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2026-05-22 - 10:09
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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 Fri May 22, 2026 00:49:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912850,278ptp4l0-21swapper/119:07:061
254459926165,2cyclictest151rcu_preempt23:44:3828
240632210203,6sleep170-21swapper/1719:08:179
254129917842,96cyclictest0-21swapper/023:30:580
254129917841,136cyclictest0-21swapper/022:42:360
254129917841,136cyclictest0-21swapper/022:42:350
254129916836,83cyclictest0-21swapper/021:30:440
254129916833,100cyclictest0-21swapper/023:12:010
255219916749,66cyclictest0-21swapper/2420:45:1117
254129916530,81cyclictest0-21swapper/022:56:470
254129916530,81cyclictest0-21swapper/022:56:470
254129916227,90cyclictest0-21swapper/023:18:570
254129916227,90cyclictest0-21swapper/023:18:560
254129916222,127cyclictest0-21swapper/019:35:010
255219916033,74cyclictest0-21swapper/2421:25:1417
255219915629,86cyclictest0-21swapper/2423:49:0517
255599915460,66cyclictest0-21swapper/3023:54:3924
255219915123,92cyclictest0-21swapper/2422:20:1917
255219915123,92cyclictest0-21swapper/2422:20:1817
255519914619,120cyclictest151rcu_preempt21:11:2922
25551991460,90cyclictest0-21swapper/2900:09:0522
25521991460,86cyclictest0-21swapper/2419:45:1917
254829914625,78cyclictest0-21swapper/1500:23:177
255089914519,94cyclictest0-21swapper/2122:16:4314
255089914519,94cyclictest0-21swapper/2122:16:4314
25498991440,84cyclictest0-21swapper/1923:55:1511
25551991430,90cyclictest0-21swapper/2921:03:0522
255219914327,76cyclictest0-21swapper/2422:40:1917
255219914327,76cyclictest0-21swapper/2422:40:1817
254129914339,72cyclictest0-21swapper/022:07:500
254129914339,72cyclictest0-21swapper/022:07:500
2548299142111,31cyclictest106-21ksoftirqd/1521:27:567
25456991420,87cyclictest0-21swapper/923:31:1931
254229914224,85cyclictest0-21swapper/219:30:1112
254129914226,68cyclictest0-21swapper/021:46:460
254129914226,68cyclictest0-21swapper/021:46:450
254229914123,79cyclictest0-21swapper/222:20:4012
254229914123,79cyclictest0-21swapper/222:20:4012
25521991400,87cyclictest0-21swapper/2400:00:1717
2551199140138,1cyclictest151rcu_preempt23:25:4015
255219913831,66cyclictest0-21swapper/2400:35:1517
255089913819,72cyclictest0-21swapper/2121:36:0714
25482991380,86cyclictest0-21swapper/1521:11:567
254229913833,65cyclictest0-21swapper/222:40:4112
254229913833,65cyclictest0-21swapper/222:40:4112
255219913756,62cyclictest0-21swapper/2423:21:5217
255219913756,62cyclictest0-21swapper/2423:21:5217
25521991370,83cyclictest0-21swapper/2423:13:2717
254989913750,58cyclictest0-21swapper/1923:30:5811
255219913662,33cyclictest0-21swapper/2422:35:1417
255219913662,33cyclictest0-21swapper/2422:35:1317
255219913644,57cyclictest0-21swapper/2421:15:0517
255089913657,66cyclictest0-21swapper/2100:14:1814
255089913632,70cyclictest0-21swapper/2120:05:3114
255089913630,67cyclictest0-21swapper/2123:28:3614
255089913629,66cyclictest0-21swapper/2123:50:1514
255089913629,65cyclictest0-21swapper/2123:44:5314
255089913625,63cyclictest0-21swapper/2123:14:5814
254989913627,63cyclictest0-21swapper/1920:24:2511
254129913647,62cyclictest0-21swapper/020:49:300
255519913521,85cyclictest0-21swapper/2923:50:2522
255459913558,41cyclictest0-21swapper/2822:28:2121
255459913558,41cyclictest0-21swapper/2822:28:2021
255219913549,58cyclictest0-21swapper/2420:00:0117
255219913530,70cyclictest0-21swapper/2422:50:1417
255219913530,70cyclictest0-21swapper/2422:50:1317
255219913530,68cyclictest0-21swapper/2400:15:1317
255089913530,68cyclictest0-21swapper/2123:55:3514
255089913528,65cyclictest0-21swapper/2123:30:1314
254129913552,63cyclictest0-21swapper/022:23:410
254129913552,63cyclictest0-21swapper/022:23:400
255599913421,17cyclictest0-21swapper/3023:33:3824
255219913424,72cyclictest0-21swapper/2420:40:2217
255089913449,52cyclictest0-21swapper/2122:04:5614
255089913449,52cyclictest0-21swapper/2122:04:5614
255089913429,64cyclictest0-21swapper/2122:29:1614
255089913429,64cyclictest0-21swapper/2122:29:1614
254989913456,61cyclictest0-21swapper/1900:07:4011
254989913450,58cyclictest0-21swapper/1900:04:0611
254989913449,58cyclictest0-21swapper/1920:46:5011
254229913429,67cyclictest0-21swapper/221:50:5812
254229913410,123cyclictest151rcu_preempt21:13:1812
255459913345,58cyclictest0-21swapper/2821:34:5621
255379913326,63cyclictest0-21swapper/2721:12:0820
255219913330,75cyclictest161-21ksoftirqd/2419:35:1117
255219913329,69cyclictest0-21swapper/2420:55:2017
255219913327,67cyclictest0-21swapper/2423:57:3417
255219913326,64cyclictest0-21swapper/2420:15:1317
255119913326,71cyclictest0-21swapper/2221:43:0315
25508991333,91cyclictest9499-21timerwakeupswit20:10:2114
255089913328,60cyclictest0-21swapper/2100:25:3114
255089913328,60cyclictest0-21swapper/2100:23:2314
254989913345,55cyclictest0-21swapper/1921:43:5011
254989913343,58cyclictest0-21swapper/1921:04:2811
254989913342,52cyclictest0-21swapper/1900:20:0811
254989913324,61cyclictest0-21swapper/1919:56:4011
25417991330,79cyclictest0-21swapper/123:58:571
254129913348,59cyclictest0-21swapper/021:20:020
255519913213,85cyclictest0-21swapper/2900:00:1222
255459913244,61cyclictest0-21swapper/2820:50:1821
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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