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2024-07-27 - 03:40
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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 Sat Jul 27, 2024 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28294002234174,48sleep00-21swapper/019:09:140
28294222233172,21sleep20-21swapper/219:09:312
28294132228168,20sleep40-21swapper/419:09:264
28272612222170,17sleep50-21swapper/519:06:225
28294352218188,20sleep60-21swapper/619:09:446
28294032217185,20sleep30-21swapper/319:09:163
28293922206175,19sleep10-21swapper/119:09:071
28292952205177,17sleep70-21swapper/719:07:447
282967699332,3cyclictest2851785-21sh19:50:004
2829676993227,4cyclictest2966666-21apt23:20:004
282966999320,31cyclictest2996899-21idleruntime-cro00:15:011
282968699310,30cyclictest2931151-21sh22:15:016
282968199310,30cyclictest2920953-21apt-get21:57:095
2829676993126,4cyclictest0-21swapper/420:50:024
282967699310,28cyclictest0-21swapper/420:52:104
2829674993128,2cyclictest2996900-21apt00:15:003
2829689993026,3cyclictest3010867-21sh00:40:017
282968999300,29cyclictest2988624-21gpgv00:00:007
282968699300,29cyclictest2999593-21latency_hist00:20:016
282968699300,29cyclictest2994206-21sh00:10:016
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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