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2026-08-11 - 14:56
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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 rackdslot3.osadl.org (updated Tue Aug 11, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491225160,53phc2sys0-21swapper/319:06:333
326052220154,21sleep20-21swapper/219:08:312
324592206173,22sleep10-21swapper/119:06:461
326352202169,22sleep00-21swapper/019:08:530
2428221730,5sleep174599cyclictest00:25:221
3273821020,1sleep032737-21cut22:30:160
744996428,5cyclictest9-21ksoftirqd/020:20:010
85692630,2sleep00-21swapper/021:40:170
74799639,17cyclictest1300-21snmpd22:05:213
74799637,16cyclictest9378-21/usr/sbin/munin20:35:253
744996325,4cyclictest9-21ksoftirqd/000:30:000
744996324,8cyclictest9-21ksoftirqd/022:25:280
744996324,6cyclictest9-21ksoftirqd/023:05:230
744996224,6cyclictest9-21ksoftirqd/022:20:240
744996224,6cyclictest9-21ksoftirqd/019:45:180
744996223,6cyclictest9-21ksoftirqd/019:50:190
744996223,5cyclictest9-21ksoftirqd/022:50:230
744996223,5cyclictest9-21ksoftirqd/022:00:170
744996223,5cyclictest9-21ksoftirqd/020:00:170
74799617,16cyclictest15774-21timerwakeupswit20:45:283
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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