swapper/3121:36:2625
287459912924,60cyclictest0-21swapper/3100:03:2425
287459912920,73cyclictest0-21swapper/3123:32:5725
287459912920,73cyclictest0-21swapper/3123:32:5725
28674991290,83cyclictest0-21swapper/2219:25:2215
287459912850,57cyclictest0-21swapper/3120:11:1025
287459912827,72cyclictest0-21swapper/3122:22:0925
287459912827,69cyclictest0-21swapper/3122:07:2625
287459912734,63cyclictest0-21swapper/3121:50:5225
287459912734,63cyclictest0-21swapper/3121:50:5225
287459912729,71cyclictest0-21swapper/3119:29:4625
287459912726,65cyclictest0-21swapper/3120:16:0225
287459912724,66cyclictest0-21swapper/3121:05:2425
287459912724,66cyclictest0-21swapper/3121:05:2425
286819912716,67cyclictest0-21swapper/2321:13:5116
286819912716,67cyclictest0-21swapper/2321:13:5116
285259912742,59cyclictest0-21swapper/322:24:3723
285259912716,90cyclictest0-21swapper/319:33:4923
287459912627,68cyclictest0-21swapper/3123:00:2125
287459912627,64cyclictest0-21swapper/3123:24:5625
287459912627,64cyclictest0-21swapper/3123:24:5525
287459912625,69cyclictest0-21swapper/3120:37:5625
286299912634,57cyclictest0-21swapper/1622:20:218
287459912553,59cyclictest0-21swapper/3121:58:5225
287459912531,69cyclictest0-21swapper/3100:29:3725
287459912526,68cyclictest0-21swapper/3123:59:4125
287459912525,62cyclictest0-21swapper/3122:02:0525
286749912513,54cyclictest0-21swapper/2222:11:3415
285259912544,55cyclictest0-21swapper/321:24:4523
285259912544,55cyclictest0-21swapper/321:24:4423
287459912430,68cyclictest0-21swapper/3123:15:3325
287459912430,68cyclictest0-21swapper/3123:15:3325
287459912428,70cyclictest0-21swapper/3123:37:1325
287459912428,70cyclictest0-21swapper/3123:37:1225
287459912427,68cyclictest0-21swapper/3100:05:0025
28697991240,87cyclictest0-21swapper/2523:58:3118
286299912424,91cyclictest0-21swapper/1621:26:028
286299912424,91cyclictest0-21swapper/1621:26:028
287459912343,49cyclictest0-21swapper/3122:40:3325
287459912326,65cyclictest0-21swapper/3121:25:1225
287459912326,65cyclictest0-21swapper/3121:25:1225
287459912324,67cyclictest0-21swapper/3122:16:1725
287289912369,45cyclictest0-21swapper/2923:50:2122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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