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2024-02-28 - 13:09
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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 rack0slot5.osadl.org (updated Wed Feb 28, 2024 00:43:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
122567299463462,1cyclictest0-21swapper/216:33:068
122567299457457,0cyclictest0-21swapper/217:25:138
122567299441440,1cyclictest0-21swapper/220:37:238
122567299431430,1cyclictest0-21swapper/220:27:538
122568699429426,3cyclictest0-21swapper/617:25:0512
122566999429429,0cyclictest0-21swapper/120:37:231
122570499428428,0cyclictest0-21swapper/1217:25:134
122567299426426,0cyclictest0-21swapper/218:31:498
122568699422421,1cyclictest1511844-21kworker/u32:5+events_unbound20:02:5112
122567799420420,0cyclictest0-21swapper/315:44:169
122571399413412,1cyclictest1328177-21kworker/u32:0+events_unbound17:25:056
122569899413413,0cyclictest0-21swapper/1016:10:502
122570499412411,1cyclictest1599119-21ntp_states20:37:234
122566999409408,1cyclictest1543291-21kworker/u32:3+events_unbound20:27:531
122571399406406,0cyclictest0-21swapper/1420:02:516
122570499400400,0cyclictest0-21swapper/1216:33:064
122570499397397,0cyclictest0-21swapper/1218:31:494
122567999396395,1cyclictest1133420-21kworker/4:1+events17:25:1310
122570499391391,0cyclictest0-21swapper/1220:02:514
122567299390390,0cyclictest0-21swapper/220:03:038
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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