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2025-11-26 - 16:56
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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 100 highest latencies:
System rack9slot2.osadl.org (updated Wed Nov 26, 2025 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
66792305270,22sleep30-21swapper/33
702899281273,6cyclictest27946-21cups-browsed1
702899281273,6cyclictest27946-21cups-browsed1
66812274245,17sleep00-21swapper/00
703699261254,5cyclictest20916-21awk3
703699261254,5cyclictest20916-21awk3
66512258196,49sleep10-21swapper/11
68312248194,41sleep20-21swapper/22
703299174168,4cyclictest10333-21gdbus2
703299174168,4cyclictest10333-21gdbus2
1745721570,4sleep0702499cyclictest0
299442510,3sleep20-21swapper/22
54542500,1sleep10-21swapper/11
12852460,1sleep00-21swapper/00
11592440,4sleep20-21swapper/22
105542440,1sleep30-21swapper/33
312382400,2sleep10-21swapper/11
702899359,12cyclictest27871-21seq1
702899338,7cyclictest21-21ksoftirqd/11
7028993311,4cyclictest21-21ksoftirqd/11
7024993111,5cyclictest9-21ksoftirqd/00
7028993017,3cyclictest21-21ksoftirqd/11
702899300,2cyclictest111rcu_preempt1
7024992915,6cyclictest111rcu_preempt0
702899280,6cyclictest17680-21apt1
702499287,11cyclictest9-21ksoftirqd/00
280062280,3sleep3703699cyclictest3
703299270,25cyclictest31832-21kworker/2:12
702499274,2cyclictest111rcu_preempt0
702499273,7cyclictest9-21ksoftirqd/00
702899261,4cyclictest6030-21munin-run1
702899260,7cyclictest21-21ksoftirqd/11
702499269,2cyclictest111rcu_preempt0
702499261,2cyclictest9-21ksoftirqd/00
702899259,3cyclictest21-21ksoftirqd/11
702899255,10cyclictest31328-21seq1
7028992514,3cyclictest21-21ksoftirqd/11
702899250,7cyclictest21-21ksoftirqd/11
702499252,9cyclictest9-21ksoftirqd/00
702499252,9cyclictest9-21ksoftirqd/00
124502250,3sleep30-21swapper/33
702499246,2cyclictest111rcu_preempt0
702499243,10cyclictest9-21ksoftirqd/00
7024992413,3cyclictest9-21ksoftirqd/00
703299238,12cyclictest13970-21latency_hist2
703299231,4cyclictest5510-21cron2
702899239,3cyclictest21-21ksoftirqd/11
702899235,3cyclictest21-21ksoftirqd/11
702899234,3cyclictest12768-21seq1
702899232,7cyclictest111rcu_preempt1
7028992316,5cyclictest16381-21awk1
7028992316,4cyclictest23908-21seq1
7028992314,3cyclictest21-21ksoftirqd/11
702899231,3cyclictest21-21ksoftirqd/11
7028992313,3cyclictest21-21ksoftirqd/11
702499239,3cyclictest9-21ksoftirqd/00
7024992319,2cyclictest101rcuc/00
7024992318,3cyclictest101rcuc/00
7024992312,3cyclictest9-21ksoftirqd/00
702499230,5cyclictest7880-21cron0
7036992214,5cyclictest505-21dbus-daemon3
703299227,3cyclictest28047-21idleruntime-cro2
703299223,17cyclictest26961-21latency_hist2
703299223,17cyclictest22052-21cat2
703299222,17cyclictest3981-21latency_hist2
703299220,20cyclictest27348-21cron2
702899221,7cyclictest0-21swapper/11
7028992212,3cyclictest21-21ksoftirqd/11
702499222,7cyclictest9-21ksoftirqd/00
7024992214,5cyclictest58150irq/130-enp2s00
7024992214,4cyclictest28166-21latency_hist0
702499221,11cyclictest9-21ksoftirqd/00
702499220,8cyclictest20950-21cron0
703699214,15cyclictest9043-21cat3
7036992115,3cyclictest8577-21awk3
7036992114,4cyclictest20974-21apt-get3
703299212,17cyclictest32278-21cat2
703299212,17cyclictest21727-21apt2
7032992115,4cyclictest505-21dbus-daemon2
7032992115,4cyclictest17849-21swap2
7032992115,4cyclictest16382-21fw_packets2
703299211,3cyclictest0-21swapper/22
703299210,4cyclictest8789-1kworker/2:2H2
702899219,3cyclictest21-21ksoftirqd/11
702899219,3cyclictest21-21ksoftirqd/11
702899214,11cyclictest16380-21ls1
7028992116,3cyclictest10065-21seq1
7028992115,4cyclictest9006-21/usr/sbin/munin1
7028992115,4cyclictest617-21sh1
7028992115,4cyclictest3166-21seq1
7028992115,4cyclictest14329-21seq1
7028992112,2cyclictest21-21ksoftirqd/11
702499219,9cyclictest27946-21cups-browsed0
702499219,2cyclictest111rcu_preempt0
702499218,3cyclictest111rcu_preempt0
702499218,2cyclictest111rcu_preempt0
702499218,2cyclictest111rcu_preempt0
702499217,4cyclictest9-21ksoftirqd/00
702499217,3cyclictest9-21ksoftirqd/00
702499215,6cyclictest2082-21systemd-journal0
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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