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2023-09-24 - 02:24
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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 rack1slot8.osadl.org (updated Sun Sep 24, 2023 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
224619918681788,69cyclictest13-21rcu_preempt19:50:320
2246199498420,51cyclictest0-21swapper/019:10:160
2246299460380,47cyclictest0-21swapper/119:10:161
2246299401353,29cyclictest0-21swapper/119:50:321
219842267243,16sleep00-21swapper/019:05:380
2277991360,5rtkit-daemon2276-21rtkit-daemon23:26:341
2277991120,4rtkit-daemon2276-21rtkit-daemon21:58:321
22231210482,15sleep10-21swapper/119:08:031
227799960,11rtkit-daemon0-21swapper/020:55:360
227799960,10rtkit-daemon0-21swapper/019:23:310
22462999211,69cyclictest0-21swapper/100:35:581
212522860,3sleep041ktimersoftd/021:42:390
227799850,7rtkit-daemon2276-21rtkit-daemon22:30:340
227799780,6rtkit-daemon2276-21rtkit-daemon22:55:281
227799780,4rtkit-daemon2276-21rtkit-daemon19:20:261
227799760,4rtkit-daemon2276-21rtkit-daemon23:20:351
21802760,3sleep12184-21needreboot22:05:301
247242750,3sleep0221rcuc/020:45:200
227799750,4rtkit-daemon2276-21rtkit-daemon23:12:300
227799750,4rtkit-daemon2276-21rtkit-daemon21:39:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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