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2026-08-17 - 04:02
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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 Mon Aug 17, 2026 00:48:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912990,291ptp4l0-21swapper/119:05:321
3273912990,291ptp4l0-21swapper/119:05:321
27719925558,1cyclictest151rcu_preempt21:39:0522
2669991800,148cyclictest0-21swapper/1622:40:108
26399917920,156cyclictest0-21swapper/1120:45:213
26399916720,121cyclictest0-21swapper/1120:40:003
26399916620,98cyclictest0-21swapper/1100:30:213
26399916620,98cyclictest0-21swapper/1100:30:213
26399915620,88cyclictest0-21swapper/1123:35:503
26399915620,88cyclictest0-21swapper/1123:35:503
27399915526,34cyclictest0-21swapper/2621:17:0619
27399915429,125cyclictest0-21swapper/2620:21:5519
26399915420,133cyclictest0-21swapper/1121:15:163
273999153152,0cyclictest173-21ksoftirqd/2621:20:2019
322492150142,6sleep220-21swapper/2219:05:2215
322492150142,6sleep220-21swapper/2219:05:2115
2688991500,90cyclictest0-21swapper/1923:50:2411
27399914828,65cyclictest0-21swapper/2621:31:3319
26399914820,89cyclictest0-21swapper/1121:30:143
2722991471,88cyclictest0-21swapper/2421:35:1817
26279914723,102cyclictest0-21swapper/921:12:0231
2669991461,89cyclictest0-21swapper/1620:51:368
26109914659,76cyclictest0-21swapper/620:10:0028
2627991450,87cyclictest0-21swapper/921:58:3931
2722991440,85cyclictest0-21swapper/2419:45:3117
2722991430,84cyclictest0-21swapper/2423:50:1717
26279914329,39cyclictest0-21swapper/921:30:2831
2722991421,82cyclictest0-21swapper/2420:10:2217
2722991420,84cyclictest0-21swapper/2423:02:5717
2669991420,88cyclictest0-21swapper/1621:51:318
2669991420,80cyclictest0-21swapper/1620:26:018
26109914249,69cyclictest0-21swapper/622:12:5628
2722991410,85cyclictest0-21swapper/2400:25:0217
2722991410,85cyclictest0-21swapper/2400:25:0217
27229914055,63cyclictest0-21swapper/2422:57:2617
26889914027,68cyclictest0-21swapper/1922:17:2211
26699914024,115cyclictest0-21swapper/1623:54:318
26699914021,70cyclictest0-21swapper/1600:14:168
26699914021,70cyclictest0-21swapper/1600:14:158
2669991400,87cyclictest0-21swapper/1622:10:248
26279914048,62cyclictest0-21swapper/920:35:1031
27229913954,58cyclictest0-21swapper/2419:50:1917
2722991390,81cyclictest0-21swapper/2400:19:0917
2722991390,81cyclictest0-21swapper/2400:19:0917
26699913928,68cyclictest0-21swapper/1619:20:178
26699913927,67cyclictest0-21swapper/1622:06:068
26699913926,73cyclictest0-21swapper/1621:37:458
26699913923,71cyclictest0-21swapper/1600:16:278
26699913923,71cyclictest0-21swapper/1600:16:278
26279913937,69cyclictest0-21swapper/922:49:3731
2722991380,86cyclictest0-21swapper/2420:20:1517
26699913840,60cyclictest0-21swapper/1623:06:178
26699913821,71cyclictest0-21swapper/1600:04:438
26279913852,58cyclictest0-21swapper/922:38:3731
2722991370,81cyclictest0-21swapper/2421:50:0317
26699913728,68cyclictest0-21swapper/1619:56:378
26699913728,67cyclictest0-21swapper/1622:03:258
26699913727,73cyclictest0-21swapper/1621:30:078
26699913726,68cyclictest0-21swapper/1623:26:398
26699913726,67cyclictest0-21swapper/1620:40:058
26699913726,66cyclictest0-21swapper/1619:30:558
2669991370,84cyclictest0-21swapper/1622:35:248
2669991370,83cyclictest0-21swapper/1620:00:248
2739991360,83cyclictest0-21swapper/2622:21:4819
27229913655,62cyclictest0-21swapper/2421:41:4417
2722991360,81cyclictest0-21swapper/2421:15:0117
26699913630,66cyclictest0-21swapper/1623:15:258
26699913630,66cyclictest0-21swapper/1623:15:258
26699913628,72cyclictest0-21swapper/1619:55:008
26699913628,70cyclictest0-21swapper/1622:20:238
2669991360,81cyclictest0-21swapper/1622:30:018
26279913641,65cyclictest0-21swapper/923:46:1431
26279913631,70cyclictest0-21swapper/922:23:0731
26279913628,68cyclictest0-21swapper/923:53:3431
26279913627,65cyclictest0-21swapper/921:27:0031
27399913521,30cyclictest0-21swapper/2621:54:0019
27229913549,65cyclictest0-21swapper/2420:05:1717
27229913528,67cyclictest0-21swapper/2421:33:1117
2722991350,83cyclictest0-21swapper/2422:40:1517
26699913555,62cyclictest0-21swapper/1623:55:038
26699913549,54cyclictest0-21swapper/1621:47:208
26699913530,71cyclictest0-21swapper/1600:32:028
26699913530,71cyclictest0-21swapper/1600:32:028
26699913528,69cyclictest0-21swapper/1621:55:188
26699913522,75cyclictest0-21swapper/1622:47:028
26279913530,72cyclictest0-21swapper/922:00:0831
26279913529,69cyclictest0-21swapper/919:35:2031
2722991340,83cyclictest0-21swapper/2423:30:0217
2722991340,82cyclictest0-21swapper/2423:21:2417
2722991340,79cyclictest0-21swapper/2423:40:1117
26699913432,77cyclictest0-21swapper/1600:25:268
26699913432,77cyclictest0-21swapper/1600:25:268
26699913429,70cyclictest0-21swapper/1623:48:418
26699913428,69cyclictest0-21swapper/1622:30:028
26699913427,73cyclictest0-21swapper/1620:30:168
26699913427,72cyclictest0-21swapper/1619:45:238
26699913427,70cyclictest0-21swapper/1622:50:028
26279913452,60cyclictest0-21swapper/920:33:4031
26279913451,66cyclictest0-21swapper/921:40:5431
26279913448,64cyclictest0-21swapper/922:11:2231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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