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2026-04-02 - 15:10
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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 rackfslot7.osadl.org (updated Thu Apr 02, 2026 00:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3436690991780,177cyclictest0-21swapper/523:50:125
3436692991630,0cyclictest0-21swapper/700:05:117
3436689996910,59cyclictest0-21swapper/421:35:144
3436689995617,39cyclictest61-21ksoftirqd/422:25:164
3436691995315,19cyclictest0-21swapper/620:15:166
3436691995213,39cyclictest0-21swapper/621:10:166
3436687995214,19cyclictest0-21swapper/200:25:132
3436689995132,19cyclictest0-21swapper/400:15:164
3436689995113,38cyclictest0-21swapper/422:30:164
3436689995113,19cyclictest0-21swapper/419:45:164
3436688995112,19cyclictest0-21swapper/319:35:133
3436686995131,1cyclictest3517321-21tune2fs21:35:141
3436689994910,39cyclictest0-21swapper/419:15:154
343668799499,39cyclictest43-21ksoftirqd/221:30:162
3436685994911,38cyclictest0-21swapper/000:15:150
343668999489,39cyclictest0-21swapper/423:25:144
3436687994810,19cyclictest0-21swapper/223:50:162
343668599488,39cyclictest0-21swapper/019:10:170
343668899477,39cyclictest0-21swapper/300:30:173
343669299458,18cyclictest0-21swapper/719:50:187
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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