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2026-03-31 - 20:16
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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 Tue Mar 31, 2026 12:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
364990599130111,0cyclictest601ktimers/407:59:274
364990599123100,19cyclictest601ktimers/407:40:364
36499059911033,58cyclictest3611680-21kworker/u32:1+events_unbound07:20:114
364990599110110,0cyclictest601ktimers/408:09:574
364990599110109,1cyclictest601ktimers/408:10:454
364990599106106,0cyclictest0-21swapper/408:02:554
3649905991030,1cyclictest0-21swapper/411:40:154
3649905999393,0cyclictest601ktimers/407:49:254
364990199841,0cyclictest0-21swapper/012:05:160
3649905997335,19cyclictest3730234-21aten2.4-expect09:35:144
3649905997214,39cyclictest3654240-21ntpq07:15:224
3649901997213,39cyclictest3713315-21kworker/0:1+ice09:35:170
3649905997011,58cyclictest3781637-21sed11:05:234
3649905997011,58cyclictest3781637-21sed11:05:224
3649905996932,18cyclictest3816233-21expr12:10:144
3649905996829,39cyclictest0-21swapper/408:36:504
364990599679,39cyclictest3753711-21find10:15:234
3649905996749,18cyclictest601ktimers/411:37:424
3649905996628,20cyclictest3789526-21ldconfig11:20:194
3649905996627,19cyclictest0-21swapper/407:53:154
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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