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2024-07-16 - 08:48
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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 rack8slot4.osadl.org (updated Mon Jul 15, 2024 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30137662232175,18sleep70-21swapper/707:06:597
30137262224163,19sleep50-21swapper/507:06:255
30158442217189,18sleep40-21swapper/407:08:574
30137002217162,17sleep60-21swapper/607:06:026
30158702216186,19sleep30-21swapper/307:09:193
30136872212184,18sleep20-21swapper/207:05:492
30136572212178,22sleep10-21swapper/107:05:251
30158962209182,17sleep00-21swapper/007:09:410
3016136994745,1cyclictest0-21swapper/112:10:011
301615099360,30cyclictest3136428-21sh10:50:024
301613699340,29cyclictest3182867-21debian-sa112:15:011
301615699310,3cyclictest3038537-21sh07:50:006
301614699310,30cyclictest3172098-21idleruntime-cro11:55:003
3016141993129,1cyclictest0-21swapper/207:15:002
3016135993128,2cyclictest367-21systemd-journal09:30:020
301613599310,30cyclictest3188259-21sh12:25:010
301615899300,29cyclictest3174798-21munin-run12:00:017
301615899300,29cyclictest3144556-21idleruntime-cro11:05:017
301615899300,29cyclictest3093254-21munin-run09:30:027
301615699300,29cyclictest3074103-21sh08:55:016
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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