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2026-07-15 - 11:11
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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
Characteristics of the 20 highest latencies:
System rackeslot2.osadl.org (updated Wed Jul 15, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
271624721540,2sleep30-21swapper/321:56:243
279574521040,2sleep30-21swapper/322:51:193
25631282800,3sleep00-21swapper/020:01:230
28413192740,2sleep12841161-21ssh23:21:231
28332482420,2sleep30-21swapper/323:16:203
29005522270,1sleep02900553-21/usr/sbin/munin00:01:220
2497824992615,5cyclictest1034-21runrttasks19:26:161
249782299237,11cyclictest2498161-21apt-get19:11:170
2497822992313,5cyclictest0-21swapper/000:10:020
27431212220,2sleep20-21swapper/222:16:192
249782499221,17cyclictest2654073-21apt-get21:16:171
249782299229,2cyclictest2752081-21kthreadcore22:21:250
2497822992216,2cyclictest191rcu_preempt21:40:000
3240591211,3phc2sys0-21swapper/320:31:163
2497824992118,2cyclictest2668164-21latency_hist21:25:011
2497824992118,2cyclictest2609606-21sh20:40:021
249782299217,4cyclictest2831846-21ssh23:15:010
2497822992114,6cyclictest0-21swapper/022:30:020
2497822992112,4cyclictest2622047-21apt-get20:51:170
2497824992014,2cyclictest69250irq/121-eno100:35:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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