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2025-06-17 - 02:21
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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 Jun 16, 2025 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
170132310273,24sleep30-21swapper/33
169422297260,24sleep20-21swapper/22
168892256205,38sleep00-21swapper/00
1734199241237,2cyclictest0-21swapper/22
169562241172,56sleep10-21swapper/11
1733699183178,3cyclictest0-21swapper/11
1733399143138,3cyclictest7101-21apt-get0
1734699123119,2cyclictest0-21swapper/33
235912840,2sleep10-21swapper/11
212082630,2sleep30-21swapper/33
48032610,4sleep01733399cyclictest0
35042490,4sleep2271rcuc/22
95192440,2sleep00-21swapper/00
1733699444,10cyclictest505-21dbus-daemon1
76542360,1sleep17652-21telnet1
1733699340,9cyclictest2931-21cat1
1733699340,9cyclictest2931-21cat1
1733699340,10cyclictest10530-21sed1
1733699331,7cyclictest0-21swapper/11
1733699330,9cyclictest26967-21cat1
191492320,2sleep10-21swapper/11
1733699311,9cyclictest18845-21cat1
1733699310,10cyclictest17607-21sed1
1733699303,9cyclictest5318-21ls1
1733699292,7cyclictest28290-21latency_hist1
1733699292,10cyclictest12937-21dump-pmu-power1
1733699280,10cyclictest19455-21stty1
1733699273,6cyclictest16056-21sed1
1733699272,7cyclictest1390-21latency_hist1
1733699270,10cyclictest6373-21awk1
13972270,2sleep20-21swapper/22
105152270,5sleep0101rcuc/00
1733699260,9cyclictest496-21date1
1733699253,6cyclictest17897-21expr1
1733699252,10cyclictest665-21runrttasks1
17336992519,4cyclictest23130-21sendmail1
1733699241,7cyclictest21-21ksoftirqd/11
17336992410,12cyclictest505-21dbus-daemon1
1733699240,9cyclictest31217-21expr1
1733699240,7cyclictest21-21ksoftirqd/11
17341992317,3cyclictest505-21dbus-daemon2
1733699232,7cyclictest1272-21processes1
1733699231,6cyclictest201rcuc/11
17333992313,6cyclictest5570-21apt-get0
1734699221,8cyclictest6093-21munin-run3
17346992216,4cyclictest19857-21df_inode3
1734199223,17cyclictest23657-21sendmail-mta2
1734199223,17cyclictest16747-21cat2
1734199221,4cyclictest26280-21apt2
1734199221,4cyclictest23629-21/usr/sbin/munin2
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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