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2026-07-07 - 00:53
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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 10 highest latencies:
System rackfslot7.osadl.org (updated Mon Jul 06, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2477157999537,39cyclictest236199-21snmpd11:26:416
2477157997535,19cyclictest2532617-21taskset08:50:036
2477157997515,39cyclictest2628768-21/usr/sbin/munin11:45:236
2477157997416,39cyclictest2521306-21chrt08:30:016
2477157997333,19cyclictest2605908-21GUsbEventThread12:03:196
2477157997030,40cyclictest871-21mta-sts-daemon08:46:316
2477157996930,19cyclictest0-21swapper/612:25:036
2477157996930,19cyclictest0-21swapper/607:32:156
2477157996929,38cyclictest2477150-21cyclictest09:33:436
2477157996830,18cyclictest0-21swapper/608:07:516
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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