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2026-08-29 - 19:25
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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 rackeslot6.osadl.org (updated Sat Aug 29, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
49108099162130,21cyclictest536627-21kworker/u8:1+events_unbound10:15:001
49108099145138,5cyclictest504227-21kworker/u8:1+events_unbound08:00:001
49107799139127,9cyclictest595187-21latency_hist12:30:000
49107799136126,7cyclictest566066-21kworker/u8:3+events_unbound11:10:010
49108099134119,6cyclictest577409-21kworker/u8:1+events_unbound12:10:241
49108099132117,14cyclictest490989-21kworker/u8:1+events_unbound07:15:001
49108099130116,11cyclictest1213033-21systemd-journal07:30:011
49108099127111,13cyclictest533843-21kworker/u8:3+flush-179:009:30:191
49107799125115,7cyclictest554366-21latency_hist10:25:010
49107799123111,9cyclictest555970-21apt-get10:30:010
49107799122113,6cyclictest487988-21kworker/u8:3+flush-179:007:35:240
49107799121109,9cyclictest534752-21apt-get09:25:000
49107799120112,5cyclictest557797-21latency_hist10:35:000
49108099119114,4cyclictest590439-21kworker/u8:0+events_unbound12:20:241
49108099118105,10cyclictest531293-21latency_hist09:15:011
49107799118108,6cyclictest509632-21kworker/u8:0+events_unbound08:20:000
49108099117111,4cyclictest574907-21kworker/u8:2+events_unbound11:25:241
49107799115107,6cyclictest570195-21kworker/u8:0+events_unbound11:15:010
49107799115104,7cyclictest496011-21latency_hist07:25:010
49107799114102,9cyclictest574907-21kworker/u8:2+events_unbound11:40:260
49108099113105,5cyclictest554602-21kworker/u8:0+flush-179:010:25:201
49108099112100,8cyclictest542935-21kworker/u8:0+flush-179:009:55:211
49108099111105,4cyclictest552733-21kworker/u8:2+events_unbound10:55:231
49107799111106,4cyclictest521736-21kworker/u8:0+flush-179:008:50:000
49108099110100,7cyclictest542935-21kworker/u8:0+events_unbound09:50:211
4910779911087,8cyclictest583779-21latency_hist11:55:000
49107799110100,8cyclictest538178-21latency_hist09:35:010
4910809910699,5cyclictest577409-21kworker/u8:1+events_unbound11:35:151
4910809910698,5cyclictest577409-21kworker/u8:1+flush-179:012:25:271
49108099106101,4cyclictest552733-21kworker/u8:2+events_unbound10:40:251
49108099106100,5cyclictest561236-21kworker/u8:0+events_unbound10:50:011
4910809910596,6cyclictest487988-21kworker/u8:3+events_unbound07:35:211
4910779910496,6cyclictest504227-21kworker/u8:1+flush-179:008:10:000
4910779910495,6cyclictest536627-21kworker/u8:1+flush-179:010:15:010
4910809910396,5cyclictest512180-21kworker/u8:2+events_unbound08:30:251
4910809910396,5cyclictest512180-21kworker/u8:2+events_unbound08:30:251
4910779910394,6cyclictest584771-21kworker/u8:2+flush-179:012:20:010
4910779910295,5cyclictest517448-21kworker/u8:1+events_unbound08:40:250
4910809910195,5cyclictest577409-21kworker/u8:1+flush-179:012:30:161
4910809910190,5cyclictest536627-21kworker/u8:1+events_unbound09:45:251
4910809910185,6cyclictest509632-21kworker/u8:0+events_unbound08:15:231
4910779910193,6cyclictest536627-21kworker/u8:1+events_unbound09:35:200
4910809910092,6cyclictest552733-21kworker/u8:2+flush-179:010:35:021
4910779910089,8cyclictest561236-21kworker/u8:0+flush-179:010:50:250
4910779910089,8cyclictest561236-21kworker/u8:0+flush-179:010:50:240
4910779910087,7cyclictest577409-21kworker/u8:1+events_unbound12:30:260
491080999993,4cyclictest504227-21kworker/u8:1+events_unbound07:50:231
491080999993,4cyclictest504227-21kworker/u8:1+events_unbound07:50:231
491077999994,4cyclictest487988-21kworker/u8:3+flush-179:007:25:240
491077999992,5cyclictest524958-21kworker/u8:3+flush-179:009:05:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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