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2025-11-03 - 04:58
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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 rack9slot2.osadl.org (updated Mon Nov 03, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
264122306267,26sleep10-21swapper/11
263722294258,23sleep20-21swapper/22
2670399287263,21cyclictest3188-21munin-run3
264962280243,24sleep00-21swapper/00
2669399279258,18cyclictest3209-21perf1
247542259223,24sleep30-21swapper/33
2669099235213,19cyclictest3217-21basename0
2669999233216,15cyclictest0-21swapper/22
2683821640,2sleep20-21swapper/22
50421570,1sleep30-21swapper/33
1808921480,1sleep00-21swapper/00
988021450,1sleep00-21swapper/00
104412510,8sleep228-21ksoftirqd/22
121632470,3sleep212168-21gltestperf2
104412440,2sleep10-21swapper/11
251262330,12sleep1201rcuc/11
2669999277,17cyclictest28-21ksoftirqd/22
48742240,1sleep00-21swapper/00
2669999233,18cyclictest20839-21latency_hist2
26699992318,3cyclictest25476-21cut2
26699992318,3cyclictest25476-21cut2
2669999231,19cyclictest17783-21sh2
26693992318,3cyclictest31271-21sendmail1
2669999223,17cyclictest851-21latency_hist2
2669999223,17cyclictest27587-21latency_hist2
26699992216,4cyclictest27415-21sed2
26699992216,4cyclictest23889-21cron2
2669999221,4cyclictest12378-1kworker/2:1H2
2669999221,3cyclictest19850-21/usr/sbin/munin2
2669999221,3cyclictest12378-1kworker/2:1H2
26690992217,3cyclictest27903-21aten2_r9power_e0
2669099221,11cyclictest17905-21cups-browsed0
26703992115,4cyclictest28545-21sed3
26703992115,4cyclictest14012-21sendmail_mailst3
26703992114,4cyclictest765-21grep3
26703992114,4cyclictest31536-21apt-get3
2669999212,17cyclictest8376-21sendmail-mta2
2669999212,17cyclictest7328-21latency_hist2
2669999212,17cyclictest30284-21cat2
26699992115,4cyclictest31559-21apt2
26699992115,3cyclictest15763-21apt-get2
2669999211,17cyclictest27287-1kworker/2:1H2
2669999211,17cyclictest2082-21systemd-journal2
2669999210,4cyclictest1-21systemd2
2669999210,20cyclictest0-21swapper/22
26693992115,4cyclictest5222-21sh1
2669099211,6cyclictest4293-21idleruntime-cro0
26690992116,3cyclictest20094-21/usr/sbin/munin0
26690992116,3cyclictest10385-21dump-pmu-power0
26690992115,4cyclictest12515-21ntpq0
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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