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2026-05-04 - 09:07
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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 Mon May 04, 2026 00:49:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2469699311110,200cyclictest151rcu_preempt21:24:1828
2469699311110,200cyclictest151rcu_preempt21:24:1728
3273913050,298ptp4l0-21swapper/119:09:091
204292249241,6sleep240-21swapper/2419:05:1417
24709991931,171cyclictest151rcu_preempt23:06:0230
246839917233,111cyclictest0-21swapper/421:59:3526
246839917233,111cyclictest0-21swapper/421:59:3426
246839917133,80cyclictest0-21swapper/400:13:5226
246839916728,124cyclictest0-21swapper/422:40:2326
246839916728,124cyclictest0-21swapper/422:40:2226
247099916223,134cyclictest151rcu_preempt21:55:3130
247099916223,134cyclictest151rcu_preempt21:55:3030
247099916010,142cyclictest151rcu_preempt22:05:4330
247099916010,142cyclictest151rcu_preempt22:05:4330
247099915820,133cyclictest151rcu_preempt21:26:4030
247099915820,133cyclictest151rcu_preempt21:26:4030
246839915827,103cyclictest0-21swapper/420:05:2126
248489915420,95cyclictest0-21swapper/3120:45:0125
246969914724,59cyclictest0-21swapper/621:25:1228
246969914724,59cyclictest0-21swapper/621:25:1128
246839914538,54cyclictest0-21swapper/421:20:4226
246839914538,54cyclictest0-21swapper/421:20:4226
248489914413,112cyclictest0-21swapper/3122:47:0925
248489914413,112cyclictest0-21swapper/3122:47:0925
248249914451,58cyclictest0-21swapper/2821:25:2221
248249914451,58cyclictest0-21swapper/2821:25:2221
247099914140,65cyclictest0-21swapper/822:28:4430
247099914140,65cyclictest0-21swapper/822:28:4330
248249914050,59cyclictest0-21swapper/2823:15:1021
246839914031,71cyclictest0-21swapper/422:01:5126
246839914031,71cyclictest0-21swapper/422:01:5026
248249913945,59cyclictest0-21swapper/2823:03:4321
247099913927,74cyclictest0-21swapper/820:35:2630
24672991390,79cyclictest0-21swapper/221:23:1412
24672991390,79cyclictest0-21swapper/221:23:1312
248249913863,68cyclictest0-21swapper/2823:35:1721
248249913830,63cyclictest0-21swapper/2822:39:3721
248249913830,63cyclictest0-21swapper/2822:39:3721
247099913851,60cyclictest0-21swapper/821:19:4230
246839913723,73cyclictest0-21swapper/422:21:4326
246839913723,73cyclictest0-21swapper/422:21:4326
246729913549,58cyclictest0-21swapper/221:02:1012
248249913430,62cyclictest0-21swapper/2821:40:2021
248249913430,62cyclictest0-21swapper/2821:40:2021
24739991340,83cyclictest0-21swapper/1420:53:196
24672991340,73cyclictest0-21swapper/223:16:1912
248489913325,73cyclictest0-21swapper/3123:41:4125
248249913329,62cyclictest0-21swapper/2800:00:2321
248249913326,64cyclictest0-21swapper/2800:17:0321
248249913324,67cyclictest0-21swapper/2800:05:1121
24709991339,86cyclictest151rcu_preempt00:37:2730
247099913332,66cyclictest0-21swapper/823:25:1730
248249913229,61cyclictest0-21swapper/2822:04:5221
248249913229,61cyclictest0-21swapper/2822:04:5121
247099913212,74cyclictest0-21swapper/819:40:1830
247099913144,56cyclictest0-21swapper/823:39:1130
247099913142,65cyclictest0-21swapper/823:19:5630
247099913128,69cyclictest0-21swapper/800:30:0030
247099913123,76cyclictest151rcu_preempt21:47:0030
247099913123,76cyclictest151rcu_preempt21:47:0030
247099913111,74cyclictest0-21swapper/820:55:1230
246729913145,56cyclictest0-21swapper/222:53:5212
24672991310,77cyclictest0-21swapper/222:40:1312
24672991310,77cyclictest0-21swapper/222:40:1312
248249913037,56cyclictest0-21swapper/2822:40:5121
248249913037,56cyclictest0-21swapper/2822:40:5121
248249913029,59cyclictest0-21swapper/2821:13:1121
248159913043,18cyclictest151rcu_preempt20:55:1720
247099913043,69cyclictest0-21swapper/821:30:2330
247099913043,69cyclictest0-21swapper/821:30:2330
247099913027,66cyclictest0-21swapper/800:13:2430
247099913026,70cyclictest0-21swapper/800:04:2030
246919913027,60cyclictest0-21swapper/522:15:1227
246919913027,60cyclictest0-21swapper/522:15:1227
248249912931,59cyclictest0-21swapper/2823:55:0221
248249912928,59cyclictest0-21swapper/2819:58:4421
2479799129127,2cyclictest151rcu_preempt23:30:0218
247099912929,66cyclictest0-21swapper/800:24:5730
247099912927,68cyclictest0-21swapper/819:20:0230
247099912927,66cyclictest0-21swapper/819:55:3530
247099912926,69cyclictest0-21swapper/800:30:3030
247099912925,64cyclictest0-21swapper/822:49:5930
247099912925,64cyclictest0-21swapper/822:49:5930
247099912925,63cyclictest0-21swapper/800:19:1630
246919912948,59cyclictest0-21swapper/521:15:3427
246839912948,53cyclictest0-21swapper/423:04:1426
246729912938,60cyclictest0-21swapper/219:11:3312
248249912828,61cyclictest0-21swapper/2821:18:2621
248249912828,58cyclictest0-21swapper/2822:20:5721
248249912828,58cyclictest0-21swapper/2822:20:5721
247099912828,66cyclictest0-21swapper/822:30:1930
247099912828,66cyclictest0-21swapper/822:30:1830
247099912826,61cyclictest0-21swapper/819:30:0830
246919912843,52cyclictest0-21swapper/522:30:5627
246919912843,52cyclictest0-21swapper/522:30:5527
246919912842,55cyclictest0-21swapper/500:21:5227
246919912827,64cyclictest0-21swapper/523:37:1227
246919912826,22cyclictest0-21swapper/519:45:0027
246839912826,67cyclictest0-21swapper/422:17:2226
246839912826,67cyclictest0-21swapper/422:17:2226
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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