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2025-10-22 - 04:52
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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
Characteristics of the 50 highest latencies:
System rackcslot4.osadl.org (updated Wed Oct 22, 2025 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18318942267189,62sleep10-21swapper/119:07:231
18317872260185,59sleep00-21swapper/019:06:150
125899830,3rtkit-daemon1257-21rtkit-daemon22:07:131
20029172550,4sleep10-21swapper/123:55:191
125899540,4rtkit-daemon1257-21rtkit-daemon22:26:390
125899540,4rtkit-daemon1257-21rtkit-daemon22:00:410
125899520,4rtkit-daemon1257-21rtkit-daemon23:11:170
125899520,2rtkit-daemon1257-21rtkit-daemon21:47:170
183225799509,13cyclictest1966992-21ssh23:05:360
125899500,4rtkit-daemon1257-21rtkit-daemon21:38:560
125899500,4rtkit-daemon1257-21rtkit-daemon19:33:090
183225799489,21cyclictest1961488-21apt-get23:00:160
125899480,3rtkit-daemon1257-21rtkit-daemon21:25:350
125899470,8rtkit-daemon1257-21rtkit-daemon20:47:511
19549392450,4sleep00-21swapper/022:50:240
183225799457,11cyclictest2027175-21apt-get00:30:070
183225799454,11cyclictest2006584-21apt-get00:00:160
183225799451,9cyclictest1946377-21latency_hist22:40:010
183225799445,11cyclictest1973537-21apt-get23:15:150
1832257994410,12cyclictest2010300-21apt-get00:05:170
183225799425,12cyclictest1869837-21apt-key20:45:020
183225799415,10cyclictest1958918-21ssh22:55:240
183225799414,11cyclictest1929438-21awk22:15:260
125899410,8rtkit-daemon2021686-21rm00:20:370
183225799407,13cyclictest1911815-21sh21:52:190
183225799406,14cyclictest2016289-21ssh00:14:540
183225799405,19cyclictest1946666-21apt-get22:40:130
183225799404,21cyclictest1950736-21apt-get22:45:160
125899400,4rtkit-daemon1924696-21apt-get22:10:151
183225799397,10cyclictest1879663-21diskmemload21:11:370
183225799395,10cyclictest1980848-21apt-get23:25:120
183225799394,19cyclictest1939200-21apt-get22:30:140
183225799393,10cyclictest1895035-1kworker/0:1H22:25:020
125899390,5rtkit-daemon1257-21rtkit-daemon22:05:150
125899390,3rtkit-daemon0-21swapper/121:10:191
183225799387,10cyclictest1887581-21ssh21:20:110
183225799383,9cyclictest1-21systemd00:30:000
125899380,5rtkit-daemon1879663-21diskmemload21:29:201
183225799378,13cyclictest1875475-21seq20:57:220
183225799378,13cyclictest1875475-21seq20:57:220
183225799375,14cyclictest1847857-21ntp_states19:45:210
1832257993713,13cyclictest0-21swapper/021:33:510
125899370,7rtkit-daemon0-21swapper/120:17:011
125899370,3rtkit-daemon0-21swapper/023:43:580
19101102360,4chrt1910115-21tail21:50:241
183225799367,9cyclictest1862695-21sed20:25:010
183225799365,20cyclictest1845049-21perl19:40:190
183225799364,20cyclictest1866935-21cut20:35:010
183225799364,18cyclictest1879663-21diskmemload23:22:450
183225799363,11cyclictest1984432-21dpkg23:30:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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