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2026-06-23 - 16:40
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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 Jun 23, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1422627371,0sleep20-21swapper/207:21:512
1426425958,0sleep10-21swapper/107:22:151
14664995050,0cyclictest83050irq/26-0000:00:09:35:202
1444325039,0sleep30-21swapper/307:24:173
1457223524,0sleep00-21swapper/007:25:460
14662991515,0cyclictest3524-21snmpd11:18:220
146629999,0cyclictest3524-21snmpd11:53:280
8305060,0irq/26-0000:00:28121-21diskstats08:41:103
8305060,0irq/26-0000:00:27293-21perl07:56:093
8305060,0irq/26-0000:00:25436-21python07:51:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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