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2026-04-16 - 17:51
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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 Thu Apr 16, 2026 12:49:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2183999320122,1cyclictest151rcu_preempt10:27:238
2183999320122,1cyclictest151rcu_preempt10:27:238
218999922011,159cyclictest0-21swapper/2907:50:1222
3273912020,194ptp4l0-21swapper/107:06:241
330891193185,6phc2sys0-21swapper/207:05:1612
218889918019,141cyclictest0-21swapper/2611:29:4819
218889917818,138cyclictest0-21swapper/2609:26:5219
217689917524,114cyclictest0-21swapper/610:48:5128
217689917524,114cyclictest0-21swapper/610:48:5128
217529917550,124cyclictest0-21swapper/412:05:2026
218999917311,161cyclictest0-21swapper/2912:36:4022
218999917311,126cyclictest0-21swapper/2910:20:2222
218999917311,126cyclictest0-21swapper/2910:20:2222
218889917319,153cyclictest0-21swapper/2611:45:2319
218999917211,117cyclictest0-21swapper/2912:09:2422
218499916918,119cyclictest0-21swapper/1712:29:049
217689916924,86cyclictest0-21swapper/612:31:1228
217689916724,98cyclictest0-21swapper/608:55:1928
217689916324,84cyclictest0-21swapper/611:39:5428
218889916219,91cyclictest0-21swapper/2610:35:1719
218889916219,91cyclictest0-21swapper/2610:35:1719
217689916124,82cyclictest0-21swapper/611:57:4828
217529916036,84cyclictest0-21swapper/410:03:4726
217689915823,98cyclictest52-21ksoftirqd/609:23:5228
218949915611,99cyclictest0-21swapper/2808:00:4021
217689915324,87cyclictest0-21swapper/608:25:1528
218999915211,88cyclictest0-21swapper/2910:28:2322
218999915211,88cyclictest0-21swapper/2910:28:2322
218499915218,85cyclictest0-21swapper/1709:55:239
217689915223,89cyclictest0-21swapper/610:40:0128
217689915223,89cyclictest0-21swapper/610:40:0128
217529915228,80cyclictest0-21swapper/411:20:5726
217529915228,80cyclictest0-21swapper/411:20:5726
21888991490,86cyclictest0-21swapper/2612:05:3719
218499914918,96cyclictest0-21swapper/1710:25:239
218499914918,96cyclictest0-21swapper/1710:25:239
218889914817,106cyclictest0-21swapper/2610:50:4619
218889914817,106cyclictest0-21swapper/2610:50:4619
218499914818,88cyclictest0-21swapper/1711:55:199
217819914745,48cyclictest0-21swapper/810:45:4230
217819914745,48cyclictest0-21swapper/810:45:4230
218949914655,88cyclictest185-21ksoftirqd/2811:59:3421
217689914424,78cyclictest0-21swapper/611:43:5428
21752991440,85cyclictest0-21swapper/409:21:2826
218999914311,102cyclictest0-21swapper/2909:08:1322
217529914318,97cyclictest0-21swapper/409:46:5126
218499914217,96cyclictest0-21swapper/1709:50:339
218499914119,102cyclictest0-21swapper/1711:50:209
218499914119,102cyclictest0-21swapper/1711:50:209
218999914011,80cyclictest0-21swapper/2910:34:4822
218999914011,80cyclictest0-21swapper/2910:34:4822
217819913929,70cyclictest0-21swapper/810:06:1530
217529913931,78cyclictest0-21swapper/410:37:5526
217529913931,78cyclictest0-21swapper/410:37:5526
218889913818,89cyclictest0-21swapper/2609:48:4619
218499913718,78cyclictest0-21swapper/1711:23:149
218499913718,78cyclictest0-21swapper/1711:23:149
21909991360,83cyclictest0-21swapper/3109:57:5725
217529913652,60cyclictest0-21swapper/409:04:2426
218949913529,63cyclictest0-21swapper/2809:22:2421
218949913529,62cyclictest0-21swapper/2808:10:1721
217529913551,56cyclictest0-21swapper/410:53:2526
217529913551,56cyclictest0-21swapper/410:53:2526
218499913418,73cyclictest0-21swapper/1711:44:379
217529913428,73cyclictest0-21swapper/410:13:1726
218999913311,70cyclictest0-21swapper/2911:52:1822
218999913311,70cyclictest0-21swapper/2911:52:1722
217529913328,69cyclictest0-21swapper/408:00:1626
217529913327,69cyclictest0-21swapper/411:10:0126
217529913327,69cyclictest0-21swapper/411:10:0126
218889913270,47cyclictest0-21swapper/2611:22:1919
218889913270,47cyclictest0-21swapper/2611:22:1919
218669913250,59cyclictest0-21swapper/2109:30:0014
218669913249,55cyclictest0-21swapper/2110:14:5314
217529913235,76cyclictest40-21ksoftirqd/409:10:1626
217529913229,73cyclictest0-21swapper/407:10:0226
217529913229,68cyclictest0-21swapper/407:20:1226
218999913111,90cyclictest0-21swapper/2910:05:5622
218669913149,54cyclictest0-21swapper/2109:33:1214
218669913147,53cyclictest0-21swapper/2110:39:2914
218669913147,53cyclictest0-21swapper/2110:39:2814
218669913146,52cyclictest0-21swapper/2110:43:1314
218669913146,52cyclictest0-21swapper/2110:43:1314
217529913146,54cyclictest0-21swapper/410:55:1826
217529913146,54cyclictest0-21swapper/410:55:1826
217529913131,76cyclictest0-21swapper/410:48:2326
217529913131,76cyclictest0-21swapper/410:48:2326
217529913130,77cyclictest0-21swapper/411:44:2726
217529913130,72cyclictest0-21swapper/409:39:3226
217529913128,68cyclictest0-21swapper/409:32:4126
217529913128,68cyclictest0-21swapper/408:30:2626
217529913127,74cyclictest0-21swapper/409:57:3426
218889913049,54cyclictest0-21swapper/2611:43:4219
218889913026,64cyclictest0-21swapper/2608:19:3319
218669913045,56cyclictest0-21swapper/2112:04:4414
217529913028,72cyclictest0-21swapper/409:25:1526
217529913028,67cyclictest0-21swapper/412:30:1226
217529913028,67cyclictest0-21swapper/411:32:5926
217529913028,64cyclictest0-21swapper/412:20:0226
217529913027,69cyclictest0-21swapper/411:52:1226
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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