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2026-08-15 - 00:30
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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 rack3slot6.osadl.org (updated Fri Aug 14, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
268021120,7chrt2678-21apt08:00:001
16757991086,80cyclictest0-21swapper/007:45:150
167579910551,34cyclictest0-21swapper/008:30:120
167619910272,17cyclictest26-21ksoftirqd/107:40:111
1675799997,22cyclictest0-21swapper/007:50:120
16761999864,23cyclictest26-21ksoftirqd/108:55:171
16757999648,28cyclictest14-21ksoftirqd/009:20:120
16761999564,20cyclictest26-21ksoftirqd/108:20:151
16761999563,18cyclictest26-21ksoftirqd/107:35:141
16761999463,21cyclictest26-21ksoftirqd/108:00:121
16761999463,21cyclictest26-21ksoftirqd/108:00:121
16757999347,29cyclictest0-21swapper/011:15:120
1676199916,68cyclictest11065-21apt-get09:55:141
1676199916,68cyclictest11065-21apt-get09:55:141
16761999157,20cyclictest26-21ksoftirqd/111:30:041
16761999056,22cyclictest26-21ksoftirqd/112:15:151
1676199905,54cyclictest0-21swapper/110:45:331
16761998913,62cyclictest0-21swapper/108:35:151
16761998854,21cyclictest26-21ksoftirqd/111:25:141
16761998854,21cyclictest26-21ksoftirqd/107:30:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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