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2026-03-26 - 05:41
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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 Mar 26, 2026 00:48:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913190,311ptp4l0-21swapper/119:06:331
5769929294,1cyclictest151rcu_preempt00:38:4627
625991953,190cyclictest151rcu_preempt21:29:459
625991953,190cyclictest151rcu_preempt21:29:459
6729918122,141cyclictest0-21swapper/2922:25:2022
62599176175,1cyclictest151rcu_preempt21:31:229
62599176175,1cyclictest151rcu_preempt21:31:229
6579917225,83cyclictest0-21swapper/2522:02:3018
6579917225,83cyclictest0-21swapper/2522:02:3018
676991715,118cyclictest0-21swapper/3000:08:1124
6729917022,92cyclictest0-21swapper/2921:55:2322
6729917022,92cyclictest0-21swapper/2921:55:2322
6259917024,142cyclictest0-21swapper/1721:19:059
6259917024,142cyclictest0-21swapper/1721:19:059
6729916822,91cyclictest0-21swapper/2922:38:0922
6259916830,88cyclictest0-21swapper/1723:29:299
6259916728,91cyclictest0-21swapper/1721:45:489
6259916728,91cyclictest0-21swapper/1721:45:489
6729916622,88cyclictest0-21swapper/2922:17:3222
330891165157,6phc2sys0-21swapper/219:06:4012
676991595,124cyclictest0-21swapper/3022:22:2224
6729915522,83cyclictest0-21swapper/2921:46:0022
6729915522,83cyclictest0-21swapper/2921:46:0022
659991500,86cyclictest0-21swapper/2621:47:0119
659991500,86cyclictest0-21swapper/2621:47:0119
299552148138,7sleep200-21swapper/2019:05:1813
659991470,86cyclictest0-21swapper/2621:35:1619
659991470,86cyclictest0-21swapper/2621:35:1619
672991460,88cyclictest0-21swapper/2921:14:2822
5529914649,55cyclictest0-21swapper/022:00:170
5529914649,55cyclictest0-21swapper/022:00:170
6729914420,95cyclictest0-21swapper/2900:24:2922
588991430,84cyclictest0-21swapper/819:10:1730
659991420,83cyclictest0-21swapper/2600:16:4119
659991410,86cyclictest0-21swapper/2623:02:3919
676991405,81cyclictest0-21swapper/3000:22:3624
659991400,83cyclictest0-21swapper/2600:20:2419
659991400,79cyclictest0-21swapper/2621:05:2019
659991400,79cyclictest0-21swapper/2621:05:2019
5529913953,61cyclictest0-21swapper/020:05:230
552991381,94cyclictest6690-21timerandwakeup19:10:230
6599913741,57cyclictest0-21swapper/2623:14:4019
6599913738,60cyclictest0-21swapper/2620:40:1319
5529913730,67cyclictest0-21swapper/020:50:160
5529913720,71cyclictest0-21swapper/022:35:110
6599913622,72cyclictest0-21swapper/2623:22:0919
5529913631,66cyclictest0-21swapper/020:34:150
5529913630,64cyclictest0-21swapper/020:40:040
5529913629,67cyclictest0-21swapper/022:30:100
552991360,81cyclictest0-21swapper/020:02:110
571991350,84cyclictest0-21swapper/421:30:1526
571991350,84cyclictest0-21swapper/421:30:1526
5529913527,67cyclictest0-21swapper/022:42:040
6599913417,74cyclictest0-21swapper/2622:49:0019
659991340,78cyclictest0-21swapper/2620:20:2719
6599913331,69cyclictest0-21swapper/2623:30:1019
6599913330,67cyclictest0-21swapper/2622:40:2819
6769913244,60cyclictest0-21swapper/3020:03:5724
6729913247,59cyclictest0-21swapper/2923:28:0522
6729913222,73cyclictest0-21swapper/2921:44:4322
6729913222,73cyclictest0-21swapper/2921:44:4222
6729913215,92cyclictest0-21swapper/2920:31:4322
6599913229,71cyclictest0-21swapper/2623:56:2219
6599913227,71cyclictest0-21swapper/2619:45:1119
659991320,78cyclictest0-21swapper/2622:06:4819
659991320,78cyclictest0-21swapper/2622:06:4819
5889913219,113cyclictest0-21swapper/823:25:2430
6769913152,55cyclictest0-21swapper/3021:20:5424
6769913152,55cyclictest0-21swapper/3021:20:5424
6599913130,67cyclictest0-21swapper/2600:30:0219
6599913127,65cyclictest0-21swapper/2622:18:0119
659991310,78cyclictest0-21swapper/2623:45:0819
659991310,78cyclictest0-21swapper/2619:30:1319
659991310,77cyclictest0-21swapper/2620:50:2219
5809913128,62cyclictest0-21swapper/621:54:1028
5809913128,62cyclictest0-21swapper/621:54:1028
6729913037,62cyclictest0-21swapper/2900:19:5622
659991300,77cyclictest0-21swapper/2622:30:1919
659991300,76cyclictest0-21swapper/2623:16:1719
6259913040,62cyclictest0-21swapper/1723:23:379
5809913050,60cyclictest0-21swapper/622:53:3028
6769912943,57cyclictest0-21swapper/3023:09:5624
6729912955,61cyclictest0-21swapper/2923:19:0022
6729912945,61cyclictest0-21swapper/2900:14:3522
6729912938,61cyclictest0-21swapper/2900:27:2622
6729912928,66cyclictest0-21swapper/2921:15:1722
6729912928,66cyclictest0-21swapper/2921:15:1722
6729912927,68cyclictest0-21swapper/2922:14:0722
6729912927,68cyclictest0-21swapper/2922:14:0722
6729912921,18cyclictest0-21swapper/2923:08:3822
6599912927,67cyclictest0-21swapper/2623:05:3519
659991290,69cyclictest0-21swapper/2600:10:1619
634991294,124cyclictest0-21swapper/1922:20:0311
634991293,125cyclictest0-21swapper/1923:50:2211
634991293,125cyclictest0-21swapper/1923:35:2411
634991293,125cyclictest0-21swapper/1922:00:1611
634991293,125cyclictest0-21swapper/1922:00:1611
5809912957,57cyclictest0-21swapper/621:24:1428
5809912957,57cyclictest0-21swapper/621:24:1428
5809912928,67cyclictest0-21swapper/622:05:2428
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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