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2025-12-07 - 12:55
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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 Sun Dec 07, 2025 00:49:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2482913320,324ptp4l0-21swapper/119:08:021
2051299304106,1cyclictest151rcu_preempt21:29:0727
205239927981,1cyclictest151rcu_preempt00:31:3030
178082179172,6sleep180-21swapper/1819:05:2110
329891164156,6phc2sys0-21swapper/219:05:1912
145232164155,7sleep90-21swapper/919:05:1231
206419916211,116cyclictest151rcu_preempt00:33:4419
206749916025,110cyclictest0-21swapper/3023:13:4424
162232147137,7sleep140-21swapper/1419:05:186
206819914425,118cyclictest0-21swapper/3121:59:2925
205399914435,83cyclictest151rcu_preempt23:03:064
206819914224,86cyclictest0-21swapper/3100:12:3225
20674991420,83cyclictest0-21swapper/3023:44:4524
206189914212,107cyclictest0-21swapper/2321:11:4016
206189914122,87cyclictest0-21swapper/2321:50:4116
20539991403,103cyclictest0-21swapper/1200:23:334
20539991400,85cyclictest0-21swapper/1222:20:354
206819913926,112cyclictest0-21swapper/3122:50:1625
206749913921,86cyclictest0-21swapper/3022:17:3824
20674991390,85cyclictest0-21swapper/3020:36:0624
20674991390,85cyclictest0-21swapper/3020:36:0624
206749913655,80cyclictest0-21swapper/3022:52:2424
206749913456,53cyclictest0-21swapper/3023:00:2424
20499991340,81cyclictest0-21swapper/222:37:3012
206659913320,67cyclictest0-21swapper/2900:12:1722
20665991330,82cyclictest0-21swapper/2922:51:5022
206749913228,64cyclictest0-21swapper/3022:22:5924
20499991321,93cyclictest0-21swapper/219:43:1712
20499991321,93cyclictest0-21swapper/219:43:1612
20499991320,87cyclictest0-21swapper/221:34:4012
206749913148,61cyclictest0-21swapper/3000:19:2924
206749913127,78cyclictest197-21ksoftirqd/3019:28:4724
206749913127,78cyclictest197-21ksoftirqd/3019:28:4724
206659913150,56cyclictest0-21swapper/2923:40:1422
206189913112,108cyclictest0-21swapper/2322:00:2516
206749913075,55cyclictest0-21swapper/3020:15:1724
206749913075,55cyclictest0-21swapper/3020:15:1624
206749913031,72cyclictest0-21swapper/3022:32:5224
206749913029,66cyclictest0-21swapper/3019:20:1424
206749913028,67cyclictest0-21swapper/3023:15:5324
206659913050,52cyclictest0-21swapper/2921:56:4722
20641991300,82cyclictest0-21swapper/2621:20:5519
206749912951,55cyclictest0-21swapper/3021:20:5924
206749912943,55cyclictest0-21swapper/3000:07:1224
206749912932,69cyclictest0-21swapper/3022:25:0724
206749912928,67cyclictest0-21swapper/3021:41:1824
206659912938,60cyclictest0-21swapper/2921:38:5622
20641991291,69cyclictest0-21swapper/2621:05:2519
206749912829,70cyclictest0-21swapper/3022:36:2124
206749912828,63cyclictest0-21swapper/3022:48:3824
206749912827,66cyclictest0-21swapper/3021:15:3824
206749912826,67cyclictest0-21swapper/3023:26:0424
206749912826,67cyclictest0-21swapper/3021:45:0224
206749912816,75cyclictest0-21swapper/3023:30:5124
206659912845,57cyclictest0-21swapper/2923:15:5222
206499912831,72cyclictest0-21swapper/2722:35:1520
206499912830,85cyclictest0-21swapper/2700:02:5220
206749912743,68cyclictest0-21swapper/3000:39:1624
206749912730,70cyclictest0-21swapper/3023:49:3524
206749912729,71cyclictest0-21swapper/3022:06:2624
206749912729,67cyclictest0-21swapper/3023:51:4224
206749912729,65cyclictest0-21swapper/3019:33:3624
206749912729,65cyclictest0-21swapper/3019:33:3624
206749912724,64cyclictest0-21swapper/3021:50:2224
206659912743,54cyclictest0-21swapper/2919:40:0222
206659912743,54cyclictest0-21swapper/2919:40:0222
206659912741,56cyclictest0-21swapper/2923:34:3522
20665991270,75cyclictest0-21swapper/2921:52:3122
206189912714,71cyclictest0-21swapper/2321:25:0216
206749912631,77cyclictest0-21swapper/3021:25:1624
206749912630,74cyclictest0-21swapper/3000:33:2424
206749912629,69cyclictest0-21swapper/3020:22:4524
206749912629,69cyclictest0-21swapper/3020:22:4524
206749912628,72cyclictest0-21swapper/3021:57:2124
206749912628,67cyclictest0-21swapper/3023:35:4024
206749912628,63cyclictest0-21swapper/3020:25:5824
206749912628,63cyclictest0-21swapper/3020:25:5724
206749912627,72cyclictest0-21swapper/3022:04:4924
206749912627,71cyclictest0-21swapper/3021:11:5424
206749912627,68cyclictest0-21swapper/3022:55:3524
206749912624,60cyclictest0-21swapper/3019:35:1324
206749912624,60cyclictest0-21swapper/3019:35:1224
206659912648,61cyclictest0-21swapper/2922:21:2322
206659912644,61cyclictest0-21swapper/2922:28:5222
206659912644,53cyclictest0-21swapper/2923:22:4922
206659912638,63cyclictest0-21swapper/2919:45:5222
206659912638,63cyclictest0-21swapper/2919:45:5222
206659912634,64cyclictest0-21swapper/2919:39:4622
206659912634,64cyclictest0-21swapper/2919:39:4622
206749912529,73cyclictest0-21swapper/3000:20:0224
206749912529,71cyclictest0-21swapper/3019:45:2224
206749912529,71cyclictest0-21swapper/3019:45:2124
206749912528,68cyclictest0-21swapper/3000:13:3724
206749912527,71cyclictest0-21swapper/3023:55:2624
206659912545,53cyclictest0-21swapper/2922:02:5922
206659912544,55cyclictest0-21swapper/2900:15:1222
206659912526,65cyclictest0-21swapper/2923:50:5522
206659912523,62cyclictest0-21swapper/2923:25:4922
206499912526,62cyclictest0-21swapper/2721:46:5720
20499991255,76cyclictest0-21swapper/219:55:3412
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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