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2026-03-31 - 13:39
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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 rackfslot7.osadl.org (updated Tue Mar 31, 2026 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
92861799930,92cyclictest0-21swapper/022:10:190
92861799920,91cyclictest0-21swapper/023:10:130
928622999132,58cyclictest1000413-21aten2.4_rfpower21:20:135
928622997618,39cyclictest988872-21latency_hist21:00:015
928622997437,18cyclictest236199-21snmpd19:29:105
928622997133,38cyclictest0-21swapper/523:18:175
928622997133,38cyclictest0-21swapper/523:18:165
928622997132,39cyclictest0-21swapper/520:11:535
928622997033,18cyclictest691ktimers/520:41:125
928622997032,19cyclictest0-21swapper/522:00:525
928622996911,58cyclictest1007699-21unixbench_singl21:30:235
92862299668,58cyclictest1101133-21chrt00:21:095
92862299646,39cyclictest968616-21ntpq20:20:195
928622996427,18cyclictest1086-21runrttasks21:10:215
92862299600,59cyclictest993413-21ntpq21:05:215
928618996021,19cyclictest0-21swapper/100:20:161
92862299591,39cyclictest1036671-21if_err_eno422:25:165
92862299580,39cyclictest947738-21cat19:45:005
928622995717,19cyclictest872-21mta-sts-daemon22:54:555
928622995618,19cyclictest934169-21munin-run19:20:015
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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