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2026-03-24 - 00:56
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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 50 highest latencies:
System rack5slot2.osadl.org (updated Mon Mar 23, 2026 12:44:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
233872236221,10sleep10-21swapper/107:06:111
235872197180,12sleep00-21swapper/007:08:460
236622187170,12sleep30-21swapper/307:09:463
234702184167,12sleep20-21swapper/207:07:162
138642430,0sleep20-21swapper/210:09:562
57962120,0sleep35798-21sh10:05:193
234452100,0sleep30-21swapper/312:05:133
238589991,4cyclictest8824-21basename10:55:010
16300290,0sleep30-21swapper/307:55:163
238589960,6cyclictest0-21swapper/011:22:180
238589960,5cyclictest0-21swapper/012:15:120
238589960,5cyclictest0-21swapper/008:50:120
31993250,0sleep10-21swapper/111:37:381
31566250,0sleep10-21swapper/109:46:211
238679953,1cyclictest9057-21ssh10:55:013
238679950,5cyclictest27152-21sh12:39:313
238679950,5cyclictest17316-21apt-get09:40:013
238679950,5cyclictest0-21swapper/312:24:143
238679950,5cyclictest0-21swapper/312:12:093
238679950,5cyclictest0-21swapper/309:22:133
238679950,0cyclictest2907-21ssh11:07:243
238679950,0cyclictest0-21swapper/310:01:553
238619955,0cyclictest0-21swapper/211:27:382
238619955,0cyclictest0-21swapper/211:17:522
238619955,0cyclictest0-21swapper/210:51:422
238619954,1cyclictest31-21ksoftirqd/207:50:012
238619953,1cyclictest21886-21diskstats10:45:112
238619950,5cyclictest4022-21ssh09:17:332
238619950,5cyclictest0-21swapper/211:12:382
238619950,5cyclictest0-21swapper/207:24:292
238619950,4cyclictest0-21swapper/209:36:582
238619950,0cyclictest0-21swapper/211:07:242
238599950,5cyclictest0-21swapper/111:23:371
238599950,5cyclictest0-21swapper/111:19:071
238599950,5cyclictest0-21swapper/110:32:421
238599950,3cyclictest0-21swapper/108:40:121
238599950,0cyclictest0-21swapper/112:37:161
238589955,0cyclictest19873-21diskmemload12:13:400
238589950,5cyclictest0-21swapper/011:39:360
238589950,5cyclictest0-21swapper/010:47:060
238589950,5cyclictest0-21swapper/009:25:460
238589950,5cyclictest0-21swapper/008:15:020
238589950,5cyclictest0-21swapper/008:15:010
238589950,4cyclictest0-21swapper/010:30:100
238589950,1cyclictest32160-21awk07:25:000
238589950,1cyclictest26223-21munin-run07:15:000
238589950,0cyclictest0-21swapper/011:08:020
238679944,0cyclictest7879-21ssh09:19:523
238679944,0cyclictest26441-21kworker/3:108:59:363
238679944,0cyclictest26441-21kworker/3:108:26:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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