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2025-12-06 - 13:12
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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 Sat Dec 06, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134852312274,25sleep10-21swapper/11
134812301262,26sleep20-21swapper/22
13988992880,284cyclictest11082-21date2
1399399283278,3cyclictest0-21swapper/33
120532255184,24sleep00-21swapper/00
135542252185,25sleep30-21swapper/33
1397899227221,3cyclictest11075-21gpgv0
1398599175171,2cyclictest0-21swapper/11
40621350,1sleep00-21swapper/00
690121220,3sleep31399399cyclictest3
185272700,4sleep20-21swapper/22
321752680,2sleep232182-21gltestperf2
215682410,1sleep30-21swapper/33
13978993514,4cyclictest9-21ksoftirqd/00
13978993412,4cyclictest9-21ksoftirqd/00
13978992910,4cyclictest9-21ksoftirqd/00
297192280,3sleep20-21swapper/22
1397899278,4cyclictest9-21ksoftirqd/00
1397899277,4cyclictest9-21ksoftirqd/00
13978992618,5cyclictest23927-21sh0
1397899261,10cyclictest9-21ksoftirqd/00
248882250,21sleep124915-21telnet1
13988992512,11cyclictest6605-21sed2
1397899257,4cyclictest9-21ksoftirqd/00
1397899257,4cyclictest9-21ksoftirqd/00
1397899256,4cyclictest9-21ksoftirqd/00
13978992512,4cyclictest9-21ksoftirqd/00
13978992511,5cyclictest9-21ksoftirqd/00
13978992511,3cyclictest111rcu_preempt0
1398899241,21cyclictest10333-21gdbus2
1397899248,4cyclictest9-21ksoftirqd/00
1397899241,5cyclictest9-21ksoftirqd/00
13978992414,6cyclictest505-21dbus-daemon0
13978992412,7cyclictest9430-21apt-get0
1398899234,17cyclictest28436-21cat2
1398899234,17cyclictest19748-21cat2
1398899233,17cyclictest2653-21latency_hist2
1398899231,19cyclictest18563-21sendmail2
13985992318,3cyclictest21-21ksoftirqd/11
1397899237,2cyclictest111rcu_preempt0
1397899236,4cyclictest9-21ksoftirqd/00
1397899234,6cyclictest9-21ksoftirqd/00
13978992314,5cyclictest10401-21idleruntime-cro0
98072220,2sleep20-21swapper/22
13993992216,3cyclictest19478-21kernelversion3
13993992215,4cyclictest31128-21cpuspeed_turbos3
1398899224,17cyclictest326-21awk2
1398899224,17cyclictest18932-21awk2
1398899224,17cyclictest18932-21awk2
1398899221,9cyclictest505-21dbus-daemon2
1398899221,4cyclictest29079-21apt-get2
1398899221,4cyclictest2082-21systemd-journal2
1398899221,3cyclictest505-21dbus-daemon2
1398899221,19cyclictest4352-21latency_hist2
1398899221,18cyclictest26699-21dump-pmu-power2
13985992215,4cyclictest21902-21sh1
13985992210,7cyclictest14807-21apt-get1
1397899229,4cyclictest9-21ksoftirqd/00
1397899228,3cyclictest9-21ksoftirqd/00
1397899226,4cyclictest9-21ksoftirqd/00
1397899224,4cyclictest9-21ksoftirqd/00
1397899224,3cyclictest9-21ksoftirqd/00
13978992217,3cyclictest9-21ksoftirqd/00
13978992217,3cyclictest9-21ksoftirqd/00
13978992213,3cyclictest9-21ksoftirqd/00
13993992116,3cyclictest10477-21sh3
13993992115,4cyclictest11082-21fw_packets3
13993992114,4cyclictest12499-21sendmail_mailst3
1398899214,15cyclictest23980-21cat2
1398899212,17cyclictest31417-21latency_hist2
1398899212,17cyclictest3096-21cat2
1398899212,17cyclictest15384-21cat2
13988992116,3cyclictest21272-21df_inode2
1398899211,4cyclictest25962-21turbostat.cron2
13988992114,4cyclictest2082-21systemd-journal2
1398899211,3cyclictest8054-1kworker/2:2H2
1398899211,3cyclictest23006-21dump-pmu-power2
1398899211,3cyclictest2082-21systemd-journal2
1398899211,3cyclictest2082-21systemd-journal2
1398899211,3cyclictest2082-21systemd-journal2
1398899211,18cyclictest2082-21systemd-journal2
1398899211,18cyclictest13226-21munin-run2
13988992111,6cyclictest12772-21apt-get2
1398899210,3cyclictest26661-21dump-pmu-power2
1398899210,3cyclictest12412-21munin-run2
13985992116,3cyclictest28282-21sh1
13985992114,4cyclictest11831-21expr1
1397899217,4cyclictest9-21ksoftirqd/00
1397899214,4cyclictest9-21ksoftirqd/00
1397899213,6cyclictest9-21ksoftirqd/00
1397899212,2cyclictest9-21ksoftirqd/00
1397899211,7cyclictest9-21ksoftirqd/00
13978992117,3cyclictest9-21ksoftirqd/00
13978992115,4cyclictest30768-21perf0
13978992115,3cyclictest6852-21wc0
1399399204,8cyclictest35-21ksoftirqd/33
13993992016,2cyclictest14158-21sed3
13993992015,3cyclictest9509-21aten2_r9power_p3
13993992015,3cyclictest7100-21aten2_r9power_v3
13993992015,3cyclictest27400-21fw_packets3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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