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2026-07-10 - 08:36
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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 Jul 10, 2026 00:49:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912890,282ptp4l0-21swapper/119:09:141
330891213204,6phc2sys0-21swapper/219:05:1612
301339921358,56cyclictest151rcu_preempt21:17:5510
301339921358,56cyclictest151rcu_preempt21:17:5410
302349914826,25cyclictest0-21swapper/3021:13:3224
302349914826,25cyclictest0-21swapper/3021:13:3124
302349914725,120cyclictest0-21swapper/3000:20:5824
302349914525,119cyclictest0-21swapper/3022:44:2224
302349914426,90cyclictest0-21swapper/3021:59:2824
302349914426,90cyclictest0-21swapper/3021:59:2824
300959914353,55cyclictest0-21swapper/1322:48:555
300959914252,60cyclictest0-21swapper/1300:02:095
301669914110,105cyclictest0-21swapper/2221:40:2515
301669914110,105cyclictest0-21swapper/2221:40:2515
300959914151,57cyclictest0-21swapper/1300:14:585
300959914151,56cyclictest0-21swapper/1300:39:025
301419914020,46cyclictest0-21swapper/1922:03:0311
301419914020,46cyclictest0-21swapper/1922:03:0211
300959913929,69cyclictest0-21swapper/1322:50:195
30133991370,81cyclictest0-21swapper/1823:00:1310
30118991370,89cyclictest0-21swapper/1622:45:018
300959913758,69cyclictest0-21swapper/1320:58:495
300959913757,59cyclictest0-21swapper/1322:23:475
300959913757,59cyclictest0-21swapper/1322:23:475
300959913731,65cyclictest0-21swapper/1319:30:065
300959913729,66cyclictest0-21swapper/1321:36:465
300959913729,66cyclictest0-21swapper/1321:36:455
300959913655,68cyclictest0-21swapper/1322:40:535
300959913622,64cyclictest0-21swapper/1320:44:555
301419913524,68cyclictest0-21swapper/1921:28:1911
301419913524,68cyclictest0-21swapper/1921:28:1811
30133991351,87cyclictest0-21swapper/1800:30:0110
300959913529,64cyclictest0-21swapper/1319:10:055
300959913529,61cyclictest0-21swapper/1300:31:005
300959913456,69cyclictest0-21swapper/1323:22:355
300959913435,59cyclictest0-21swapper/1323:30:235
300959913431,67cyclictest0-21swapper/1321:18:355
300959913431,67cyclictest0-21swapper/1321:18:355
300959913429,67cyclictest0-21swapper/1321:49:365
300959913429,67cyclictest0-21swapper/1321:49:355
300959913332,69cyclictest0-21swapper/1321:14:185
300959913332,69cyclictest0-21swapper/1321:14:185
300959913329,65cyclictest0-21swapper/1321:25:335
300959913329,65cyclictest0-21swapper/1321:25:325
300959913328,61cyclictest0-21swapper/1320:35:185
300959913318,69cyclictest0-21swapper/1323:40:155
300959913231,68cyclictest0-21swapper/1323:45:345
300959913230,66cyclictest0-21swapper/1323:25:485
300959913229,59cyclictest0-21swapper/1300:18:425
300959913227,61cyclictest0-21swapper/1319:35:275
302349913126,15cyclictest0-21swapper/3021:08:1024
302019913150,65cyclictest0-21swapper/2622:11:1119
302019913145,61cyclictest0-21swapper/2600:37:0619
302019913132,65cyclictest0-21swapper/2619:15:2219
302019913126,68cyclictest0-21swapper/2622:30:2619
301419913136,60cyclictest0-21swapper/1923:26:5611
301189913141,41cyclictest0-21swapper/1620:00:258
300959913129,70cyclictest0-21swapper/1323:57:195
302019913049,52cyclictest0-21swapper/2621:52:2819
302019913049,52cyclictest0-21swapper/2621:52:2819
302019913029,69cyclictest0-21swapper/2621:18:0619
302019913029,69cyclictest0-21swapper/2621:18:0619
302019913028,73cyclictest0-21swapper/2622:09:3419
302019913028,73cyclictest0-21swapper/2622:09:3419
302019913028,68cyclictest0-21swapper/2621:14:3119
302019913028,68cyclictest0-21swapper/2621:14:3119
302019913028,67cyclictest0-21swapper/2621:33:1419
302019913028,67cyclictest0-21swapper/2621:33:1419
302019913026,68cyclictest0-21swapper/2622:01:2519
302019913026,68cyclictest0-21swapper/2622:01:2419
302019913026,67cyclictest0-21swapper/2621:40:4219
302019913026,67cyclictest0-21swapper/2621:40:4219
302019913026,67cyclictest0-21swapper/2619:30:1919
301419913027,68cyclictest0-21swapper/1921:30:5911
301419913027,68cyclictest0-21swapper/1921:30:5911
301419913027,62cyclictest0-21swapper/1923:51:0111
300959913047,51cyclictest0-21swapper/1322:18:275
300959913047,51cyclictest0-21swapper/1322:18:275
300959913030,66cyclictest0-21swapper/1322:00:485
300959913030,66cyclictest0-21swapper/1322:00:485
300959913022,64cyclictest0-21swapper/1319:50:245
300959913016,68cyclictest0-21swapper/1323:08:095
302019912930,69cyclictest0-21swapper/2623:35:2419
302019912928,70cyclictest0-21swapper/2623:05:2719
302019912928,68cyclictest0-21swapper/2621:27:2119
302019912928,68cyclictest0-21swapper/2621:27:2119
302019912927,70cyclictest0-21swapper/2623:00:2119
302019912927,70cyclictest0-21swapper/2622:50:1219
302019912927,68cyclictest0-21swapper/2623:32:4019
302019912927,68cyclictest0-21swapper/2622:46:2719
302019912926,72cyclictest0-21swapper/2600:25:2219
302019912920,66cyclictest0-21swapper/2621:57:0219
302019912920,66cyclictest0-21swapper/2621:57:0119
301419912928,70cyclictest0-21swapper/1921:42:4511
301419912928,70cyclictest0-21swapper/1921:42:4411
300959912945,52cyclictest0-21swapper/1321:32:125
300959912945,52cyclictest0-21swapper/1321:32:125
300959912928,59cyclictest0-21swapper/1320:00:345
300959912915,65cyclictest0-21swapper/1321:51:435
300959912915,65cyclictest0-21swapper/1321:51:435
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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