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2025-11-22 - 13:08
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 20 highest latencies:
System rackeslot4.osadl.org (updated Sat Nov 22, 2025 00:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3107547993432,1cyclictest2912477-21kworker/0:0+pm21:13:140
310755199280,20cyclictest191rcu_preempt00:15:191
3107556992724,1cyclictest3230795-21diskmemload23:45:183
310755199272,22cyclictest3195089-21apt-get20:35:151
310755199271,22cyclictest3249869-21apt-get21:25:131
310755399260,6cyclictest3375615-21chrt23:04:442
310755399260,23cyclictest3382382-21ssh23:10:162
310755199263,21cyclictest311ktimers/100:03:171
310755699251,21cyclictest3490807-21apt-get00:35:143
310755699250,21cyclictest3326057-21fw_packets22:25:143
310755399251,21cyclictest3200160-21apt-get20:40:102
310755399250,5cyclictest3412140-21sed23:30:242
310755399250,21cyclictest3349485-21kworker/u8:3+rpciod23:05:142
310755199251,3cyclictest3386468-21ntpq23:10:261
310755199251,21cyclictest3363436-21apt-get22:55:121
310755199251,21cyclictest3281314-21apt-get21:50:131
310755199251,21cyclictest3230795-21diskmemload00:10:061
310755199251,20cyclictest0-21swapper/123:45:121
310755199251,20cyclictest0-21swapper/121:15:141
310755199250,20cyclictest0-21swapper/121:35:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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