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2026-03-15 - 14:50
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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 rackcslot4.osadl.org (updated Sun Mar 15, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40172092268196,27sleep10-21swapper/119:09:411
40168922248213,20sleep00-21swapper/019:06:190
179699730,8rtkit-daemon0-21swapper/121:17:531
41760952620,4sleep14176094-21sed23:40:241
179699570,4rtkit-daemon1795-21rtkit-daemon19:59:070
179699560,6rtkit-daemon1795-21rtkit-daemon22:49:011
179699530,4rtkit-daemon1795-21rtkit-daemon23:23:591
119682510,3sleep0161rcuc/000:25:180
41548012500,7sleep00-21swapper/023:10:250
179699500,4rtkit-daemon1795-21rtkit-daemon21:55:451
179699500,4rtkit-daemon1795-21rtkit-daemon20:38:471
179699500,3rtkit-daemon1795-21rtkit-daemon21:45:141
179699500,3rtkit-daemon1795-21rtkit-daemon20:46:041
179699490,4rtkit-daemon1795-21rtkit-daemon20:29:131
179699480,3rtkit-daemon1795-21rtkit-daemon20:22:311
179699470,3rtkit-daemon1795-21rtkit-daemon20:43:201
179699450,11rtkit-daemon4093839-21ssh21:46:040
40582692430,2sleep04058178-21apt-key20:50:020
179699420,7rtkit-daemon698-21rm00:06:161
41250012410,5sleep04125002-21cat22:30:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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