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2025-12-27 - 06:29
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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 Sat Dec 27, 2025 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33526522259219,25sleep00-21swapper/019:05:200
33538312256181,58sleep10-21swapper/119:07:071
179699870,6rtkit-daemon3395973-21memory20:50:210
34816712700,6sleep10-21swapper/122:49:171
179699660,3rtkit-daemon1795-21rtkit-daemon23:59:200
34438252640,4sleep13443829-21latency_hist22:00:001
179699620,4rtkit-daemon1795-21rtkit-daemon20:24:260
179699590,4rtkit-daemon1795-21rtkit-daemon00:00:230
34431052570,3sleep00-21swapper/021:58:510
3354204995614,22cyclictest3509083-21apt-get23:25:130
179699560,13rtkit-daemon1795-21rtkit-daemon22:39:560
35550042540,4sleep126-21ksoftirqd/100:25:011
179699540,4rtkit-daemon1795-21rtkit-daemon23:52:180
179699510,4rtkit-daemon1795-21rtkit-daemon00:12:050
179699500,4rtkit-daemon1795-21rtkit-daemon21:33:130
3354204994913,12cyclictest3379304-21apt-get20:10:170
179699490,4rtkit-daemon1795-21rtkit-daemon20:47:360
335420499489,20cyclictest3408206-21apt-get21:15:120
335420499478,21cyclictest3436213-21apt-get21:50:100
179699470,3rtkit-daemon1795-21rtkit-daemon21:02:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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