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2025-11-03 - 06:28
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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 rackaslot8.osadl.org (updated Mon Nov 03, 2025 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
177122327295,20sleep20-21swapper/219:05:112
195682296261,23sleep10-21swapper/119:08:241
196542265229,22sleep00-21swapper/019:09:310
195652264230,21sleep30-21swapper/319:08:213
7602670,0sleep00-21swapper/023:11:280
83352600,0sleep10-21swapper/123:16:221
202302570,0sleep30-21swapper/321:37:193
57162540,0sleep30-21swapper/323:15:153
269802220,0sleep20-21swapper/221:41:372
120112220,0sleep20-21swapper/200:03:042
266112180,0sleep30-21swapper/319:20:233
231152180,0sleep30-21swapper/319:15:143
183492160,0sleep00-21swapper/023:44:390
62972150,0sleep10-21swapper/100:24:401
290582130,0sleep10-21swapper/123:09:281
260612130,0sleep30-21swapper/321:40:493
1978599133,1cyclictest0-21swapper/123:29:251
1978599132,3cyclictest0-21swapper/123:11:211
1978599131,2cyclictest19982-21systemd-journal21:32:541
142352130,0sleep20-21swapper/222:37:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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