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2026-05-12 - 11:19
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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 50 highest latencies:
System rack3slot6.osadl.org (updated Tue May 12, 2026 00:45:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15621998744,21cyclictest14-21ksoftirqd/020:05:280
1562199856,49cyclictest26551-21memory00:10:360
15626998332,37cyclictest26-21ksoftirqd/122:54:361
15626998215,61cyclictest0-21swapper/121:15:131
15626998030,45cyclictest0-21swapper/119:25:121
15621998043,15cyclictest14-21ksoftirqd/020:20:180
15626997913,60cyclictest26-21ksoftirqd/120:40:121
15626997913,60cyclictest26-21ksoftirqd/120:40:121
1562199775,19cyclictest12166-21apt-get22:00:160
15626997658,11cyclictest26-21ksoftirqd/119:20:111
15626997557,11cyclictest26-21ksoftirqd/119:50:141
15621997543,22cyclictest14-21ksoftirqd/000:30:170
15621997539,24cyclictest14-21ksoftirqd/020:10:280
1387727528,35sleep00-21swapper/019:05:140
15621997441,12cyclictest14-21ksoftirqd/023:40:170
15621997438,23cyclictest14-21ksoftirqd/023:45:180
15626997322,37cyclictest26-21ksoftirqd/123:40:381
15621997335,23cyclictest14-21ksoftirqd/023:52:200
15621997313,47cyclictest14-21ksoftirqd/023:55:160
1562199728,13cyclictest1554-21irqstats23:00:340
15621997240,22cyclictest14-21ksoftirqd/019:15:290
15621997238,15cyclictest14-21ksoftirqd/022:24:260
15626997145,13cyclictest26-21ksoftirqd/123:55:131
15626997126,40cyclictest26-21ksoftirqd/123:04:171
1562199717,7cyclictest151rcu_preempt20:25:300
1562199706,56cyclictest29782-21apt-get00:20:150
1562199706,39cyclictest11973-21munin-run22:00:010
15626996953,10cyclictest26-21ksoftirqd/120:35:141
15626996942,13cyclictest26-21ksoftirqd/120:25:141
15621996934,29cyclictest14-21ksoftirqd/021:19:040
1562199687,14cyclictest562-21runrttasks00:19:290
15621996833,13cyclictest14-21ksoftirqd/022:35:170
1524826821,36sleep10-21swapper/119:08:011
15621996745,15cyclictest14-21ksoftirqd/023:25:360
15621996745,15cyclictest14-21ksoftirqd/022:10:260
15621996733,13cyclictest14-21ksoftirqd/020:35:180
15621996624,13cyclictest14-21ksoftirqd/020:30:160
15621996623,9cyclictest14948-21munin-run23:40:010
15621996614,11cyclictest30840-21users22:50:390
15621996610,43cyclictest503-21snmpd21:47:080
15621996610,41cyclictest30690-21aten2.4-expect19:50:180
15626996521,38cyclictest0-21swapper/121:50:111
1562199659,28cyclictest151rcu_preempt19:25:200
1562199659,13cyclictest23728-21munin-run00:05:000
1562199655,43cyclictest0-21swapper/019:39:040
15621996543,16cyclictest14-21ksoftirqd/020:55:260
15621996543,16cyclictest14-21ksoftirqd/020:55:250
15621996534,21cyclictest14-21ksoftirqd/021:25:290
15621996533,22cyclictest14-21ksoftirqd/022:45:330
15621996532,13cyclictest14-21ksoftirqd/022:55:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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