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2025-07-12 - 11:05
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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 rack3slot6.osadl.org (updated Sat Jul 12, 2025 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
248749911092,10cyclictest14-21ksoftirqd/019:10:130
248829910760,26cyclictest26-21ksoftirqd/122:35:261
2487499986,50cyclictest6608-21apt-get00:20:130
2440529720,31sleep10-21swapper/119:07:011
24874999667,18cyclictest14-21ksoftirqd/023:45:250
24874999362,18cyclictest14-21ksoftirqd/020:10:140
24874999160,20cyclictest14-21ksoftirqd/021:30:150
24874999058,18cyclictest14-21ksoftirqd/020:40:150
24874998957,21cyclictest14-21ksoftirqd/021:20:180
24874998957,20cyclictest14-21ksoftirqd/021:25:170
24874998753,19cyclictest14-21ksoftirqd/020:45:140
24874998656,20cyclictest14-21ksoftirqd/019:45:170
24874998656,20cyclictest14-21ksoftirqd/019:45:170
2312528532,40sleep00-21swapper/019:05:130
24874998431,42cyclictest14-21ksoftirqd/023:00:130
24874998431,42cyclictest14-21ksoftirqd/023:00:130
24874998413,27cyclictest0-21swapper/022:00:160
2487499837,62cyclictest4785-21apt-get22:45:150
2487499837,62cyclictest4785-21apt-get22:45:140
2487499829,59cyclictest22847-21apt-get22:05:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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