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2026-07-14 - 11:41
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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 Tue Jul 14, 2026 00:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2365624940,0sleep20-21swapper/219:23:092
1713124140,0sleep00-21swapper/019:22:470
2371323523,0sleep10-21swapper/119:23:481
2368323026,0sleep30-21swapper/319:23:263
241109988,0cyclictest3524-21snmpd20:22:210
29805070,0irq/28-eth0-rx-0-21swapper/320:08:453
35160,0ktimersoftd/30-21swapper/320:02:373
339960,0migration/327394-21sh21:38:193
339960,0migration/326765-21sh22:34:343
339960,0migration/325580-21sh23:30:533
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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