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2026-09-28 - 01:28
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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 rackbslot7.osadl.org (updated Sat Sep 26, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1012723420,32sleep3451rcuc/319:05:123
992821549,113sleep00-21swapper/019:04:410
9746210210,64sleep29763-21/usr/sbin/munin19:03:372
112629910243,52cyclictest18198-21diskmemload22:18:492
112629910243,52cyclictest18198-21diskmemload22:18:492
11262999851,40cyclictest23512-40mandb23:58:282
11256999778,11cyclictest11233-21cyclictest20:38:581
1126299942,41cyclictest25614-21awk19:48:592
11262999341,44cyclictest0-21swapper/219:44:582
1126299924,35cyclictest9436-21/usr/sbin/munin00:29:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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