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2026-06-07 - 01:45
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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 Jun 06, 2026 00:49:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912680,260ptp4l0-21swapper/119:06:521
183862209200,7sleep270-21swapper/2719:05:2220
210129919717,1cyclictest151rcu_preempt22:24:5518
330891195185,7phc2sys0-21swapper/219:05:2212
209649918325,95cyclictest0-21swapper/1321:38:145
209649918325,95cyclictest0-21swapper/1321:38:135
20947991827,170cyclictest0-21swapper/921:05:0131
20947991817,145cyclictest0-21swapper/922:50:1831
208909918137,143cyclictest0-21swapper/022:18:000
208909917633,109cyclictest0-21swapper/000:16:290
208909917632,109cyclictest0-21swapper/022:39:480
208909917632,109cyclictest0-21swapper/022:39:470
20947991747,118cyclictest0-21swapper/923:30:2431
208909917127,101cyclictest0-21swapper/000:20:190
20947991697,128cyclictest0-21swapper/921:10:2331
20947991697,128cyclictest0-21swapper/921:10:2231
209479916610,153cyclictest151rcu_preempt22:34:3231
209479916610,153cyclictest151rcu_preempt22:34:3231
209479916310,151cyclictest151rcu_preempt21:25:1931
209479916310,151cyclictest151rcu_preempt21:25:1931
209479916110,148cyclictest151rcu_preempt21:47:4731
209479916110,148cyclictest151rcu_preempt21:47:4631
208909916129,81cyclictest0-21swapper/023:37:000
208909915824,92cyclictest0-21swapper/000:07:130
209569915662,93cyclictest82-21ksoftirqd/1123:10:253
20947991537,93cyclictest0-21swapper/921:30:4131
20947991537,93cyclictest0-21swapper/921:30:4031
208909915227,85cyclictest0-21swapper/000:11:290
20947991477,90cyclictest0-21swapper/900:07:1731
20947991467,88cyclictest0-21swapper/921:17:5031
20947991467,88cyclictest0-21swapper/921:17:5031
208909914645,62cyclictest0-21swapper/023:00:550
208909914530,78cyclictest0-21swapper/023:40:110
209649914312,129cyclictest151rcu_preempt23:22:155
208909914249,64cyclictest0-21swapper/023:24:330
2102399141140,0cyclictest185-21ksoftirqd/2821:45:1421
2102399141140,0cyclictest185-21ksoftirqd/2821:45:1321
209479913924,89cyclictest0-21swapper/900:16:2231
20900991390,88cyclictest0-21swapper/221:18:1512
20900991390,88cyclictest0-21swapper/221:18:1512
208909913950,55cyclictest0-21swapper/023:31:500
208909913943,59cyclictest0-21swapper/021:55:580
208909913943,59cyclictest0-21swapper/021:55:580
20900991380,91cyclictest0-21swapper/222:44:1812
20964991370,81cyclictest0-21swapper/1319:50:025
209949913657,78cyclictest0-21swapper/2122:44:0514
209479913651,59cyclictest0-21swapper/900:32:5631
208909913641,63cyclictest0-21swapper/021:38:410
208909913641,63cyclictest0-21swapper/021:38:400
208909913628,68cyclictest0-21swapper/020:35:170
208909913627,70cyclictest0-21swapper/022:42:440
209479913556,77cyclictest151rcu_preempt21:56:2031
209479913556,77cyclictest151rcu_preempt21:56:1931
208909913528,68cyclictest0-21swapper/021:45:500
208909913528,68cyclictest0-21swapper/021:45:490
208909913526,68cyclictest0-21swapper/021:10:350
208909913526,68cyclictest0-21swapper/021:10:340
20964991340,81cyclictest0-21swapper/1321:48:235
20964991340,81cyclictest0-21swapper/1321:48:225
209479913439,59cyclictest0-21swapper/922:00:0431
209479913439,59cyclictest0-21swapper/922:00:0431
210239913349,83cyclictest0-21swapper/2823:12:3421
208909913328,68cyclictest0-21swapper/022:22:070
208909913328,67cyclictest0-21swapper/021:26:370
208909913328,67cyclictest0-21swapper/021:26:360
208909913258,62cyclictest0-21swapper/000:36:350
208909913231,74cyclictest0-21swapper/022:26:260
208909913231,67cyclictest0-21swapper/021:33:000
208909913231,67cyclictest0-21swapper/021:32:590
208909913229,72cyclictest0-21swapper/022:51:300
208909913229,69cyclictest0-21swapper/023:10:170
208909913228,70cyclictest0-21swapper/019:37:330
208909913225,64cyclictest0-21swapper/022:05:010
208909913225,64cyclictest0-21swapper/022:05:010
209479913147,56cyclictest0-21swapper/920:14:3531
209479913144,55cyclictest0-21swapper/900:12:0531
209479913141,58cyclictest0-21swapper/919:54:2931
20904991310,75cyclictest0-21swapper/322:55:0123
208909913131,65cyclictest0-21swapper/023:08:230
208909913130,67cyclictest0-21swapper/022:14:580
208909913130,67cyclictest0-21swapper/022:14:580
20992991300,76cyclictest0-21swapper/2021:15:1313
20992991300,76cyclictest0-21swapper/2021:15:1313
209649913021,19cyclictest0-21swapper/1321:56:085
209649913021,19cyclictest0-21swapper/1321:56:085
209479913026,67cyclictest0-21swapper/919:17:3731
208909913034,50cyclictest0-21swapper/021:44:300
208909913034,50cyclictest0-21swapper/021:44:300
208909913033,70cyclictest0-21swapper/000:04:510
208909913031,75cyclictest0-21swapper/021:05:130
208909913031,75cyclictest0-21swapper/021:05:130
208909913029,69cyclictest0-21swapper/023:25:150
208909913029,68cyclictest0-21swapper/022:33:390
208909913029,68cyclictest0-21swapper/022:33:390
208909913028,65cyclictest0-21swapper/023:51:220
210029912927,60cyclictest0-21swapper/2321:35:1216
210029912927,60cyclictest0-21swapper/2321:35:1116
209479912946,57cyclictest0-21swapper/923:03:0931
209479912939,63cyclictest0-21swapper/923:35:1231
209479912928,70cyclictest0-21swapper/900:29:1131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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