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2025-11-20 - 17:37
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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 Thu Nov 20, 2025 12:46:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2401492999314,40cyclictest2523014-21grep10:40:211
2401492998911,60cyclictest2481131-21systemd-run09:30:021
240149299780,59cyclictest2547014-21taskset11:24:361
2401492997234,38cyclictest101950irq/41-eno2-TxRx-207:11:531
2401492997234,38cyclictest101950irq/41-eno2-TxRx-207:11:531
2401492997113,39cyclictest872-21mta-sts-daemon07:35:031
2401492997113,39cyclictest2455859-21munin-run08:45:011
2401492997033,18cyclictest101950irq/41-eno2-TxRx-209:05:111
2401492997031,38cyclictest2564628-21aten2.4_rfpower11:55:101
2401492996911,39cyclictest2465329-21fw_packets09:00:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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