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2026-06-12 - 06:58
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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 rack1slot2.osadl.org (updated Fri Jun 12, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1458624031,0sleep10-21swapper/119:23:371
1447423927,0sleep20-21swapper/219:22:182
1435923725,0sleep00-21swapper/019:20:560
1446523223,0sleep30-21swapper/319:22:113
14779991111,0cyclictest3524-21snmpd21:55:060
147819970,0cyclictest0-21swapper/222:35:202
339960,0migration/36898-21munin-node23:05:193
339960,0migration/332190-21gltestperf23:20:143
339960,0migration/33029-21ntp_offset19:35:203
339960,0migration/321748-21sh00:26:343
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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