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2025-11-22 - 10:56
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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 Nov 22, 2025 00:49:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
85539941013,198cyclictest151rcu_preempt23:08:1326
2482913000,292ptp4l0-21swapper/119:07:141
86879923911,146cyclictest0-21swapper/2619:55:2319
86879923911,146cyclictest0-21swapper/2619:55:2319
86239921779,88cyclictest8657-21wc19:10:027
85539921012,1cyclictest151rcu_preempt23:35:1626
8584991657,108cyclictest0-21swapper/923:28:3331
86509916113,89cyclictest151rcu_preempt22:29:4613
86509915949,109cyclictest137-21ksoftirqd/2023:35:3613
86879915410,92cyclictest0-21swapper/2621:38:4319
86879915410,103cyclictest0-21swapper/2622:41:4819
86879915310,140cyclictest0-21swapper/2623:00:3119
86879915110,91cyclictest0-21swapper/2622:39:0819
86699914863,76cyclictest0-21swapper/2300:24:3616
8584991457,86cyclictest0-21swapper/923:06:3931
85319914544,60cyclictest0-21swapper/019:40:020
85319914544,60cyclictest0-21swapper/019:40:020
8650991430,84cyclictest0-21swapper/2022:49:0013
85319914353,61cyclictest0-21swapper/023:34:520
85319914352,56cyclictest0-21swapper/021:05:120
86169914246,95cyclictest0-21swapper/1422:15:236
85469914126,77cyclictest0-21swapper/323:35:2323
85319914148,60cyclictest0-21swapper/021:16:150
85319914130,64cyclictest0-21swapper/021:21:330
86509914045,62cyclictest0-21swapper/2000:35:2713
8650991400,87cyclictest0-21swapper/2000:26:1313
855799140138,1cyclictest151rcu_preempt22:55:2127
855799140138,1cyclictest151rcu_preempt21:15:5627
855799140138,0cyclictest151rcu_preempt21:11:4127
85319914052,58cyclictest0-21swapper/021:31:100
85319914024,66cyclictest0-21swapper/021:25:160
8650991390,83cyclictest0-21swapper/2022:36:1813
8650991380,86cyclictest0-21swapper/2020:15:1413
8650991380,86cyclictest0-21swapper/2020:15:1413
8584991380,82cyclictest0-21swapper/921:29:2331
8546991383,57cyclictest0-21swapper/322:00:3223
85319913848,58cyclictest0-21swapper/022:24:520
85319913845,64cyclictest0-21swapper/000:10:070
86699913727,65cyclictest0-21swapper/2322:20:2216
86699913727,65cyclictest0-21swapper/2321:05:0216
86509913750,52cyclictest0-21swapper/2022:00:0713
8605991370,85cyclictest0-21swapper/1219:10:194
85319913728,71cyclictest0-21swapper/000:15:140
86699913665,47cyclictest0-21swapper/2322:36:4916
86699913649,63cyclictest0-21swapper/2322:41:4616
86699913628,66cyclictest0-21swapper/2300:27:2716
86699913627,62cyclictest0-21swapper/2323:35:1216
86509913628,64cyclictest0-21swapper/2022:23:2613
86509913628,64cyclictest0-21swapper/2021:05:1813
86509913616,31cyclictest0-21swapper/2021:19:5313
85319913633,73cyclictest0-21swapper/023:22:360
85319913630,67cyclictest0-21swapper/022:35:180
86699913530,70cyclictest0-21swapper/2320:58:0516
8669991352,79cyclictest0-21swapper/2321:40:1816
86699913526,65cyclictest0-21swapper/2300:05:4016
86509913551,56cyclictest0-21swapper/2000:32:4813
85319913548,50cyclictest0-21swapper/000:25:220
85319913531,65cyclictest0-21swapper/021:40:140
86699913430,67cyclictest0-21swapper/2321:01:1816
86699913428,67cyclictest0-21swapper/2300:36:0716
86699913425,64cyclictest0-21swapper/2320:00:2216
86699913425,64cyclictest0-21swapper/2320:00:2216
86509913429,69cyclictest0-21swapper/2021:35:0113
86509913429,67cyclictest0-21swapper/2022:14:4613
86509913426,62cyclictest0-21swapper/2020:35:2413
85319913434,64cyclictest0-21swapper/021:50:230
85319913433,60cyclictest0-21swapper/023:41:040
85319913428,63cyclictest0-21swapper/023:00:260
8697991330,74cyclictest0-21swapper/2920:50:1022
86699913350,56cyclictest0-21swapper/2323:47:3016
86699913329,67cyclictest0-21swapper/2320:05:4416
86699913329,67cyclictest0-21swapper/2320:05:4316
86699913328,69cyclictest0-21swapper/2321:55:1516
86699913327,62cyclictest0-21swapper/2300:19:0216
86509913332,74cyclictest0-21swapper/2019:25:3213
86509913332,74cyclictest0-21swapper/2019:25:3213
86509913330,70cyclictest0-21swapper/2020:00:1913
86509913330,70cyclictest0-21swapper/2020:00:1813
86509913328,65cyclictest0-21swapper/2020:25:1513
86509913328,65cyclictest0-21swapper/2020:25:1513
86509913325,65cyclictest0-21swapper/2020:40:1113
85319913339,59cyclictest0-21swapper/020:45:140
85319913335,56cyclictest0-21swapper/023:25:450
85319913328,60cyclictest0-21swapper/000:31:130
86699913231,72cyclictest0-21swapper/2322:50:1916
86699913228,70cyclictest0-21swapper/2323:08:2916
86699913227,64cyclictest0-21swapper/2321:18:2316
86699913224,63cyclictest0-21swapper/2320:43:0816
86699913224,61cyclictest0-21swapper/2323:30:2316
86509913231,70cyclictest0-21swapper/2021:33:4613
86509913229,68cyclictest0-21swapper/2023:15:2613
8650991321,80cyclictest0-21swapper/2021:00:2913
85849913229,66cyclictest0-21swapper/900:29:2931
86699913130,72cyclictest0-21swapper/2321:32:4916
86509913128,71cyclictest0-21swapper/2019:35:0113
86509913128,71cyclictest0-21swapper/2019:35:0113
86509913128,70cyclictest0-21swapper/2000:15:1613
86509913127,69cyclictest0-21swapper/2023:59:3213
86509913116,67cyclictest0-21swapper/2021:28:5613
86169913136,62cyclictest0-21swapper/1422:31:266
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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