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2026-01-09 - 12:59
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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 50 highest latencies:
System rackdslot3.osadl.org (updated Fri Jan 09, 2026 00:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
218672206172,23sleep20-21swapper/219:08:252
216742206173,22sleep30-21swapper/319:06:013
218452202169,22sleep00-21swapper/019:08:070
218962201169,21sleep10-21swapper/119:08:481
1713621560,5sleep02228399cyclictest22:20:180
139391660,1ptp4l401ktimersoftd/319:25:143
55622620,2sleep00-21swapper/000:10:160
22283996227,4cyclictest9-21ksoftirqd/023:25:150
139391620,1ptp4l401ktimersoftd/320:05:253
22283996131,4cyclictest9-21ksoftirqd/019:10:190
22283996127,6cyclictest9-21ksoftirqd/020:25:000
22283996126,9cyclictest9-21ksoftirqd/022:40:240
139391610,0ptp4l401ktimersoftd/322:26:253
39002600,2sleep30-21swapper/320:45:173
22283996028,5cyclictest9-21ksoftirqd/022:25:180
22283996023,4cyclictest9-21ksoftirqd/023:15:270
22283995930,3cyclictest9-21ksoftirqd/019:15:210
22283995728,5cyclictest9-21ksoftirqd/020:25:170
22283995725,4cyclictest9-21ksoftirqd/000:20:240
22283995723,6cyclictest9-21ksoftirqd/019:30:190
2228399565,9cyclictest9-21ksoftirqd/022:40:000
2228399555,9cyclictest9-21ksoftirqd/000:15:250
22283995526,4cyclictest9-21ksoftirqd/023:20:200
22283995523,6cyclictest9-21ksoftirqd/021:20:000
2228399546,8cyclictest9-21ksoftirqd/022:30:170
2228399545,9cyclictest9-21ksoftirqd/019:40:220
2228399545,5cyclictest9-21ksoftirqd/021:50:190
2228399544,9cyclictest9-21ksoftirqd/023:45:010
22283995428,7cyclictest9-21ksoftirqd/000:05:520
22283995424,11cyclictest9-21ksoftirqd/021:30:130
22283995420,4cyclictest9-21ksoftirqd/021:10:170
1394915437,9phc2sys0-21swapper/319:10:023
2228399536,10cyclictest9-21ksoftirqd/021:55:180
2228399533,9cyclictest9-21ksoftirqd/020:55:230
2228399533,9cyclictest9-21ksoftirqd/020:55:230
2228399533,9cyclictest9-21ksoftirqd/020:50:170
22283995325,5cyclictest9-21ksoftirqd/020:30:170
22283995321,5cyclictest9-21ksoftirqd/021:45:240
2228399524,8cyclictest9-21ksoftirqd/000:30:140
2228399524,10cyclictest9-21ksoftirqd/021:05:210
2228399523,8cyclictest9-21ksoftirqd/022:10:160
2228399523,8cyclictest9-21ksoftirqd/022:10:150
2228399522,9cyclictest9-21ksoftirqd/019:35:140
2228399522,8cyclictest9-21ksoftirqd/019:50:150
22283995222,5cyclictest9-21ksoftirqd/022:00:130
2228399513,5cyclictest3422-21systemctl22:59:590
22283995123,3cyclictest9-21ksoftirqd/021:25:180
22283995122,7cyclictest9-21ksoftirqd/020:45:270
22283995118,3cyclictest9-21ksoftirqd/023:02:590
2228499501,2cyclictest28807-21apt-get22:45:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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