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2026-04-11 - 12:30
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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 50 highest latencies:
System rack4slot6.osadl.org (updated Sat Apr 11, 2026 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26616521240,120pltrace0-21swapper/319:09:553
23828521240,116pltrace0-21swapper/519:07:445
23828521050,97pltrace0-21swapper/619:05:216
23828521040,96pltrace0-21swapper/119:08:461
23828521000,91pltrace0-21swapper/219:05:072
317762940,1sleep00-21swapper/021:10:200
2661652860,82pltrace0-21swapper/719:10:007
2655527042,10sleep00-21swapper/019:08:430
2646526046,10sleep40-21swapper/419:07:264
224952560,0sleep2361rcuc/221:55:002
286952310,3pltrace0-21swapper/721:20:177
2688452280,4pltrace0-21swapper/721:05:197
2237952250,0pltrace0-21swapper/721:54:407
1059152250,2pltrace0-21swapper/723:30:227
2691099241,16cyclictest0-21swapper/623:52:436
2691099230,16cyclictest0-21swapper/623:32:436
2798352200,3pltrace30108-21switchtime22:05:197
2689999200,14cyclictest0-21swapper/322:20:013
26890991915,2cyclictest0-21swapper/121:51:181
26890991915,2cyclictest0-21swapper/119:56:091
2580652190,5pltrace0-21swapper/720:05:257
2690799181,15cyclictest0-21swapper/523:00:055
26904991812,3cyclictest0-21swapper/400:13:574
2453652180,5pltrace0-21swapper/723:55:067
1508752180,0pltrace0-21swapper/722:43:537
1446452180,0pltrace0-21swapper/700:39:087
1167652180,5pltrace54-21ksoftirqd/400:33:544
2690499171,2cyclictest0-21swapper/423:12:064
26895991710,6cyclictest0-21swapper/221:44:002
2689599171,4cyclictest0-21swapper/221:21:392
2689599171,15cyclictest0-21swapper/221:35:472
2689099173,2cyclictest0-21swapper/120:55:401
1401252170,0pltrace0-21swapper/721:40:317
501952160,0pltrace0-21swapper/723:20:447
456752160,1pltrace0-21swapper/720:25:207
2860252160,13pltrace54-21ksoftirqd/420:13:404
26917991611,3cyclictest0-21swapper/723:50:257
26917991610,5cyclictest0-21swapper/723:19:217
2691799160,15cyclictest0-21swapper/719:24:107
26910991611,3cyclictest0-21swapper/623:37:206
26910991611,3cyclictest0-21swapper/600:17:506
2691099160,8cyclictest0-21swapper/623:49:176
2691099160,15cyclictest0-21swapper/620:02:306
2691099160,15cyclictest0-21swapper/600:22:596
26907991613,2cyclictest0-21swapper/500:10:135
2690799161,14cyclictest0-21swapper/521:40:375
2690799160,15cyclictest0-21swapper/521:49:345
26904991611,3cyclictest0-21swapper/422:56:174
2690499161,14cyclictest0-21swapper/421:01:434
2690499160,15cyclictest0-21swapper/419:12:504
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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