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2026-04-09 - 19:45
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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 Thu Apr 09, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12152210526,25sleep10-21swapper/107:06:201
12680998133,42cyclictest14-21ksoftirqd/008:45:000
1217527720,48sleep00-21swapper/007:06:350
12680997429,8cyclictest14-21ksoftirqd/009:20:010
1268099716,54cyclictest12949-21apt-get11:40:140
12680997151,16cyclictest188422sleep007:25:230
12680997115,51cyclictest0-21swapper/012:15:120
12680997033,21cyclictest14-21ksoftirqd/007:36:520
12680997014,17cyclictest0-21swapper/011:10:130
12680996833,20cyclictest14-21ksoftirqd/011:45:160
12680996830,21cyclictest14-21ksoftirqd/010:05:460
12680996751,9cyclictest14-21ksoftirqd/009:00:210
12680996743,14cyclictest0-21swapper/011:20:100
12680996739,17cyclictest0-21swapper/008:00:130
12680996613,47cyclictest0-21swapper/007:55:130
12680996413,45cyclictest0-21swapper/007:10:130
72602620,7chrt7259-21/usr/sbin/munin08:20:311
1268099624,18cyclictest457-21dbus-daemon10:45:000
12682996143,12cyclictest26-21ksoftirqd/107:20:281
12682996137,19cyclictest28767-21cron10:54:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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