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2026-04-16 - 06:06
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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 00:48:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9229928893,1cyclictest151rcu_preempt23:15:233
290372273262,8sleep270-21swapper/2719:05:1820
290372273262,8sleep270-21swapper/2719:05:1720
9289922325,3cyclictest151rcu_preempt21:10:224
3273912200,213ptp4l0-21swapper/119:07:531
3273912200,213ptp4l0-21swapper/119:07:531
9039921118,158cyclictest0-21swapper/822:09:0430
9039920616,157cyclictest0-21swapper/822:15:1430
1051991973,1cyclictest151rcu_preempt21:37:5425
1035991752,152cyclictest0-21swapper/2800:30:1821
1035991752,152cyclictest0-21swapper/2800:30:1821
9039917418,134cyclictest0-21swapper/800:30:1630
9039917418,134cyclictest0-21swapper/800:30:1630
1035991742,145cyclictest0-21swapper/2822:35:2321
9039917318,146cyclictest0-21swapper/823:35:1230
1035991732,136cyclictest0-21swapper/2800:38:1921
1035991732,136cyclictest0-21swapper/2800:38:1821
9039917218,153cyclictest0-21swapper/821:50:1130
9039917118,107cyclictest0-21swapper/820:35:2030
9119916869,47cyclictest0-21swapper/923:06:1631
9039916718,113cyclictest0-21swapper/800:06:4630
1035991662,120cyclictest0-21swapper/2823:55:2021
1035991662,120cyclictest0-21swapper/2823:55:1921
9039916318,87cyclictest0-21swapper/822:41:5930
1035991592,113cyclictest0-21swapper/2823:50:2221
1035991552,151cyclictest0-21swapper/2821:30:1221
9039915213,124cyclictest151rcu_preempt23:12:3730
1035991492,106cyclictest0-21swapper/2821:51:0921
1035991472,109cyclictest0-21swapper/2821:13:3621
1035991471,125cyclictest0-21swapper/2800:30:0121
1035991471,125cyclictest0-21swapper/2800:30:0121
940991461,86cyclictest0-21swapper/1421:48:186
836991440,141cyclictest151rcu_preempt23:00:340
9869914331,110cyclictest0-21swapper/1922:40:1511
940991431,85cyclictest0-21swapper/1421:19:276
9869914230,94cyclictest0-21swapper/1923:35:4011
1035991424,115cyclictest0-21swapper/2823:28:5021
1035991412,94cyclictest0-21swapper/2822:31:5421
9869913928,89cyclictest0-21swapper/1922:12:2411
9409913929,65cyclictest0-21swapper/1400:24:556
9409913929,65cyclictest0-21swapper/1400:24:556
940991391,81cyclictest0-21swapper/1422:54:046
940991391,80cyclictest0-21swapper/1421:10:546
1035991392,105cyclictest0-21swapper/2822:55:2521
9409913828,65cyclictest0-21swapper/1422:07:016
940991381,81cyclictest0-21swapper/1421:59:006
9119913848,56cyclictest0-21swapper/923:26:0331
9119913847,58cyclictest0-21swapper/900:03:2831
9119913828,67cyclictest0-21swapper/923:11:3631
9119913740,66cyclictest0-21swapper/921:46:0631
9119913727,66cyclictest0-21swapper/923:00:2331
9039913717,91cyclictest0-21swapper/821:40:3130
1051991371,80cyclictest0-21swapper/3121:20:1525
940991361,83cyclictest0-21swapper/1421:50:276
940991360,82cyclictest0-21swapper/1421:40:506
9119913652,60cyclictest0-21swapper/923:36:3131
9119913650,61cyclictest0-21swapper/923:55:5831
9119913650,61cyclictest0-21swapper/923:55:5831
9119913646,62cyclictest0-21swapper/923:45:1731
9119913642,61cyclictest0-21swapper/900:12:0131
9119913630,72cyclictest0-21swapper/923:40:2931
9119913630,69cyclictest0-21swapper/921:19:2231
9119913630,67cyclictest0-21swapper/922:40:0231
9039913617,104cyclictest0-21swapper/819:15:1630
9409913545,60cyclictest0-21swapper/1423:23:596
9409913528,67cyclictest0-21swapper/1423:54:266
940991350,80cyclictest0-21swapper/1422:59:246
9119913530,70cyclictest0-21swapper/900:17:5331
9119913530,70cyclictest0-21swapper/900:17:5231
9119913527,66cyclictest0-21swapper/921:26:1931
9119913524,66cyclictest0-21swapper/922:02:4031
9409913429,65cyclictest0-21swapper/1420:53:156
9409913427,65cyclictest0-21swapper/1422:03:496
9119913430,69cyclictest0-21swapper/922:21:5431
9119913430,68cyclictest0-21swapper/900:24:1831
9119913430,68cyclictest0-21swapper/900:24:1731
9119913426,63cyclictest0-21swapper/922:08:0131
9409913329,65cyclictest0-21swapper/1423:07:576
9409913329,64cyclictest0-21swapper/1421:36:016
9409913329,62cyclictest0-21swapper/1400:30:486
9409913329,62cyclictest0-21swapper/1400:30:476
9409913328,60cyclictest0-21swapper/1420:44:106
9119913338,61cyclictest0-21swapper/920:13:3931
9119913330,68cyclictest0-21swapper/922:49:2631
9119913329,68cyclictest0-21swapper/900:39:1631
9119913329,68cyclictest0-21swapper/900:39:1631
9119913329,68cyclictest0-21swapper/900:27:4831
9119913329,68cyclictest0-21swapper/900:27:4731
9119913329,66cyclictest0-21swapper/921:38:3731
9119913327,59cyclictest0-21swapper/919:29:1831
9409913231,58cyclictest0-21swapper/1419:17:366
9409913230,68cyclictest0-21swapper/1400:38:496
9409913230,68cyclictest0-21swapper/1400:38:496
9409913230,66cyclictest0-21swapper/1422:21:276
9409913229,68cyclictest0-21swapper/1400:08:216
9409913228,67cyclictest0-21swapper/1423:15:576
9409913227,62cyclictest0-21swapper/1421:20:306
9409913222,67cyclictest0-21swapper/1423:46:576
9409913219,71cyclictest0-21swapper/1400:25:276
9409913219,71cyclictest0-21swapper/1400:25:276
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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