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2026-08-22 - 22:13
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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 Sat Aug 22, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1194726160,0sleep00-21swapper/007:28:540
1195824940,0sleep10-21swapper/107:29:031
1187324637,0sleep20-21swapper/207:28:042
1175823127,0sleep30-21swapper/307:26:413
339960,0migration/330061-21munin-node09:31:133
339960,0migration/320866-21switchtime10:41:163
339960,0migration/317422-21sh11:19:223
29815060,0irq/29-eth0-tx-12818-21munin-node09:01:060
29805060,0irq/28-eth0-rx-17954-21python11:36:173
249960,0watchdog/28708-21grep10:16:102
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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