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2026-07-11 - 05:35
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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 Sat Jul 11, 2026 00:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1171273998931,39cyclictest1296752-21ld22:55:194
1171273997841,18cyclictest1287025-21/usr/sbin/munin22:40:144
1171273997841,18cyclictest1287025-21/usr/sbin/munin22:40:144
1171273997740,18cyclictest61-21ksoftirqd/419:30:144
1171273997719,39cyclictest1320219-21munin-run23:40:024
1171273997253,19cyclictest1300367-21taskset23:03:404
1171273997234,0cyclictest0-21swapper/421:04:134
1171273997233,39cyclictest61-21ksoftirqd/419:44:464
1171273997051,0cyclictest0-21swapper/422:37:224
1171273997051,0cyclictest0-21swapper/422:37:214
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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