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2026-04-23 - 04:54
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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 Thu Apr 23, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11182462258189,53sleep10-21swapper/119:07:371
11180992246202,28sleep00-21swapper/019:06:010
12987812770,4sleep01298602-21/usr/sbin/munin00:15:140
179699610,7rtkit-daemon1795-21rtkit-daemon21:25:120
179699610,4rtkit-daemon1795-21rtkit-daemon22:43:120
12049252530,12sleep126-21ksoftirqd/122:01:261
179699520,4rtkit-daemon1795-21rtkit-daemon23:09:290
179699520,4rtkit-daemon1795-21rtkit-daemon00:16:161
11580182520,5sleep00-21swapper/020:45:150
179699510,4rtkit-daemon1795-21rtkit-daemon23:01:060
179699510,4rtkit-daemon1795-21rtkit-daemon21:35:380
12964052510,4sleep00-21swapper/000:10:200
12389202510,1chrt1238919-21ssh22:50:201
179699500,4rtkit-daemon1795-21rtkit-daemon22:53:360
12584722500,5sleep00-21swapper/023:18:140
179699490,3rtkit-daemon1795-21rtkit-daemon23:32:180
179699480,3rtkit-daemon1795-21rtkit-daemon20:51:400
179699470,3rtkit-daemon1795-21rtkit-daemon20:33:201
111861599446,12cyclictest1277819-21apt-get23:45:130
179699430,4rtkit-daemon0-21swapper/121:53:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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