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2025-12-25 - 21:37
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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 50 highest latencies:
System rack9slot2.osadl.org (updated Thu Dec 25, 2025 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
182642309271,26sleep00-21swapper/00
181842255186,37sleep20-21swapper/22
181802254188,37sleep30-21swapper/33
181682228191,24sleep10-21swapper/11
520421690,4sleep01867099cyclictest0
210112580,2sleep00-21swapper/00
83272410,2sleep20-21swapper/22
168622410,1sleep10-21swapper/11
107332410,1sleep20-21swapper/22
198612390,3sleep119858-21idleruntime-cro1
4892350,1sleep00-21swapper/00
266822290,3sleep2271rcuc/22
99152260,5sleep0340-21systemd-journal0
18681992620,4cyclictest13699-21/usr/sbin/munin3
1868199248,14cyclictest15736-21latency_hist3
1868199234,17cyclictest9189-21sendmail-mta3
1868199234,17cyclictest26443-21sendmail-mta3
1868199234,17cyclictest25859-21sendmail-mta3
1868199234,17cyclictest21743-21sendmail-mta3
1868199234,17cyclictest17646-21sendmail-mta3
1868199234,17cyclictest1583-21sendmail-mta3
1868199234,17cyclictest13836-21sendmail-mta3
1868199234,17cyclictest12223-21sendmail-mta3
1868199233,18cyclictest24489-21sendmail-mta3
1868199233,18cyclictest24489-21sendmail-mta3
1868199233,18cyclictest22336-21sendmail-mta3
1868199233,17cyclictest35-21ksoftirqd/33
1868199231,4cyclictest13039-1kworker/3:2H3
327442220,3sleep232710-21cstates2
1868199224,16cyclictest30808-21sendmail-mta3
1868199224,16cyclictest20401-21sendmail-mta3
1868199224,16cyclictest15344-21sendmail-mta3
1868199223,17cyclictest8135-21sendmail-mta3
1868199223,17cyclictest6577-21sendmail-mta3
1868199223,17cyclictest5087-21sendmail-mta3
1868199223,17cyclictest35-21ksoftirqd/33
1868199223,17cyclictest32065-21sendmail-mta3
1868199223,17cyclictest27698-21sendmail-mta3
1868199223,17cyclictest25150-21sendmail-mta3
1868199223,17cyclictest23596-21sendmail-mta3
1868199223,17cyclictest20438-21sendmail-mta3
1868199223,17cyclictest19507-21sendmail-mta3
1868199223,17cyclictest16290-21sendmail-mta3
1868199223,17cyclictest13249-21sendmail-mta3
1868199223,17cyclictest10976-21sendmail-mta3
1868199223,17cyclictest10976-21sendmail-mta3
1868199222,18cyclictest993-21sendmail-mta3
1868199220,20cyclictest23255-21munin-run3
18679992217,3cyclictest32206-21sed2
18670992210,10cyclictest9-21ksoftirqd/00
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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