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2026-08-16 - 21:49
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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 Sun Aug 16, 2026 12:49:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913160,309ptp4l0-21swapper/107:06:591
1457399300102,41cyclictest151rcu_preempt09:11:4127
1470299193128,2cyclictest151rcu_preempt11:05:5420
14628991561,150cyclictest151rcu_preempt11:58:254
133102154146,6sleep20-21swapper/207:09:3312
14558991468,135cyclictest151rcu_preempt12:05:0712
147239914450,59cyclictest0-21swapper/3109:38:0125
147239914450,59cyclictest0-21swapper/3109:38:0025
14558991440,90cyclictest0-21swapper/208:50:1612
146289914331,62cyclictest0-21swapper/1207:25:164
14558991400,87cyclictest0-21swapper/211:08:4112
146689913937,63cyclictest0-21swapper/2010:45:1713
145589913910,127cyclictest151rcu_preempt09:58:0912
145589913910,127cyclictest151rcu_preempt09:58:0912
14636991370,85cyclictest0-21swapper/1309:00:045
14558991370,85cyclictest0-21swapper/208:00:1612
147239913628,71cyclictest0-21swapper/3109:59:1025
147239913628,71cyclictest0-21swapper/3109:59:1025
147239913626,65cyclictest0-21swapper/3110:55:3325
14654991360,91cyclictest0-21swapper/1611:03:038
147239913548,54cyclictest0-21swapper/3110:06:3925
147239913548,54cyclictest0-21swapper/3110:06:3925
147239913449,54cyclictest0-21swapper/3111:17:4425
147239913430,70cyclictest0-21swapper/3110:14:4025
147239913430,70cyclictest0-21swapper/3110:14:4025
147239913428,70cyclictest0-21swapper/3111:35:2225
147239913428,65cyclictest0-21swapper/3111:31:3825
146689913448,53cyclictest0-21swapper/2008:37:3313
147239913327,61cyclictest0-21swapper/3109:51:4125
147239913327,61cyclictest0-21swapper/3109:51:4125
147239913326,61cyclictest0-21swapper/3112:22:5525
146289913331,83cyclictest0-21swapper/1212:27:494
147239913233,72cyclictest0-21swapper/3108:50:1325
147239913230,76cyclictest0-21swapper/3111:28:2525
147239913230,74cyclictest0-21swapper/3111:40:5725
147239913229,75cyclictest0-21swapper/3110:31:4625
147239913229,75cyclictest0-21swapper/3110:31:4625
147239913228,67cyclictest0-21swapper/3112:37:5225
147239913227,70cyclictest0-21swapper/3109:15:1925
147239913227,70cyclictest0-21swapper/3109:15:1925
147239913226,64cyclictest0-21swapper/3109:27:3725
147239913226,64cyclictest0-21swapper/3109:27:3725
147239913226,63cyclictest0-21swapper/3107:25:1425
147239913132,74cyclictest0-21swapper/3110:23:1325
147239913132,74cyclictest0-21swapper/3110:23:1325
147239913131,72cyclictest0-21swapper/3107:36:1425
147239913130,69cyclictest0-21swapper/3107:50:2225
147239913128,69cyclictest0-21swapper/3111:54:3625
147239913127,70cyclictest0-21swapper/3111:11:1925
147239913125,63cyclictest0-21swapper/3108:26:4225
147239913029,71cyclictest0-21swapper/3109:31:2225
147239913029,71cyclictest0-21swapper/3109:31:2225
147239913029,65cyclictest0-21swapper/3108:36:0325
147239913028,72cyclictest0-21swapper/3112:17:0425
146689913037,52cyclictest0-21swapper/2011:45:1913
147239912951,75cyclictest0-21swapper/3107:22:0325
147239912932,75cyclictest0-21swapper/3112:00:5925
147239912929,74cyclictest0-21swapper/3110:40:1925
147239912929,72cyclictest0-21swapper/3109:45:4825
147239912929,72cyclictest0-21swapper/3109:45:4825
147239912926,61cyclictest0-21swapper/3108:33:0725
14636991290,100cyclictest94-21ksoftirqd/1310:41:055
14583991290,87cyclictest0-21swapper/607:21:0628
147239912833,74cyclictest0-21swapper/3111:20:2425
147239912832,74cyclictest0-21swapper/3111:05:2525
147239912832,74cyclictest0-21swapper/3110:02:5425
147239912832,74cyclictest0-21swapper/3110:02:5425
147239912830,72cyclictest0-21swapper/3108:58:3025
147239912828,77cyclictest0-21swapper/3110:53:0825
146689912830,59cyclictest0-21swapper/2010:44:1313
146689912829,58cyclictest0-21swapper/2009:55:0213
146689912829,58cyclictest0-21swapper/2009:55:0213
14636991280,79cyclictest0-21swapper/1312:32:485
145589912747,78cyclictest151rcu_preempt12:04:1712
147239912632,77cyclictest0-21swapper/3110:37:3925
147239912630,78cyclictest0-21swapper/3111:59:5525
146139912622,48cyclictest0-21swapper/1008:50:242
131022126118,6sleep70-21swapper/707:06:2629
147239912533,71cyclictest0-21swapper/3108:45:2425
147239912532,77cyclictest0-21swapper/3108:10:0825
146689912526,58cyclictest0-21swapper/2012:35:5213
14636991250,89cyclictest0-21swapper/1309:35:535
14636991250,89cyclictest0-21swapper/1309:35:535
147239912432,64cyclictest0-21swapper/3111:00:0625
147239912334,81cyclictest0-21swapper/3110:46:4425
147239912328,58cyclictest0-21swapper/3109:05:1125
147239912328,58cyclictest0-21swapper/3109:05:1125
147239912326,57cyclictest0-21swapper/3111:49:4825
14688991230,86cyclictest0-21swapper/2412:39:1117
146369912229,75cyclictest8905-21taskset12:07:245
146369912227,73cyclictest21315-21taskset07:12:245
146289912244,51cyclictest0-21swapper/1211:46:594
146289912239,54cyclictest0-21swapper/1212:22:294
146289912146,53cyclictest0-21swapper/1211:41:174
146289912145,53cyclictest0-21swapper/1212:35:474
146289912124,57cyclictest0-21swapper/1210:50:304
146289912120,59cyclictest0-21swapper/1210:11:284
146289912120,59cyclictest0-21swapper/1210:11:284
145589912141,54cyclictest0-21swapper/209:24:2812
145589912141,54cyclictest0-21swapper/209:24:2812
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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