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2026-06-08 - 07:00
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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 20 highest latencies:
System rackeslot3.osadl.org (updated Mon Jun 08, 2026 00:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2373683997243,27cyclictest1833018-1kworker/1:0H23:40:001
237368399680,2cyclictest0-21swapper/122:20:131
2373683996544,19cyclictest1833018-1kworker/1:0H22:40:001
2373683996542,22cyclictest2502975-21kworker/1:023:05:151
2373683996542,22cyclictest2502975-21kworker/1:023:05:141
2373683996531,32cyclictest1833018-1kworker/1:0H21:25:001
237368399650,64cyclictest0-21swapper/121:36:501
237368399650,64cyclictest0-21swapper/121:36:491
2373683996458,5cyclictest0-21swapper/122:16:391
2373683996445,18cyclictest2372323-21kworker/1:019:10:131
237368399641,1cyclictest0-21swapper/120:30:311
237368399640,2cyclictest2396298-21fschecks_count20:20:141
2373683996360,2cyclictest0-21swapper/100:20:261
2373683996341,20cyclictest2445552-21kworker/1:322:00:141
2373683996340,21cyclictest1833018-1kworker/1:0H21:29:591
2373683996258,2cyclictest0-21swapper/121:14:551
2373683996240,20cyclictest2540193-21kworker/1:123:40:151
2373683996142,18cyclictest2391738-21kworker/1:320:11:281
2373683996141,19cyclictest2502975-21kworker/1:023:10:211
2373683996141,19cyclictest2478731-21kworker/1:122:50:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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