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2026-05-12 - 09:58
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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 Tue May 12, 2026 00:49:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913270,318ptp4l0-21swapper/119:07:061
219859917860,1cyclictest151rcu_preempt23:50:2330
219859917860,1cyclictest151rcu_preempt23:50:2330
220569916532,106cyclictest0-21swapper/2322:49:5516
220569916532,106cyclictest0-21swapper/2322:49:5416
220569916324,135cyclictest0-21swapper/2300:05:1716
220569916324,135cyclictest0-21swapper/2300:05:1716
220569915921,104cyclictest0-21swapper/2323:09:4116
220569915921,104cyclictest0-21swapper/2323:09:4116
220569915831,63cyclictest0-21swapper/2323:33:1016
220569915831,63cyclictest0-21swapper/2323:33:1016
22009991502,114cyclictest0-21swapper/1121:03:583
22009991424,112cyclictest0-21swapper/1120:35:013
22018991410,83cyclictest0-21swapper/1319:35:135
220789913914,81cyclictest10730-21diskmemload23:05:1921
220789913914,81cyclictest10730-21diskmemload23:05:1921
220789913914,124cyclictest0-21swapper/2820:30:1921
220789913914,118cyclictest0-21swapper/2821:40:1821
220609913925,47cyclictest151rcu_preempt22:00:0217
220789913714,82cyclictest0-21swapper/2800:00:2121
220789913714,82cyclictest0-21swapper/2800:00:2121
220789913614,89cyclictest0-21swapper/2800:16:2121
220789913614,89cyclictest0-21swapper/2800:16:2121
220189913535,63cyclictest0-21swapper/1319:14:235
219429913428,101cyclictest0-21swapper/221:30:1712
220189913229,68cyclictest0-21swapper/1322:45:285
220189913229,68cyclictest0-21swapper/1322:45:285
220189913229,63cyclictest0-21swapper/1323:25:015
220189913229,63cyclictest0-21swapper/1323:25:015
219429913239,92cyclictest0-21swapper/220:40:1412
178952132124,6sleep280-21swapper/2819:05:1821
22054991310,81cyclictest0-21swapper/2223:34:1615
22054991310,81cyclictest0-21swapper/2223:34:1515
220189913151,59cyclictest0-21swapper/1300:01:225
220189913151,59cyclictest0-21swapper/1300:01:225
220189913147,57cyclictest0-21swapper/1323:05:475
220189913147,57cyclictest0-21swapper/1323:05:475
22018991310,73cyclictest0-21swapper/1320:30:165
220789913014,32cyclictest0-21swapper/2822:40:2521
22033991300,84cyclictest0-21swapper/1700:08:239
22033991300,84cyclictest0-21swapper/1700:08:239
220189913044,54cyclictest0-21swapper/1323:18:045
220189913044,54cyclictest0-21swapper/1323:18:045
220189913028,68cyclictest0-21swapper/1321:31:435
220189913027,103cyclictest0-21swapper/1320:19:345
22065991292,62cyclictest151rcu_preempt23:41:1518
22065991292,62cyclictest151rcu_preempt23:41:1518
220189912930,74cyclictest0-21swapper/1321:14:055
220189912929,72cyclictest0-21swapper/1322:20:115
220189912929,71cyclictest0-21swapper/1300:12:385
220189912929,71cyclictest0-21swapper/1300:12:385
220189912927,67cyclictest0-21swapper/1300:08:195
220189912927,67cyclictest0-21swapper/1300:08:195
220959912815,88cyclictest0-21swapper/3123:24:1525
220959912815,88cyclictest0-21swapper/3123:24:1525
22060991288,117cyclictest151rcu_preempt22:20:2417
220189912849,63cyclictest0-21swapper/1323:25:205
220189912849,63cyclictest0-21swapper/1323:25:205
220189912847,60cyclictest0-21swapper/1323:38:105
220189912847,60cyclictest0-21swapper/1323:38:105
220189912838,65cyclictest0-21swapper/1300:36:055
220189912829,69cyclictest0-21swapper/1323:40:165
220189912829,69cyclictest0-21swapper/1323:40:165
220189912829,68cyclictest0-21swapper/1321:49:535
220189912826,63cyclictest0-21swapper/1320:20:275
220569912735,54cyclictest0-21swapper/2321:35:0416
220189912732,76cyclictest0-21swapper/1321:59:305
220189912732,65cyclictest0-21swapper/1320:50:345
220189912730,75cyclictest0-21swapper/1321:54:425
220189912729,70cyclictest0-21swapper/1300:30:165
220189912727,67cyclictest0-21swapper/1321:28:305
220189912726,67cyclictest0-21swapper/1320:42:335
220959912642,57cyclictest0-21swapper/3121:58:1125
220959912629,60cyclictest0-21swapper/3123:47:1425
220959912629,60cyclictest0-21swapper/3123:47:1425
220959912615,41cyclictest0-21swapper/3100:30:0025
220959912615,41cyclictest0-21swapper/3100:30:0025
220189912663,62cyclictest0-21swapper/1321:00:115
220189912631,72cyclictest0-21swapper/1300:17:245
220189912631,72cyclictest0-21swapper/1300:17:245
220189912629,71cyclictest0-21swapper/1323:52:175
220189912629,71cyclictest0-21swapper/1323:52:165
22078991250,86cyclictest0-21swapper/2800:24:2421
22078991250,86cyclictest0-21swapper/2800:24:2321
220609912510,112cyclictest151rcu_preempt19:23:2717
220569912538,58cyclictest0-21swapper/2322:22:5516
220189912527,64cyclictest0-21swapper/1319:53:235
220099912572,51cyclictest151rcu_preempt22:26:443
219429912527,96cyclictest0-21swapper/221:16:1612
220959912460,19cyclictest0-21swapper/3122:42:0125
220959912432,57cyclictest0-21swapper/3100:21:5925
220959912432,57cyclictest0-21swapper/3100:21:5925
220569912425,66cyclictest0-21swapper/2320:10:3916
220569912421,57cyclictest0-21swapper/2321:30:4916
220189912444,69cyclictest0-21swapper/1319:20:165
220189912435,73cyclictest0-21swapper/1323:04:295
220099912462,42cyclictest0-21swapper/1121:48:473
219429912433,57cyclictest0-21swapper/200:24:1012
219429912433,57cyclictest0-21swapper/200:24:1012
22060991234,64cyclictest0-21swapper/2420:45:1117
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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