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2025-08-27 - 14:40
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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 Aug 27, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
108712279212,35sleep00-21swapper/00
107022262183,43sleep20-21swapper/22
107322254181,25sleep10-21swapper/11
1113099247239,5cyclictest13085-21munin-run1
108792247178,24sleep30-21swapper/33
1113499240236,2cyclictest0-21swapper/22
1112899164158,3cyclictest13087-21idleruntime-cro0
1375721620,2sleep30-21swapper/33
1113899112108,2cyclictest13070-21cron3
91912550,2sleep20-21swapper/22
251042530,2sleep00-21swapper/00
165292520,1sleep10-21swapper/11
106942490,1sleep00-21swapper/00
250362470,2sleep31113899cyclictest3
247652470,2sleep10-21swapper/11
192962370,1sleep00-21swapper/00
1113499360,35cyclictest3819-21kworker/2:22
291082340,2sleep20-21swapper/22
291082340,2sleep20-21swapper/22
11134992810,7cyclictest28-21ksoftirqd/22
1112899287,19cyclictest0-21swapper/00
1112899287,19cyclictest0-21swapper/00
1113099270,24cyclictest639-21kworker/1:31
201852260,1sleep30-21swapper/33
1113099265,8cyclictest21-21ksoftirqd/11
11130992617,3cyclictest21-21ksoftirqd/11
129192250,2sleep20-21swapper/22
1113499255,18cyclictest7694-21latency_hist2
11128992513,10cyclictest15367-21seq0
169062240,2sleep30-21swapper/33
1113899240,9cyclictest183372cstates3
1113899240,9cyclictest183372cstates3
1113499246,3cyclictest28-21ksoftirqd/22
1113499245,17cyclictest6376-21cat2
1113499243,14cyclictest111rcu_preempt2
1113099249,2cyclictest111rcu_preempt1
11130992420,3cyclictest21-21ksoftirqd/11
11130992420,3cyclictest21-21ksoftirqd/11
1113499234,17cyclictest17503-21latency_hist2
1113499234,17cyclictest1543-21cat2
1113099239,7cyclictest111rcu_preempt1
1113099236,6cyclictest21-21ksoftirqd/11
1113099236,6cyclictest21-21ksoftirqd/11
1113099232,18cyclictest22573-21grep1
11130992315,5cyclictest9051-21sendmail1
11130992313,3cyclictest21-21ksoftirqd/11
11130992313,3cyclictest21-21ksoftirqd/11
1112899233,18cyclictest1600-21cron0
11128992317,4cyclictest23209-21sh0
11138992218,2cyclictest32351-21latency_hist3
1113499229,2cyclictest111rcu_preempt2
1113499226,2cyclictest28-21ksoftirqd/22
11134992217,3cyclictest28-21ksoftirqd/22
11134992216,4cyclictest22931-21ntpq2
11134992215,4cyclictest26210-21find2
1113499221,4cyclictest505-21dbus-daemon2
1113499221,19cyclictest21811-21munin-run2
1113499221,18cyclictest9167-21apt-config2
1113499221,18cyclictest18911-21sed2
1113499221,18cyclictest15709-21munin-run2
1113099222,18cyclictest13933-21dump-pmu-power1
1113099222,17cyclictest24679-21sort1
11130992217,3cyclictest21-21ksoftirqd/11
11130992212,3cyclictest21-21ksoftirqd/11
309082210,1sleep20-21swapper/22
1113899215,13cyclictest11900-21cut3
11138992115,4cyclictest28735-21sed3
11138992115,4cyclictest1960-21apt-get3
1113499216,3cyclictest111rcu_preempt2
1113499214,16cyclictest2985-21awk2
1113499212,17cyclictest28-21ksoftirqd/22
11134992115,4cyclictest28608-21fw_packets2
1113499211,4cyclictest25282-21awk2
11134992114,4cyclictest24161-21seq2
1113499211,3cyclictest17589-1kworker/2:2H2
1113499211,1cyclictest111rcu_preempt2
11134992110,9cyclictest7854-21latency_hist2
1113499210,3cyclictest31464-21ntp_states2
1113499210,3cyclictest17589-1kworker/2:2H2
1113499210,12cyclictest32115-21grep2
1113099218,3cyclictest21-21ksoftirqd/11
1113099218,3cyclictest21-21ksoftirqd/11
1113099217,3cyclictest111rcu_preempt1
1113099217,3cyclictest111rcu_preempt1
1113099216,6cyclictest111rcu_preempt1
11130992115,4cyclictest9837-21sendmail1
11130992115,4cyclictest505-21dbus-daemon1
11130992115,4cyclictest31026-21seq1
11130992115,3cyclictest31829-21seq1
11130992114,4cyclictest2082-21systemd-journal1
11130992110,3cyclictest21-21ksoftirqd/11
1113099210,19cyclictest0-21swapper/11
11128992115,4cyclictest21790-21seq0
11138992015,3cyclictest27440-21unixbench_multi3
11138992015,3cyclictest2466-21kernelversion3
11138992014,4cyclictest5909-21grep3
11138992014,4cyclictest4163-21ls3
11138992014,4cyclictest17635-21cat3
11138992014,4cyclictest17635-21cat3
11138992014,4cyclictest16929-21idleruntime3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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