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2026-07-22 - 10:04
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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
Characteristics of the 100 highest latencies:
System rackdslot1.osadl.org (updated Wed Jul 22, 2026 00:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3125999775,70cyclictest0-21swapper/321:50:193
3125999756,6cyclictest137891phc2sys23:01:403
3125999746,40cyclictest0-21swapper/319:30:233
31258997412,60cyclictest0-21swapper/200:05:292
3125899684,62cyclictest0-21swapper/223:25:292
31259996713,18cyclictest18710-21taskset00:27:453
31259996613,11cyclictest20822-21taskset23:24:503
31259996612,19cyclictest8294-21taskset21:49:473
31259996514,16cyclictest14530-21taskset00:20:103
31259996513,12cyclictest21964-21taskset21:07:153
31259996513,11cyclictest23056-21taskset23:29:033
31259996513,11cyclictest17963-21taskset23:15:433
3125899654,59cyclictest0-21swapper/200:15:292
3125899654,59cyclictest0-21swapper/200:15:292
3125899653,60cyclictest0-21swapper/219:35:282
3125899652,61cyclictest0-21swapper/200:30:302
31259996413,12cyclictest4823-21taskset23:59:283
31259996413,12cyclictest29231-21taskset22:34:563
31259996413,11cyclictest12781-21taskset21:58:263
31259996314,11cyclictest1166-21seq21:33:413
31259996312,10cyclictest10519-21taskset20:43:003
31258996231,4cyclictest33-21ksoftirqd/221:10:272
31259996111,11cyclictest19159-21taskset19:51:143
132342610,4sleep20-21swapper/222:00:132
3125999608,15cyclictest13206-21missed_timers00:15:223
3125999608,15cyclictest13206-21missed_timers00:15:223
31259996012,46cyclictest0-21swapper/300:37:293
134491600,4ptp4l0-21swapper/020:32:040
3125999599,12cyclictest13004-21grep23:05:263
31259995914,43cyclictest0-21swapper/319:36:093
31259995913,10cyclictest12648-21taskset20:45:563
31258995930,8cyclictest33-21ksoftirqd/223:25:002
134491590,4ptp4l0-21swapper/222:15:142
134491580,4ptp4l0-21swapper/320:17:133
134491580,4ptp4l0-21swapper/222:51:062
31259995711,10cyclictest17433-21runrttasks22:08:553
134491570,4ptp4l0-21swapper/319:12:353
134491570,4ptp4l0-21swapper/300:32:373
134491570,3ptp4l0-21swapper/219:50:042
134491570,2ptp4l0-21swapper/000:29:470
31259995612,11cyclictest14508-21runrttasks19:40:313
134491560,4ptp4l0-21swapper/119:08:441
3125999559,43cyclictest0-21swapper/323:30:273
31259995514,10cyclictest17116-21seq19:49:263
31259995512,17cyclictest8250-21taskset20:38:373
134491550,3ptp4l0-21swapper/220:06:482
31259995414,10cyclictest3614-21seq21:38:543
31259995413,10cyclictest30000-21runrttasks23:41:453
3125899544,8cyclictest33-21ksoftirqd/220:20:122
3125899540,8cyclictest33-21ksoftirqd/219:35:002
312152540,3sleep30-21swapper/322:35:303
3125799533,48cyclictest0-21swapper/122:35:191
134491530,4ptp4l0-21swapper/020:14:190
31259995214,10cyclictest23884-21runrttasks20:02:383
31259995211,10cyclictest19677-21runrttasks22:13:163
3125899526,8cyclictest33-21ksoftirqd/220:35:202
3125899525,8cyclictest33-21ksoftirqd/222:30:012
3125899522,6cyclictest33-21ksoftirqd/222:50:002
3125899521,10cyclictest0-21swapper/222:24:562
3125899520,14cyclictest33-21ksoftirqd/200:10:152
134491520,4ptp4l0-21swapper/200:28:592
134491520,3ptp4l0-21swapper/022:53:510
31259995113,11cyclictest15105-21seq20:52:573
31259995112,10cyclictest6734-21chrt22:54:113
31259995110,10cyclictest17518-21runrttasks20:59:263
3125899512,6cyclictest0-21swapper/223:50:212
3125899510,49cyclictest0-21swapper/223:10:282
3125899510,13cyclictest33-21ksoftirqd/219:19:552
3125899510,12cyclictest33-21ksoftirqd/220:59:592
134491510,4ptp4l0-21swapper/222:40:212
134491510,4ptp4l0-21swapper/220:04:322
3125999503,9cyclictest0-21swapper/300:05:193
31259995011,12cyclictest22369-21taskset22:20:093
31259995011,11cyclictest15042-21chrt22:02:403
3125899503,6cyclictest33-21ksoftirqd/219:15:002
3125899502,6cyclictest33-21ksoftirqd/223:55:192
3125899502,6cyclictest33-21ksoftirqd/221:15:162
3125899502,6cyclictest0-21swapper/220:15:252
3125899502,38cyclictest0-21swapper/223:00:222
134491500,5ptp4l0-21swapper/319:09:583
31259994914,15cyclictest3293-21sed20:25:313
31259994911,10cyclictest25659-21ntp_states20:05:233
3125899492,6cyclictest0-21swapper/221:25:162
3125899490,6cyclictest33-21ksoftirqd/223:45:272
3125899490,6cyclictest33-21ksoftirqd/223:45:272
3125899490,6cyclictest27907-21grep21:20:212
3125899482,6cyclictest0-21swapper/200:20:202
3125899482,32cyclictest0-21swapper/219:55:172
3125899480,6cyclictest33-21ksoftirqd/220:50:282
3125899480,5cyclictest33-21ksoftirqd/219:24:592
3125999479,9cyclictest5721-21taskset21:41:183
3125999474,9cyclictest0-21swapper/319:15:343
3125999474,6cyclictest134491ptp4l21:10:253
3125999472,12cyclictest18718-21wc21:00:203
3125899474,9cyclictest33-21ksoftirqd/223:30:162
3125899472,8cyclictest33-21ksoftirqd/220:25:252
3125899472,5cyclictest0-21swapper/222:55:202
3125899472,5cyclictest0-21swapper/222:25:232
3125899470,7cyclictest15911-21irqrtprio19:45:202
134491470,5ptp4l3125999cyclictest21:16:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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