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2026-04-04 - 20:27
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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 Apr 04, 2026 12:49:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2592999326126,199cyclictest151rcu_preempt10:30:1931
2592999326126,199cyclictest151rcu_preempt10:30:1831
244732315308,6sleep270-21swapper/2707:07:1820
2594999313115,1cyclictest151rcu_preempt11:23:364
2594999313115,1cyclictest151rcu_preempt11:23:354
260089929887,13cyclictest143-21ksoftirqd/2111:33:3514
260089929887,13cyclictest143-21ksoftirqd/2111:33:3414
3273912840,276ptp4l0-21swapper/107:09:041
260459917234,109cyclictest0-21swapper/2711:05:2220
260459916340,74cyclictest0-21swapper/2711:50:1420
260459916340,74cyclictest0-21swapper/2711:50:1420
259089916232,129cyclictest52-21ksoftirqd/612:17:2628
259089916232,129cyclictest52-21ksoftirqd/612:17:2628
260459916033,98cyclictest0-21swapper/2707:35:1820
260089915518,135cyclictest0-21swapper/2110:15:0014
260089915518,135cyclictest0-21swapper/2109:10:2114
260089915419,102cyclictest0-21swapper/2111:25:3414
260089915419,102cyclictest0-21swapper/2111:25:3314
260089915318,86cyclictest0-21swapper/2109:16:4514
259299915324,55cyclictest0-21swapper/912:30:2031
260089915218,100cyclictest0-21swapper/2112:07:4314
260089915218,100cyclictest0-21swapper/2112:07:4214
330891151143,6phc2sys0-21swapper/207:08:2112
260459914928,70cyclictest0-21swapper/2712:15:2220
260459914928,70cyclictest0-21swapper/2712:15:2120
259899914513,77cyclictest0-21swapper/1812:13:3510
259259914526,99cyclictest151rcu_preempt09:53:1730
258979914526,56cyclictest0-21swapper/411:35:1426
258979914526,56cyclictest0-21swapper/411:35:1326
25957991430,83cyclictest0-21swapper/1311:12:045
260089914218,72cyclictest0-21swapper/2110:20:2114
26008991410,85cyclictest0-21swapper/2111:10:3614
260459914018,93cyclictest0-21swapper/2709:32:4220
260209913943,61cyclictest0-21swapper/2312:06:1216
260209913943,61cyclictest0-21swapper/2312:06:1216
259899913820,87cyclictest0-21swapper/1810:06:2210
260209913745,56cyclictest0-21swapper/2310:55:3916
260089913719,117cyclictest0-21swapper/2112:12:0314
260209913627,69cyclictest0-21swapper/2311:49:3816
260209913627,69cyclictest0-21swapper/2311:49:3716
259899913616,107cyclictest0-21swapper/1810:40:0510
259899913616,107cyclictest0-21swapper/1810:40:0410
259089913633,102cyclictest0-21swapper/612:10:4528
260209913531,68cyclictest0-21swapper/2310:30:0116
260209913531,68cyclictest0-21swapper/2310:30:0016
260209913529,71cyclictest0-21swapper/2309:06:0616
260209913526,65cyclictest0-21swapper/2310:34:1816
260209913526,65cyclictest0-21swapper/2310:34:1716
259089913445,53cyclictest0-21swapper/611:11:5728
25972991330,69cyclictest0-21swapper/1511:44:107
25972991330,69cyclictest0-21swapper/1511:44:097
260209913254,65cyclictest0-21swapper/2311:35:1216
260209913254,65cyclictest0-21swapper/2311:35:1216
260209913242,55cyclictest0-21swapper/2312:25:2716
260209913228,70cyclictest0-21swapper/2308:26:3416
260209913227,60cyclictest0-21swapper/2311:59:1616
260209913227,60cyclictest0-21swapper/2311:59:1616
260209913131,72cyclictest0-21swapper/2307:35:1516
260209913127,68cyclictest0-21swapper/2310:10:1316
260209913126,64cyclictest0-21swapper/2311:08:2916
259259913130,100cyclictest151rcu_preempt10:31:1030
259259913130,100cyclictest151rcu_preempt10:31:0930
259089913156,74cyclictest0-21swapper/610:35:2028
25908991310,74cyclictest0-21swapper/611:04:1128
25908991310,74cyclictest0-21swapper/611:04:1128
260459913023,71cyclictest0-21swapper/2708:15:2420
260209913042,62cyclictest0-21swapper/2310:46:0316
260209913028,70cyclictest0-21swapper/2310:15:5016
260209913028,67cyclictest0-21swapper/2307:45:2416
260209913027,63cyclictest0-21swapper/2308:51:4016
259089913026,69cyclictest0-21swapper/610:49:2928
260459912933,50cyclictest0-21swapper/2712:10:2320
260209912928,66cyclictest0-21swapper/2310:05:2616
25977991290,87cyclictest112-21ksoftirqd/1611:25:298
25977991290,87cyclictest112-21ksoftirqd/1611:25:298
259089912948,69cyclictest0-21swapper/611:18:5328
259089912948,69cyclictest0-21swapper/611:18:5328
259089912926,69cyclictest0-21swapper/610:20:0628
260209912830,69cyclictest0-21swapper/2308:02:2316
260209912827,65cyclictest0-21swapper/2309:41:5216
259729912817,69cyclictest0-21swapper/1510:16:307
259259912824,73cyclictest0-21swapper/808:05:1330
259089912829,69cyclictest0-21swapper/610:44:4228
259089912829,69cyclictest0-21swapper/610:44:4128
259089912828,68cyclictest0-21swapper/611:33:1928
259089912828,68cyclictest0-21swapper/611:33:1828
259089912828,67cyclictest0-21swapper/610:02:2728
259089912828,67cyclictest0-21swapper/608:03:4928
259089912828,66cyclictest0-21swapper/611:28:4128
259089912828,66cyclictest0-21swapper/611:28:4128
259089912827,69cyclictest0-21swapper/611:49:0528
259089912827,69cyclictest0-21swapper/611:49:0528
259089912827,68cyclictest0-21swapper/609:58:1228
259089912827,62cyclictest0-21swapper/607:50:0728
25908991280,82cyclictest0-21swapper/610:50:0328
260209912729,71cyclictest0-21swapper/2311:25:3616
260209912729,71cyclictest0-21swapper/2311:25:3616
260209912724,60cyclictest0-21swapper/2311:50:1116
260209912724,60cyclictest0-21swapper/2311:50:1016
260089912718,73cyclictest0-21swapper/2111:45:5314
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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