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2026-04-04 - 00:31
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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 Apr 03, 2026 12:49:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912850,277ptp4l0-21swapper/107:06:501
3273912850,277ptp4l0-21swapper/107:06:501
174469918212,169cyclictest0-21swapper/607:35:1728
174469918112,145cyclictest0-21swapper/608:10:1628
330891171164,6phc2sys0-21swapper/207:08:2112
330891171164,6phc2sys0-21swapper/207:08:2112
174419916441,88cyclictest0-21swapper/511:52:3427
174419916441,88cyclictest0-21swapper/511:52:3427
174359916018,118cyclictest0-21swapper/310:53:5823
174359915725,109cyclictest0-21swapper/311:15:4023
174469915612,87cyclictest0-21swapper/609:25:0428
174469915512,105cyclictest0-21swapper/612:39:1928
174359915325,99cyclictest0-21swapper/311:43:5923
174359915325,99cyclictest0-21swapper/311:43:5923
174419915247,70cyclictest0-21swapper/511:15:4227
174469915112,106cyclictest0-21swapper/611:55:1628
174469915112,106cyclictest0-21swapper/611:55:1628
174419914933,78cyclictest0-21swapper/507:45:1627
174919914550,58cyclictest0-21swapper/1607:31:268
17520991440,85cyclictest0-21swapper/2007:48:5213
17458991441,86cyclictest0-21swapper/911:05:0431
17458991441,86cyclictest0-21swapper/911:05:0431
174469914412,83cyclictest0-21swapper/611:36:0128
174469914412,83cyclictest0-21swapper/611:36:0128
174469914412,67cyclictest0-21swapper/611:00:1328
174919914256,56cyclictest0-21swapper/1609:31:298
174919914249,57cyclictest0-21swapper/1610:15:178
174809914245,66cyclictest0-21swapper/1407:45:176
17441991410,88cyclictest0-21swapper/511:00:1627
174919914056,60cyclictest0-21swapper/1612:28:048
174919914056,60cyclictest0-21swapper/1612:28:048
174919914052,59cyclictest0-21swapper/1609:58:008
174919914049,57cyclictest0-21swapper/1610:55:228
17458991400,79cyclictest0-21swapper/908:37:4131
174919913962,64cyclictest0-21swapper/1611:01:158
174589913962,42cyclictest0-21swapper/912:00:3931
174589913962,42cyclictest0-21swapper/912:00:3931
17441991390,86cyclictest0-21swapper/510:34:3227
17441991390,84cyclictest0-21swapper/509:13:3627
17430991390,31cyclictest151rcu_preempt09:14:2112
175399913846,55cyclictest0-21swapper/2307:15:3016
175399913824,80cyclictest0-21swapper/2310:15:2116
174919913828,63cyclictest0-21swapper/1611:20:138
174919913828,63cyclictest0-21swapper/1611:20:138
174469913812,81cyclictest0-21swapper/610:29:4528
174419913832,54cyclictest0-21swapper/509:20:5827
175399913748,61cyclictest0-21swapper/2307:12:4916
174419913629,69cyclictest0-21swapper/512:35:5227
174919913427,64cyclictest0-21swapper/1608:02:458
174469913449,55cyclictest0-21swapper/611:11:2628
174469913449,55cyclictest0-21swapper/611:11:2628
174419913442,64cyclictest0-21swapper/509:28:1627
174919913329,64cyclictest0-21swapper/1608:40:408
174919913328,61cyclictest0-21swapper/1612:20:208
174919913328,61cyclictest0-21swapper/1612:20:208
174589913356,46cyclictest0-21swapper/909:21:2331
174469913350,54cyclictest0-21swapper/609:37:5428
174919913232,64cyclictest0-21swapper/1609:05:178
17460991320,77cyclictest0-21swapper/1007:33:282
174589913211,120cyclictest151rcu_preempt09:34:1331
174419913246,65cyclictest0-21swapper/510:35:2427
174419913228,70cyclictest0-21swapper/509:15:1027
174419913226,66cyclictest0-21swapper/510:00:2127
174359913225,105cyclictest0-21swapper/310:46:1623
175399913150,58cyclictest0-21swapper/2311:59:4916
175399913150,58cyclictest0-21swapper/2311:59:4916
174469913139,62cyclictest0-21swapper/609:54:5928
174469913138,57cyclictest0-21swapper/611:21:3528
174469913138,57cyclictest0-21swapper/611:21:3528
174419913148,59cyclictest0-21swapper/512:02:1227
174419913148,59cyclictest0-21swapper/512:02:1227
174419913147,66cyclictest0-21swapper/507:38:4327
174419913129,67cyclictest0-21swapper/512:25:4327
174419913129,67cyclictest0-21swapper/512:25:4327
174419913129,66cyclictest0-21swapper/511:59:3127
174419913129,66cyclictest0-21swapper/511:59:3127
174419913129,66cyclictest0-21swapper/511:14:3727
174419913129,66cyclictest0-21swapper/511:14:3727
175399913064,65cyclictest0-21swapper/2311:34:4216
175399913064,65cyclictest0-21swapper/2311:34:4216
175399913046,65cyclictest0-21swapper/2311:35:4616
175399913046,65cyclictest0-21swapper/2311:35:4616
175399913042,57cyclictest0-21swapper/2311:55:0116
175399913042,57cyclictest0-21swapper/2311:55:0116
175399913039,59cyclictest0-21swapper/2310:25:1316
175399913028,64cyclictest0-21swapper/2310:21:2916
175209913054,49cyclictest0-21swapper/2008:20:0013
174919913042,54cyclictest0-21swapper/1610:23:538
174469913050,60cyclictest0-21swapper/611:53:0728
174469913050,60cyclictest0-21swapper/611:53:0728
174469913048,56cyclictest0-21swapper/607:25:2328
174419913030,71cyclictest0-21swapper/511:31:4427
174419913030,71cyclictest0-21swapper/511:31:4427
174419913030,70cyclictest0-21swapper/512:32:0727
174419913030,70cyclictest0-21swapper/512:32:0727
174419913029,68cyclictest0-21swapper/512:23:3427
174419913029,68cyclictest0-21swapper/512:23:3427
174419913029,67cyclictest0-21swapper/511:49:3827
174419913029,67cyclictest0-21swapper/511:49:3827
174419913029,65cyclictest0-21swapper/510:27:3527
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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