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2026-05-06 - 16:24
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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 Wed May 06, 2026 12:46:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12054529910872,18cyclictest331ktimers/107:15:171
1205456999313,79cyclictest0-21swapper/508:15:165
120545899801,39cyclictest1258104-21systemctl08:45:027
1205458997618,39cyclictest1308324-21df_inode10:15:147
1205458997617,39cyclictest1259402-21ntpq08:45:187
1205458997513,40cyclictest1385816-21cat12:35:167
1205458997436,19cyclictest1222175-21sed07:40:027
1205458997416,39cyclictest1344468-21perl11:20:157
1205458997314,21cyclictest0-21swapper/711:30:557
1205458997314,21cyclictest0-21swapper/711:30:547
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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