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2026-05-01 - 19:29
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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 rackcslot6.osadl.org (updated Fri May 01, 2026 12:46:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
205314499381380,1cyclictest2174301-21kworker/4:111:28:014
205314499381379,2cyclictest2114114-21kworker/4:109:12:014
2053144993810,380cyclictest0-21swapper/411:41:014
205314499380379,1cyclictest2183319-21kworker/4:010:51:014
205314499380379,1cyclictest2153113-21kworker/4:010:06:024
205314499380379,1cyclictest2114114-21kworker/4:109:31:024
205314499380379,1cyclictest2059658-21kworker/4:208:41:024
205314499380379,1cyclictest0-21swapper/410:28:024
205314499380378,1cyclictest2059658-21kworker/4:207:49:024
2053144993800,379cyclictest0-21swapper/409:07:014
2053144993800,1cyclictest0-21swapper/407:40:024
205314499379378,1cyclictest2174301-21kworker/4:111:36:014
205314499379378,1cyclictest2153113-21kworker/4:010:13:014
205314499379378,1cyclictest2114114-21kworker/4:108:51:024
205314499379378,1cyclictest2114114-21kworker/4:108:51:024
205314499379378,1cyclictest2059658-21kworker/4:208:34:024
205314499379378,1cyclictest2059658-21kworker/4:208:23:014
205314499379378,1cyclictest2059658-21kworker/4:208:11:024
205314499379378,1cyclictest0-21swapper/408:08:024
205314499379378,1cyclictest0-21swapper/407:27:024
205314499379378,1cyclictest0-21swapper/407:27:024
2053144993790,378cyclictest0-21swapper/408:01:024
205314499378377,1cyclictest2174301-21kworker/4:111:14:014
205314499378377,1cyclictest2059658-21kworker/4:208:39:024
205314499377376,1cyclictest2174301-21kworker/4:111:08:014
205314499377376,1cyclictest2114114-21kworker/4:109:39:024
205314499377376,1cyclictest2059658-21kworker/4:207:56:024
205314499377376,1cyclictest0-21swapper/409:21:024
205313899361360,1cyclictest2046975-21kworker/3:207:10:023
205313899361359,1cyclictest2102084-21kworker/3:108:45:023
205316799360358,1cyclictest0-21swapper/707:10:017
205313899360359,1cyclictest0-21swapper/307:55:023
205313899360358,1cyclictest2171290-21kworker/3:011:09:023
205313899360358,1cyclictest2102084-21kworker/3:108:53:023
205313899360358,1cyclictest2102084-21kworker/3:108:53:023
205316799359358,1cyclictest0-21swapper/708:45:027
205316799359357,1cyclictest2078018-21kworker/7:007:55:027
205313899359358,1cyclictest2171290-21kworker/3:012:25:013
205313899359358,1cyclictest2171290-21kworker/3:011:10:023
205313899359358,1cyclictest2150209-21kworker/3:210:20:023
205313899359358,1cyclictest2102084-21kworker/3:109:40:013
205313899359358,1cyclictest2102084-21kworker/3:108:35:023
205313899359358,1cyclictest2056070-21kworker/3:007:20:023
205313899359358,1cyclictest0-21swapper/312:20:013
205313899359357,1cyclictest2056070-21kworker/3:008:15:013
205316799358357,1cyclictest0-21swapper/710:20:017
205316799358357,1cyclictest0-21swapper/708:35:017
205316799358357,1cyclictest0-21swapper/707:20:017
205316799358356,1cyclictest2237461-21kworker/7:112:20:027
205316799358356,1cyclictest0-21swapper/711:10:017
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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