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2025-08-31 - 02:37
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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 20 highest latencies:
System rack3slot6.osadl.org (updated Sun Aug 31, 2025 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1598329731,18sleep10-21swapper/119:06:291
1594928419,39sleep00-21swapper/019:06:060
95262800,6sleep10-21swapper/120:55:191
95262800,6sleep10-21swapper/120:55:191
16491997857,11cyclictest14-21ksoftirqd/021:55:120
16491997224,38cyclictest27089-21apt-get21:45:140
16491996934,25cyclictest30662-21apt-get23:25:130
282672680,6sleep128265-21head23:15:481
16491996741,13cyclictest17908-21apt-get00:20:160
16491996722,21cyclictest261-21systemd-journal00:31:170
170172660,3sleep1251rcuc/100:15:451
16491996639,19cyclictest27156-21apt-get23:15:230
1649199656,45cyclictest12708-21apt-get21:05:180
16491996542,14cyclictest14-21ksoftirqd/023:05:130
16491996537,14cyclictest29363-21apt-get20:20:110
16491996535,15cyclictest3533-21apt-get23:40:130
16491996533,19cyclictest32632-21apt-get22:00:210
16491996523,36cyclictest261-21systemd-journal23:51:070
146052650,6sleep114606-21sshd22:40:211
16491996435,15cyclictest1950-21apt-get22:05:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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