You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2025-12-04 - 09:47
Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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 rack4slot6.osadl.org (updated Thu Dec 04, 2025 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13068521080,97pltrace0-21swapper/319:06:053
1306852930,57pltrace0-21swapper/719:08:367
2799852820,1pltrace0-21swapper/119:28:501
1592527742,10sleep00-21swapper/019:09:470
1593027562,9sleep50-21swapper/519:09:515
1567727561,10sleep20-21swapper/219:06:362
1571127360,9sleep60-21swapper/619:07:036
1560926551,10sleep10-21swapper/119:05:391
1567025943,11sleep40-21swapper/419:06:294
561552330,2pltrace0-21swapper/723:42:407
3243252310,2pltrace0-21swapper/723:30:117
3189152310,0pltrace0-21swapper/720:35:147
619252300,3pltrace0-21swapper/721:45:137
1737752300,3pltrace0-21swapper/722:05:187
115952300,0pltrace0-21swapper/719:40:117
64312290,0sleep50-21swapper/523:40:155
1613999210,1cyclictest0-21swapper/719:50:217
2910152200,3pltrace0-21swapper/720:30:227
1398652200,4pltrace0-21swapper/723:54:237
2574852190,2pltrace0-21swapper/722:20:217
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional