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2026-04-16 - 23:46
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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 Thu Apr 16, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2542524738,0sleep10-21swapper/107:18:011
2534324636,0sleep20-21swapper/207:17:052
2540124027,0sleep30-21swapper/307:17:423
2537122918,0sleep00-21swapper/007:17:230
25700991616,0cyclictest3524-21snmpd07:32:441
257089976,0cyclictest0-21swapper/209:55:482
339960,0migration/35360-21sh10:34:573
339960,0migration/327422-21sh12:39:483
29815060,0irq/29-eth0-tx-14443-21munin-node10:40:382
29805060,0irq/28-eth0-rx-32498-21perl10:50:353
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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