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2026-05-05 - 09:50
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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 Tue May 05, 2026 00:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29515472269194,60sleep10-21swapper/119:06:591
29517842260185,59sleep00-21swapper/019:09:290
30135312580,4sleep13012640-21/usr/sbin/munin21:25:221
179699530,4rtkit-daemon1795-21rtkit-daemon23:19:170
179699530,4rtkit-daemon1795-21rtkit-daemon19:15:380
179699510,3rtkit-daemon1795-21rtkit-daemon23:45:490
30220782480,4sleep00-21swapper/021:35:510
30418872470,4sleep03041886-21seq22:02:190
295194899433,12cyclictest2990542-21apt-get20:45:110
179699390,4rtkit-daemon0-21swapper/022:35:450
179699380,3rtkit-daemon0-21swapper/020:06:510
2951952993731,4cyclictest2981254-21cat20:20:181
179699370,3rtkit-daemon0-21swapper/019:40:400
179699360,3rtkit-daemon0-21swapper/120:52:520
179699360,3rtkit-daemon0-21swapper/023:21:180
179699360,3rtkit-daemon0-21swapper/022:05:100
179699360,3rtkit-daemon0-21swapper/020:13:210
29968762350,4sleep10-21swapper/121:00:021
2951952993515,4cyclictest26-21ksoftirqd/122:40:221
295194899352,15cyclictest3137052-21apt-get00:10:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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