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2026-06-03 - 04:31
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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 Wed Jun 03, 2026 00:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
301959911484,19cyclictest14-21ksoftirqd/020:05:170
301959911280,18cyclictest14-21ksoftirqd/021:45:230
301959910576,17cyclictest14-21ksoftirqd/023:40:220
301959910572,23cyclictest14-21ksoftirqd/023:25:120
301959910471,19cyclictest0-21swapper/000:15:170
301959910230,37cyclictest7457-21aten2.4_r3power21:15:180
301959910230,37cyclictest7457-21aten2.4_r3power21:15:180
30195999931,56cyclictest14-21ksoftirqd/020:15:230
30195999864,22cyclictest14-21ksoftirqd/023:10:130
30199999711,28cyclictest0-21swapper/120:40:121
30195999734,54cyclictest14-21ksoftirqd/021:05:140
30195999710,75cyclictest0-21swapper/022:50:130
2844229716,31sleep10-21swapper/119:05:071
3019599962,66cyclictest29134-21awk23:45:300
30195999611,34cyclictest0-21swapper/022:20:130
30195999518,65cyclictest5402-21diskmemload21:10:150
3019599945,78cyclictest0-21swapper/000:20:160
30195999457,24cyclictest14-21ksoftirqd/023:35:120
3019599938,73cyclictest0-21swapper/021:25:150
30195999359,21cyclictest14-21ksoftirqd/022:55:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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