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2026-09-11 - 22:59
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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 20 highest latencies:
System rack1slot1.osadl.org (updated Fri Sep 11, 2026 12:45:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
59372212148,21sleep00-21swapper/007:07:080
59092204160,24sleep20-21swapper/207:06:472
60102200161,25sleep10-21swapper/107:08:061
60222199158,26sleep30-21swapper/307:08:163
74272580,0sleep00-21swapper/010:51:490
68962200,0sleep30-21swapper/308:15:163
6245991616,0cyclictest9-21ksoftirqd/011:55:110
6259991414,0cyclictest28-21ksoftirqd/211:10:122
6259991211,1cyclictest28-21ksoftirqd/207:30:012
625399120,10cyclictest0-21swapper/107:30:131
6245991211,1cyclictest9-21ksoftirqd/008:20:010
6245991210,1cyclictest9-21ksoftirqd/010:05:000
626799110,10cyclictest8613-21munin-node09:40:493
6259991111,0cyclictest28-21ksoftirqd/210:25:132
6259991110,1cyclictest28-21ksoftirqd/212:25:202
6259991110,1cyclictest28-21ksoftirqd/208:55:122
6259991110,1cyclictest28-21ksoftirqd/208:39:592
624599119,1cyclictest9-21ksoftirqd/010:15:010
6245991110,1cyclictest9-21ksoftirqd/009:31:050
6245991110,0cyclictest9-21ksoftirqd/009:55:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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