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2026-04-10 - 06:29
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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 Fri Apr 10, 2026 00:49:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912580,250ptp4l0-21swapper/119:09:001
237259921439,3cyclictest151rcu_preempt22:34:5823
237259921439,3cyclictest151rcu_preempt22:34:5723
224102210203,6sleep70-21swapper/719:09:1629
237669918018,109cyclictest0-21swapper/1220:20:174
238259916330,106cyclictest0-21swapper/2721:35:1420
238259916330,106cyclictest0-21swapper/2721:35:1320
23793991582,105cyclictest0-21swapper/1922:47:4611
23793991552,116cyclictest0-21swapper/1921:48:2611
23793991552,116cyclictest0-21swapper/1921:48:2611
238259915319,104cyclictest0-21swapper/2723:14:0720
238259915232,63cyclictest0-21swapper/2722:45:1420
237099915138,111cyclictest0-21swapper/022:55:170
237099914816,130cyclictest0-21swapper/022:00:160
237099914816,130cyclictest0-21swapper/022:00:160
23709991472,89cyclictest0-21swapper/022:27:280
23709991472,89cyclictest0-21swapper/022:27:280
23793991462,93cyclictest0-21swapper/1921:14:4611
237869914594,31cyclictest12423-21diskmemload23:26:319
237099914524,96cyclictest0-21swapper/023:28:140
238259914417,99cyclictest0-21swapper/2723:17:3920
23793991442,102cyclictest0-21swapper/1921:38:5011
23793991442,102cyclictest0-21swapper/1921:38:4911
238339914332,54cyclictest0-21swapper/2920:40:1222
2373499143141,2cyclictest151rcu_preempt23:44:1327
23709991432,85cyclictest0-21swapper/023:30:020
237909914129,69cyclictest0-21swapper/1822:18:2110
237909914129,69cyclictest0-21swapper/1822:18:2110
221632141133,6sleep50-21swapper/519:05:3027
237909914032,69cyclictest0-21swapper/1823:12:5210
237909914031,70cyclictest0-21swapper/1822:29:3510
237909914031,70cyclictest0-21swapper/1822:29:3510
237909914031,67cyclictest0-21swapper/1821:21:4310
237909914031,67cyclictest0-21swapper/1821:21:4310
237909914030,68cyclictest0-21swapper/1822:49:2210
237909914030,64cyclictest0-21swapper/1823:50:2110
237909913931,69cyclictest0-21swapper/1820:18:3910
237099913925,83cyclictest16889-21taskset19:29:590
237909913857,62cyclictest0-21swapper/1822:34:2410
237909913857,62cyclictest0-21swapper/1822:34:2410
237909913829,64cyclictest0-21swapper/1820:32:0010
237909913829,63cyclictest0-21swapper/1823:07:0010
237869913854,56cyclictest0-21swapper/1721:27:539
237869913854,56cyclictest0-21swapper/1721:27:539
237349913822,45cyclictest0-21swapper/523:30:5027
237349913817,117cyclictest0-21swapper/523:53:2927
238259913743,54cyclictest0-21swapper/2723:05:0020
238259913730,72cyclictest0-21swapper/2722:24:2220
238259913730,72cyclictest0-21swapper/2722:24:2120
23816991370,85cyclictest0-21swapper/2523:29:0218
23816991370,85cyclictest0-21swapper/2522:31:1918
23816991370,85cyclictest0-21swapper/2522:31:1918
237909913731,67cyclictest0-21swapper/1820:04:1310
237909913730,63cyclictest0-21swapper/1821:32:2410
237909913730,63cyclictest0-21swapper/1821:32:2310
237909913728,65cyclictest0-21swapper/1821:59:0810
237909913728,65cyclictest0-21swapper/1821:59:0810
23833991360,87cyclictest0-21swapper/2922:18:3322
23833991360,87cyclictest0-21swapper/2922:18:3322
23816991360,82cyclictest0-21swapper/2500:11:1518
23816991360,80cyclictest0-21swapper/2522:45:1218
237909913642,65cyclictest0-21swapper/1822:10:2010
237909913642,65cyclictest0-21swapper/1822:10:2010
237349913623,73cyclictest0-21swapper/522:20:5027
237349913623,73cyclictest0-21swapper/522:20:4927
237349913622,77cyclictest0-21swapper/522:32:3527
237349913622,77cyclictest0-21swapper/522:32:3427
237349913622,72cyclictest0-21swapper/523:26:3327
237349913621,101cyclictest0-21swapper/523:14:1727
237099913638,87cyclictest0-21swapper/023:41:140
238339913531,59cyclictest0-21swapper/2921:30:2722
238339913531,59cyclictest0-21swapper/2921:30:2622
23833991350,87cyclictest0-21swapper/2922:12:0822
23833991350,87cyclictest0-21swapper/2922:12:0722
238259913526,65cyclictest0-21swapper/2700:10:4520
237909913531,68cyclictest0-21swapper/1819:48:4410
237909913530,65cyclictest0-21swapper/1821:36:4110
237909913530,65cyclictest0-21swapper/1821:36:4110
237869913526,82cyclictest0-21swapper/1721:50:019
237869913526,82cyclictest0-21swapper/1721:50:009
237349913520,90cyclictest0-21swapper/522:18:0927
237349913520,90cyclictest0-21swapper/522:18:0827
238339913430,59cyclictest0-21swapper/2919:42:1622
238259913431,70cyclictest0-21swapper/2722:18:3120
238259913431,70cyclictest0-21swapper/2722:18:3120
238259913429,68cyclictest0-21swapper/2720:25:1820
238259913427,65cyclictest0-21swapper/2719:40:1920
237909913432,71cyclictest0-21swapper/1820:54:2610
237909913430,65cyclictest0-21swapper/1820:45:2210
237909913429,62cyclictest0-21swapper/1823:27:1810
23790991340,78cyclictest0-21swapper/1822:44:0210
23790991340,78cyclictest0-21swapper/1822:44:0210
237869913449,61cyclictest0-21swapper/1700:04:109
237349913421,77cyclictest0-21swapper/500:08:1627
238259913344,54cyclictest0-21swapper/2722:26:0020
238259913344,54cyclictest0-21swapper/2722:25:5920
238259913340,64cyclictest0-21swapper/2722:44:1120
238259913340,64cyclictest0-21swapper/2722:44:1020
238259913325,66cyclictest0-21swapper/2700:05:2520
237909913328,61cyclictest0-21swapper/1819:50:1910
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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