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2026-06-28 - 17:16
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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 rackbslot7.osadl.org (updated Sun Jun 28, 2026 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3000221317,101sleep00-21swapper/006:53:320
3000221317,101sleep00-21swapper/006:53:320
31292991183,99cyclictest5751-21diskmemload10:33:190
31292991183,99cyclictest5751-21diskmemload10:33:190
2245121080,3sleep022132-21kworker/u17:2+nfsiod10:20:000
2047421070,5sleep30-21swapper/309:22:403
31292991053,95cyclictest0-21swapper/009:58:230
312929910441,55cyclictest0-21swapper/011:28:280
312929910426,47cyclictest0-21swapper/010:47:500
312929910246,47cyclictest4415-21cpu08:53:240
312929910144,51cyclictest5386-21sh09:51:440
312929910127,44cyclictest0-21swapper/011:10:210
312929910025,45cyclictest0-21swapper/011:38:530
312929910024,48cyclictest0-21swapper/011:59:350
31292999948,44cyclictest26159-21ssh12:16:240
31292999948,44cyclictest26159-21ssh12:16:240
31292999929,41cyclictest0-21swapper/009:16:140
31292999846,46cyclictest31283-21cyclictest08:18:300
31292999843,50cyclictest0-21swapper/007:18:090
31292999832,57cyclictest0-21swapper/009:23:330
3129299974,72cyclictest28501-21kworker/u17:0+xprtiod10:38:220
3070129610,60sleep230786-21/usr/sbin/munin06:53:542
3070129610,60sleep230786-21/usr/sbin/munin06:53:542
31297999551,38cyclictest29877-21cstates10:33:251
31297999551,38cyclictest29877-21cstates10:33:251
3129299954,76cyclictest32000-21apt-get08:38:190
31305999465,14cyclictest0-21swapper/207:08:302
31297999473,13cyclictest31283-21cyclictest07:58:451
31292999439,48cyclictest0-21swapper/011:20:230
31292999439,48cyclictest0-21swapper/011:20:230
31292999427,59cyclictest0-21swapper/009:05:090
31292999343,43cyclictest5751-21diskmemload09:43:320
31292999343,43cyclictest5751-21diskmemload09:43:320
31292999343,43cyclictest22894-21sh12:10:240
31292999340,46cyclictest8743-21sh09:03:060
31292999340,46cyclictest8743-21sh09:03:060
31292999335,51cyclictest0-21swapper/010:13:070
31292999323,59cyclictest0-21swapper/007:13:120
31305999267,16cyclictest1-21systemd07:28:092
31297999270,14cyclictest31283-21cyclictest07:43:401
3129299924,81cyclictest0-21swapper/012:18:180
3129299923,84cyclictest0-21swapper/011:23:230
31292999236,46cyclictest0-21swapper/009:08:440
31292999236,46cyclictest0-21swapper/009:08:440
31305999150,33cyclictest0-21swapper/212:13:492
31305999150,33cyclictest0-21swapper/212:13:492
31292999120,45cyclictest0-21swapper/011:51:460
31292999120,45cyclictest0-21swapper/011:51:460
31305999067,16cyclictest5744-21latency_hist08:58:102
31292999063,17cyclictest0-21swapper/009:33:430
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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