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2026-07-25 - 20:31
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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 Jul 25, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1138024938,0sleep20-21swapper/207:26:342
1126223127,0sleep10-21swapper/107:25:131
581822723,0sleep30-21swapper/307:23:513
1117022723,0sleep00-21swapper/007:24:080
116229970,0cyclictest593-21date12:43:331
339960,0migration/320015-21sh10:22:213
339960,0migration/315004-21munin-node10:38:503
339960,0migration/313451-21gltestperf11:53:493
29815060,0irq/29-eth0-tx-18869-21munin-node10:04:002
29805060,0irq/28-eth0-rx-7929-21df12:28:493
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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