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2024-04-19 - 22:49
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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 rackcslot4.osadl.org (updated Fri Apr 19, 2024 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6250822317275,27sleep10-21swapper/107:08:581
6251742302267,19sleep00-21swapper/007:09:560
8018312680,4sleep1251rcuc/112:19:311
625306996258,3cyclictest685119-21kworker/u8:309:32:591
159199610,4rtkit-daemon1590-21rtkit-daemon10:09:520
7194192550,2sleep10-21swapper/110:14:021
159199530,5rtkit-daemon1590-21rtkit-daemon12:24:000
159199530,4rtkit-daemon1590-21rtkit-daemon09:17:330
159199530,3rtkit-daemon1590-21rtkit-daemon11:02:241
159199480,4rtkit-daemon1590-21rtkit-daemon08:12:490
159199470,3rtkit-daemon1590-21rtkit-daemon10:24:290
159199450,3rtkit-daemon1590-21rtkit-daemon10:25:280
159199430,3rtkit-daemon1590-21rtkit-daemon12:00:240
159199390,6rtkit-daemon734905-21ssh10:37:570
159199380,4rtkit-daemon0-21swapper/009:42:100
159199380,3rtkit-daemon1590-21rtkit-daemon10:10:440
159199370,4rtkit-daemon1590-21rtkit-daemon10:25:351
159199370,3rtkit-daemon0-21swapper/007:18:440
159199360,3rtkit-daemon0-21swapper/110:30:080
159199360,3rtkit-daemon0-21swapper/011:26:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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