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2025-12-07 - 20:14
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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 Sun Dec 07, 2025 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
105172304265,26sleep00-21swapper/00
1085399282277,3cyclictest0-21swapper/11
103452279242,24sleep20-21swapper/22
103672247181,47sleep30-21swapper/33
106452241202,26sleep10-21swapper/11
1086099228224,3cyclictest0-21swapper/33
1084899206201,3cyclictest6497-21strings0
1085799204200,2cyclictest0-21swapper/22
1689821430,1sleep10-21swapper/11
857621400,4sleep01084899cyclictest0
180722500,1sleep00-21swapper/00
83462440,2sleep10-21swapper/11
40102420,1sleep00-21swapper/00
75802390,2sleep10-21swapper/11
1086099333,4cyclictest35-21ksoftirqd/33
1086099320,6cyclictest35-21ksoftirqd/33
10853993215,4cyclictest13106-21unixbench_multi1
1086099318,2cyclictest111rcu_preempt3
10853993116,2cyclictest27179-21timerwakeupswit1
10860992910,2cyclictest111rcu_preempt3
10860992910,2cyclictest111rcu_preempt3
1086099277,2cyclictest111rcu_preempt3
10860992722,2cyclictest341rcuc/33
1086099262,5cyclictest35-21ksoftirqd/33
1086099262,5cyclictest35-21ksoftirqd/33
1085799264,3cyclictest28-21ksoftirqd/22
1086099255,2cyclictest111rcu_preempt3
1085799255,3cyclictest28-21ksoftirqd/22
1085799251,2cyclictest20082-21munin-run2
1086099242,6cyclictest35-21ksoftirqd/33
10860992416,5cyclictest505-21dbus-daemon3
10860992412,3cyclictest35-21ksoftirqd/33
10860992412,3cyclictest35-21ksoftirqd/33
1085799247,2cyclictest111rcu_preempt2
10857992411,11cyclictest28-21ksoftirqd/22
10848992417,4cyclictest17456-21cron0
10848992417,4cyclictest17456-21cron0
1084899240,12cyclictest168352cat0
1084899240,12cyclictest168352cat0
1086099234,4cyclictest35-21ksoftirqd/33
10860992317,4cyclictest9061-21cut3
10860992311,3cyclictest35-21ksoftirqd/33
10860992311,3cyclictest35-21ksoftirqd/33
10860992310,3cyclictest35-21ksoftirqd/33
1085799234,17cyclictest17448-21cat2
1085799234,17cyclictest17448-21cat2
1085799234,16cyclictest0-21swapper/22
1085799231,3cyclictest29515-21munin-run2
10857992312,9cyclictest18993-21switchtime2
10857992310,10cyclictest14208-21expr2
10853992318,3cyclictest28203-21cron1
1086099227,2cyclictest111rcu_preempt3
1086099226,2cyclictest111rcu_preempt3
1086099221,9cyclictest0-21swapper/33
10860992216,4cyclictest312-21memory3
10860992215,4cyclictest35-21ksoftirqd/33
10860992214,4cyclictest35-21ksoftirqd/33
10860992211,3cyclictest35-21ksoftirqd/33
10860992211,3cyclictest35-21ksoftirqd/33
10860992210,3cyclictest35-21ksoftirqd/33
10860992210,3cyclictest35-21ksoftirqd/33
1085799229,2cyclictest27725-21idleruntime-cro2
1085799223,4cyclictest28-21ksoftirqd/22
1085799223,17cyclictest21511-21latency_hist2
1085799222,18cyclictest0-21swapper/22
10857992216,4cyclictest32614-21if_enp2s02
1085799221,3cyclictest32171-21munin-run2
1085799220,2cyclictest111rcu_preempt2
10848992218,2cyclictest9-21ksoftirqd/00
10848992217,3cyclictest31063-21if_enp2s00
10848992213,6cyclictest16031-21sendmail0
1086099219,2cyclictest35-21ksoftirqd/33
1086099219,2cyclictest35-21ksoftirqd/33
1086099217,2cyclictest111rcu_preempt3
1086099214,10cyclictest24015-21apt-get3
1086099213,9cyclictest0-21swapper/33
1086099212,9cyclictest0-21swapper/33
1086099212,2cyclictest35-21ksoftirqd/33
10860992115,4cyclictest6010-21sed3
10860992115,3cyclictest26378-21proc_pri3
10860992115,3cyclictest10376-21nfs4_client3
10860992114,4cyclictest17652-21cron3
1086099211,10cyclictest35-21ksoftirqd/33
1085799217,2cyclictest111rcu_preempt2
1085799217,2cyclictest111rcu_preempt2
1085799212,17cyclictest5184-21cat2
1085799212,17cyclictest27175-21cat2
1085799212,17cyclictest21729-21awk2
10857992116,3cyclictest746-21users2
10857992116,3cyclictest29763-21/usr/sbin/munin2
10857992115,4cyclictest25091-21wc2
1085799211,3cyclictest18081-21perf2
1085799211,3cyclictest10001-21munin-run2
10857992111,6cyclictest8137-21apt-get2
1085799210,4cyclictest9169-21taskset2
1085799210,18cyclictest12883-21munin-node2
10853992116,3cyclictest5429-21idleruntime-cro1
10853992116,3cyclictest5429-21idleruntime-cro1
10853992114,4cyclictest6282-21grep1
1084899211,6cyclictest7953-21apt0
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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